JP4171807B2 - Black-and-white photo colorization device and black-and-white photo colorization program - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an apparatus for colorizing black-and-white photographs, a colorization program for black-and-white photographs, and a colorization method for black-and-white photographs, and in particular, an apparatus for colorizing black-and-white photographs suitable for colorizing black-and-white photographs taken on the ground surface. The present invention relates to a black-and-white photo colorization program and a black-and-white photo colorization method.

  A black-and-white image (for example, a black-and-white photograph) is expressed only by shading (brightness) information, but a color image (for example, a color photograph) is added with color information (saturation information and hue information) in addition to lightness information. Therefore, it has a very high expressive power compared to a black and white image.

Therefore, various proposals have been made as methods and apparatuses for colorizing black and white images (for example, Japanese Patent Laid-Open No. 10-324025).
Japanese Patent Laid-Open No. 10-324025

  The above-described conventional method and apparatus for colorizing a monochrome image performs, for example, a pseudo-colorization process in which density information is acquired from a monochrome document and the density information is converted into color information including the density information. there were.

  By the way, when colorizing from a black and white manuscript, if the black and white manuscript was a black and white photo taken from the surface of an aircraft, it was appropriate for vegetation (miscellaneous forests, conifers) and fields (fields, fields, etc.) covering the ground. It was difficult to make a color.

  Today, when color photography is common, black and white photography taken from the surface of an aircraft is often taken decades ago, so it alone has no general significance. Often treated as. However, the landscape at the time when the black-and-white photo was taken, for example, by colorizing the black-and-white photo into a color that appropriately corresponds to the vegetation that covers the ground (miscellaneous forest, conifers) and the fields (fields, fields, etc.) If the landscape can be restored, it will be possible to grasp in detail the changes in the landscape that appear in the landscape and landscape changes from the time when the black-and-white photo was taken to the day when the color photo can be taken. become. In this way, we can grasp the situation of natural disasters from the time when black and white photographs were taken to the present day, predict the possibility of new natural disasters from transitions such as land reclamation and mountain collapse, and countermeasures It is also possible to take.

  In addition, today, there is a remarkable change in the landscape due to the change of the environment, especially the land, and landscapes and landscapes that have become uniform throughout the country are becoming noticeable. If you can restore the scenery and landscape at the time when the black and white photo was taken, by colorizing it to a color that appropriately corresponds to the vegetation (miscellaneous forest, conifers) and fields (fields, fields, etc.) that cover the ground, By comparing the landscape and scenery at the time of colorization with today's scenery and landscapes where color photographs can be taken, the creation of local landscapes, scenery and environments in the future will be rich in locality at the time of black-and-white photography. It becomes possible to consider the environment, and it is also possible to use the colored landscapes and scenery at that time as valuable materials in education about the history of the hometown.

  Therefore, the present invention is colorized from a monochrome photograph obtained by photographing the ground surface, such as an aerial photograph, to a color appropriately corresponding to a vegetation (miscellaneous forest, conifer) or a field (field, field) covering the ground. An object of the present invention is to propose a black-and-white photo colorization device that makes it possible to perform a computer program for causing a computer to execute the device, and a black-and-white photo colorization method.

  The present invention acquires brightness / darkness information at each coordinate (for example, coordinates specified by the x-axis and y-axis) of the black-and-white photograph from the black-and-white photograph taken of the ground surface (step 301 in FIG. 3). (For example, vegetation or fields that cover the ground), and from among a plurality of land cover classification items that are predetermined according to the type of land use such as vegetation and fields that cover the ground, A land cover classification item to be assigned to each coordinate area of the black-and-white photograph is determined (step 302 in FIG. 3), and is assigned in advance to each land cover classification item among the plurality of predetermined land cover classification items. By separating the color sample (color) into color information (saturation information and hue information) and light / dark information, color information pre-assigned to the land cover classification item is acquired (FIG. 3). Step 303), or color information (saturation information and hue information) in a color sample assigned in advance to each land cover classification item among the plurality of predetermined land cover classification items is acquired. Brightness information acquired for each coordinate in the black-and-white photo of the ground surface, and color information (saturation information and hue) acquired for the land cover classification item assigned to the position specified by each coordinate in the black-and-white photo. Information) is synthesized (step 304 in FIG. 3) to create a color image, thereby solving the problem.

  According to the present invention, like aerial photographs, black and white photographs obtained by photographing the ground surface, and black and white images are colorized to colors that appropriately correspond to vegetation (miscellaneous forests, conifers) and fields (fields, fields, etc.) covering the ground. Color photographs and color images can be created.

  So, for example, from past aerial photographs where only black-and-white aerial photographs remain, color photographs, color images, and vegetation that covers the ground (miscellaneous forests) that are much more expressive than black-and-white photographs that only have shade information. , Conifers) and fields (fields, fields, etc.) can be created in color photos and color images that are appropriately colorized, so the situation of the vegetation on the surface at the time of black-and-white photography, the structure It is possible to grasp the situation in detail.

  By utilizing the present invention, for example, an aerial photograph (color photograph) taken of a specific area today is compared with a color image created from a black-and-white photograph taken of the specific area in the past. This makes it possible to grasp historical changes such as vegetation and topography more specifically.

  In other words, black and white photographs of the ground surface taken several years ago, for example, black and white photographs of the ground surface taken from an aircraft, colors that correspond appropriately to vegetation (miscellaneous forests, conifers) and fields (fields, fields, etc.) that cover the ground By changing to color, the landscape and landscape at the time when the black and white photo was taken was restored, and the landscape and landscape changed from the time when the black and white photo was taken to the day when the color photo can be taken. In order to grasp the changes in the land in detail, to understand the situation of natural disasters from the time when the black and white photos were taken to the present day, the reclamation of valleys, the destruction of mountains, and other new natural disasters in the future Can be predicted and measures can be taken.

  Today, landscapes and landscapes that are standardized throughout the country are becoming more visible, but colors that are appropriate for vegetation (miscellaneous forests, conifers) and fields (fields, fields, etc.) that cover the ground. By colorizing black-and-white photos, we restored the landscapes and scenery at the time when the black-and-white photos were taken, and compared the landscapes and scenery at the time when they were colorized with today's landscapes and scenery where color photos can be taken. This makes it possible to consider the environment rich in locality at the time of black-and-white photography when creating local landscapes, landscapes, and environments. It can also be used as a valuable resource in history education.

  In Japan, the Landscape Law was enacted in June 2004 and has been in effect since December of the same year. This law aims to form a good landscape in cities, farms and fishing villages, etc., and the technology of the present invention is expected to be greatly utilized to achieve this purpose.

  The black-and-white photo colorization device according to the present invention includes a light-dark information acquisition unit that acquires light-dark information at each coordinate of the black-and-white photo from the black-and-white photo obtained by photographing the ground surface, and each coordinate of the black-and-white photo acquired by the light-dark information acquisition unit. Brightness / darkness information registration means for registering the brightness / darkness information in association with the position specified by each coordinate of the black-and-white photo, and land cover classification item list display means for displaying a list of a plurality of predetermined land cover classification items; A land cover classification item determination request for determining what is photographed on the black and white photograph and urging processing to select a corresponding land cover classification item among the plurality of land cover classification items for each region in the black and white photograph Information about the land cover classification item selected for each area in the black-and-white photo, and the position specified by the coordinates of the black-and-white photo Land cover classification item registration means for registering in association, and obtaining color information in color samples registered in association with the land cover classification item selected for the position specified by each coordinate in the black and white photograph Color information acquisition means, and the brightness information acquired for each coordinate in the black-and-white photo and the color information acquired for the land cover classification item selected for the position specified by each coordinate in the black-and-white photo. And color image creating means for creating a color image.

  Here, the light / dark information acquisition means for acquiring the light / dark information at each coordinate of the black-and-white photograph from the black-and-white photograph obtained by photographing the ground surface is, for example, a conventionally known scanning optical mechanism, and a CCD image sensor for detecting light / dark information in the black-and-white photograph. It can comprise by the conventionally well-known scanner provided with.

  In addition, the light / dark information registration means, the land cover classification item list display means, the land cover classification item determination request means, the land cover classification item registration means, the color information acquisition means, and the color image creation means in the above shoot the computer, the ground surface Brightness / darkness information registered by associating brightness / darkness information at each coordinate of the black-and-white photo acquired by the brightness / darkness information acquisition means for acquiring brightness / darkness information at each coordinate of the black-and-white photo from the black-and-white photo associated with the position specified by each coordinate of the black-and-white photo Information registration means, land cover classification item list display means for displaying a list of a plurality of predetermined land cover classification items, judging what is photographed on the black and white photograph, and each region in the black and white photograph A land cover classification item determination requesting means for prompting a process of selecting a corresponding land cover classification item from among a plurality of land cover classification items, Land cover classification item registration means for registering information related to the land cover classification item selected for each area in the black photograph in association with the position specified by each coordinate of the black and white photograph, specified by each coordinate in the black and white photograph Color information acquisition means for acquiring color information in a color sample registered in association with the land cover classification item selected for the position to be selected, brightness information acquired for each coordinate in the black-and-white photo, A black-and-white photo colorization program for functioning as a color image creation means for creating a color image by combining color information acquired for the land cover classification item selected for the position specified by each coordinate in the black-and-white photo The processing operation based on the above is realized by being executed in a computer.

  In the above, color information acquisition means for acquiring color information in the color sample registered in association with the land cover classification item selected for the position specified by each coordinate in the black and white photograph, Color sample acquisition means for acquiring a color sample registered in association with the land cover classification item selected for the position specified by each coordinate in the black and white photograph, and color information about the acquired color sample And color information acquisition means for acquiring color information about the land cover classification item selected for the position specified by each coordinate in the black and white photograph.

  This is also the case in the color sample registered in association with the land cover classification item selected for the position specified by each coordinate in the black-and-white photo in the black-and-white photo colorization program described above. A part for functioning as color information acquisition means for acquiring color information is registered in association with the land cover classification item selected for the position specified by each coordinate in the black-and-white photo. Color sample obtaining means for obtaining a color sample, and the obtained color sample is separated into color information and light / dark information, and the land cover classification item selected for the position specified by each coordinate in the black and white photograph Change it to function as color information acquisition means to acquire color information, like this The processing operation based on the color of the program after changing can be realized by executing a computer.

  The black-and-white photo colorization method of the present invention performed using the above-described black-and-white photo colorization apparatus of the present invention acquires brightness / darkness information at each coordinate of the black-and-white photo from the black-and-white photo taken of the ground surface. For a position specified by each coordinate in the photograph, a land cover classification item assigned to the position is selected from a plurality of land cover classification items registered in the color sample database, and each coordinate in the black and white photograph is selected. The color information of the color sample registered in the color sample database in association with the land cover classification item assigned to the position specified in (1) is acquired, and acquired for each coordinate in the black-and-white photo of the ground surface. About the light and dark information and the land cover classification items assigned to the positions specified by the coordinates in the black-and-white photo. It synthesizes the acquired color information is for colorizing black and white photograph of the ground surface.

  Also in the colorization method for black and white photographs of the present invention, the color sample registered in the color sample database in association with the land cover classification item assigned to the position specified by each coordinate in the black and white photograph. The step of acquiring color information is performed by acquiring a color sample registered in the color sample database in association with a land cover classification item assigned to a position specified by each coordinate in the black and white photograph. The obtained color sample is separated into color information and brightness / darkness information, and can be replaced with a step of obtaining color information on the land cover classification item assigned to the position specified by each coordinate in the black and white photograph.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a diagram for explaining an outline of the apparatus configuration in an embodiment of a colorization apparatus for black and white photography according to the present invention.

  The scanner 3 serving as the light / dark information acquisition means includes, for example, a scanning optical mechanism 4 and a CCD image sensor 5 and is attached to the computer 1 in which the computer program of the present invention is installed.

  The computer 1 includes an interface unit 10 that enables mutual communication with other computers via a network, a processing operation unit 2 including a CPU, a ROM 11 and a RAM 12, an input unit 13 including a keyboard and a pointing device, A display unit 14 including a liquid crystal screen is provided. Further, the data necessary for executing the colorization processing of the black-and-white photograph according to the present invention is performed by, for example, the colorized image creation database 31 and the color sample database 32 provided in the database 30.

  The method of the present invention is executed, for example, as follows.

  First, from the black-and-white photograph 100 obtained by photographing the ground surface as shown in FIG. 2 by the scanner 3 or the like which is a light / dark information acquisition means, at each coordinate (for example, coordinates specified by the x-axis and y-axis) of the black-and-white photograph 100. A process of acquiring light / dark information is performed. For example, the black and white photograph 100 is read by the scanning optical mechanism 4 of the scanner 3 attached to the computer 1 and the CCD image sensor 5, and the light and dark information at each coordinate of the monochrome photograph is detected by the CCD image sensor 5.

  The brightness information at each coordinate of the black and white photograph 100 detected by the CCD image sensor 5 is processed by the processing operation unit 2 of the computer 1 in which the computer program of the present invention is installed (processing operation performed by the brightness information registration means 21). Thus, it is stored in the colorized image creation database 31 in association with the position specified by the coordinates of the black and white photograph 100. The steps so far correspond to step 401 in FIG.

  Next, the computer program of the present invention determines what is photographed on the black-and-white photograph 100 for the operator of the computer 1 via the processing operation unit 2 of the computer 1, and vegetation, fields, etc. that cover the ground The land cover classification item according to the type of land use is determined (corresponding to the processing operation performed by the land cover classification item determination requesting means 23).

  A color sample database 32 is stored in the database 30 provided in the computer 1. In this color sample database 32, land cover classification items (for example, miscellaneous forests, conifers, logging sites, bare land, rivers, gravel rivers, Kusagawabara, Providing the apparatus and computer program of the present invention, as well as the types of land use such as vegetation and fields that cover the ground, such as fields, fields, roads, railways, buildings, private houses, etc. A color photograph of a person who photographed the ground surface (photographed in the same season as when the black-and-white photo 100 was taken, and “color” of each item in the predetermined land cover classification item described above in that season. If the information can be obtained, it may be the same or different from the location / region where the black and white photo 100 is taken). Then, after classifying the land use type (that is, land cover classification item) such as vegetation and fields covering the ground imaged in the color photograph according to the predetermined land cover classification item (that is, land) Color (color sample) assigned to each land cover classification item of the predetermined land cover classification item (that is, a predetermined color (color sample)) Are associated and registered. That is, the predetermined color for each land cover classification item is acquired from the color photograph referred to as described above, and each land cover classification item is associated with the color (color sample) assigned to the land cover classification item. Are registered in the color sample database 32.

  FIG. 5 is an example of information registered in the color sample database 32. Here, the types of land use such as vegetation and fields covering the ground, which are taken when the ground surface is photographed, that is, land cover. As classification items, forests, conifers, logging sites, bare land, rivers, gravel rivers, Kusagawabara, rice fields, fields, roads, railways, buildings, private houses are pre-determined. (Color sample) is predetermined.

  The color (color sample) assigned to each land cover classification item is obtained by a person who provides the apparatus of the present invention and a computer program in advance by taking color photographs of various regions, and for each color photograph, Divide predetermined land cover classification items such as miscellaneous forests and private houses (ie, divide areas by land cover classification items), and assign any color (color sample) to each land cover classification item This is determined in advance.

  Therefore, the computer program of the present invention displays a list of land cover classification items registered in the color sample database 32 (for example, the above-mentioned miscellaneous forest to private house) via the processing operation unit 2 of the computer 1, and the liquid crystal of the computer 1. The color sample database 32 is displayed on the position specified by each coordinate in the black and white photograph 100 by being displayed on the display unit 14 such as a screen (this corresponds to a specific processing operation performed by the land cover classification item list display means 22). The user is prompted to select a land cover classification item assigned to the position from among a plurality of land cover classification items registered in. That is, the monochrome photograph 100 is prompted to divide the area according to the land cover classification item. This corresponds to a more specific processing operation performed by the land cover classification item determination request means 23.

  In response to this, the person who operates the computer 1 is, for example, for each specific area specified by each xy coordinate with respect to the position specified by each xy coordinate in the black-and-white photo 100. A land cover classification item assigned to the position is selected from a plurality of land cover classification items registered in the color sample database 32 and input to the computer 1. That is, the black-and-white photograph 100 is divided into areas according to land cover classification items (step 402 in FIG. 4), and this is input to the computer 1.

  Information relating to land cover classification items assigned to the positions specified by the coordinates in the black-and-white photograph 100, which are input to the computer 1 via the input unit 13 such as a keyboard and a pointing device (that is, about the black-and-white photograph 100) The information relating to the division of the area by the land cover classification item) is associated with the position specified by each coordinate (xy coordinate) of the black and white photograph 100 via the processing operation unit 2 of the computer 1 by the computer program of the present invention. By executing the processing to be stored in the color image creation database 31, the land cover classification item assigned to the position specified by each coordinate in the inputted black and white photograph 100 (that is, for the black and white photograph 100). Area division by land cover classification item) Are stored in association with the position specified by the coordinates of the black and white photograph 100 of the database 31 (x-y coordinates). This corresponds to the processing operation performed by the land cover classification item registration unit 24.

  Next, a color sample associated with the land cover classification item assigned to the position specified by each coordinate in the black-and-white photograph 100 via the processing operation unit 2 of the computer 1 by the computer program of the present invention. A process of acquiring a color (color sample) registered in the database 32 is performed. That is, as illustrated in FIG. 5, the color sample database 32 has a color (color sample) defined for each land cover classification item, so that the black-and-white photograph 100 is divided into regions by the land cover classification item. A process of acquiring the color (color sample) of each land cover classification item with reference to the color sample database 32 is performed (corresponding to the processing operation performed by the color sample acquiring unit 25a).

  Subsequently, the acquired color sample is separated into color information and light / dark information via the processing operation unit 2 of the computer 1 by the computer program of the present invention, and specified by each coordinate in the black and white photograph 100. A process of acquiring color information for the land cover classification item assigned to the position is performed (step 403 in FIG. 4 and corresponding to the processing operation performed by the color information acquisition unit 25b).

  Next, the computer program according to the present invention uses the processing operation unit 2 of the computer 1 to obtain the brightness / darkness information acquired for each coordinate in the black-and-white photograph 100 obtained by photographing the ground surface in the above-described step 401, and the black-and-white information in the above-described step 403. The color information acquired with respect to the land cover classification item assigned to the position specified by each coordinate in the photograph 100 is combined to create a color image (step 404 in FIG. This corresponds to the processing operation performed by the manufacturing means 26).

  The color image created in this way can be displayed on the display unit 14 such as a liquid crystal screen of the computer 1 or can be printed with a printing means (not shown).

  6 shows the R value, G value, B value, H value, S value, and I value of each color sample (color) illustrated in the color sample data 32 shown in FIG. 5 in the color sample data 32 shown in FIG. An example of the value is shown.

  In computers and televisions, for example, color display is performed using RGB data (R value, G value, B value) as shown in FIG. Then, for example, as shown in FIG. 7C, this RGB data is converted into a hue (H value), saturation (S value), and brightness (I value) that are close to human touch, As illustrated in (b), displaying a color from the H value, S value, and I value, converting the H value, S value, and I value into RGB data (R value, G value, B value), It is a conventionally known matter to display colors from RGB data (R value, G value, B value).

  In the present invention, as described above, the color sample (color sample) registered in the color sample database 32 by the process performed by the color information acquisition unit 25b in the process of step 403 in FIG. The color (color sample) acquired in association with the land cover classification item assigned to the position specified by each coordinate in the black-and-white photo 100 by the processing performed by the means 25a (that is, the black-and-white photo 100 is determined by the land cover classification item). The color of each land cover classification item (color sample)) when the area is divided is separated into color information (H value and S value) and light / dark information (I value), and is specified by each coordinate in the black and white photograph 100. Color information (H value and S value) about the land cover classification item assigned to the position is acquired (that is, black and white photograph 1) Color information of each land cover categories 0 when divided into areas by land cover categories (H value and S value) is obtained).

  On the other hand, as described above, in step 401 in FIG. 4, each coordinate (for example, the x-axis and the y-axis) of the black-and-white photo 100 acquired from the black-and-white photo 100 by the scanner 3 as the light / dark information acquisition unit is specified. Brightness / darkness information (I value) in the coordinates) is stored in the colorized image creation database 31.

  Therefore, color information (H value and S value) and light / dark information at each coordinate (for example, coordinates specified by the x axis and the y axis) of the black-and-white photograph 100 by the above-described processing operation performed by the color image producing means 26. (I value) is fused, and a color image obtained by colorizing the monochrome photograph 100 can be created.

  In the present invention, in a photograph of the ground surface such as aerial photography, miscellaneous forests, conifers, logging sites, bare land, rivers, gravel rivers, Kusagawabara, rice fields, fields, roads, railways, buildings, private houses, etc. The land use types such as vegetation and fields that cover the ground, that is, the land cover classification items that are photographed when the ground surface is photographed, are defined, and the color photograph (color image) that photographed the ground surface is referenced. Thus, a color given to each land cover classification item in the plurality of land cover classification items is determined in advance.

  Then, while acquiring the brightness / darkness information at each coordinate position of the monochrome photograph 100 from the monochrome photograph 100 to be colored, the monochrome photograph 100 is divided into regions according to the plurality of predetermined land cover classification items.

  Then, in order to colorize each of the divided areas, the color of each predetermined land cover classification item is divided into color information and light / dark information, and only the color information is obtained. The color image obtained by colorizing the black-and-white photograph 100 is created by fusing it with the light and dark information acquired for each coordinate position of the black-and-white photograph 100.

  Therefore, compared to conventional colorization methods such as reading color information from a black and white manuscript and creating a color image that includes the read light and shade information, the trees, conifers, and logging sites that are unique to the surface photograph Types of land use such as vegetation and fields that cover the ground, such as bare land, rivers, gravel river fields, grass river fields, fields, fields, roads, railways, buildings, private houses, etc. Colorization can be performed according to the color.

  As a result, like aerial photographs, black-and-white photographs of the ground surface, and black-and-white images, color photographs that have been colored into colors that are appropriate for vegetation (miscellaneous forests, conifers) and fields (fields, fields, etc.) that cover the ground. Color images can be created.

  In the above-described embodiment, the computer program of the present invention performs processing executed by the color sample acquisition unit 25a on the processing operation unit 2 of the computer 1, and the position specified by each coordinate in the black and white photograph 100. Acquire the color (color sample) associated with the assigned land cover classification item and registered in the color sample database 32 (the color of each land cover classification item when the black-and-white photo 100 is divided into regions by the land cover classification item) (Acquisition of color samples with reference to the color sample database 32) and the processing executed by the color information acquisition means 25b, the acquired color samples are separated into color information and light / dark information, and the black and white photograph 100 In the land cover classification item assigned to the position specified by each coordinate in There which was adapted to perform a process of acquiring color information.

  However, a plurality of predetermined land cover classification items and the colors of the respective land cover classification items in the plurality of land cover classification items are associated and registered in the color sample database 32 as shown in FIG. In addition, as shown in FIG. 6, if the hue (H value), saturation (S value), and brightness (I value) of each color are also registered in association with each other, the color described above is used. Instead of the processing operations executed by the sample acquisition means 25a and the color information acquisition means 25b, the processing executed by the processing operation unit 2 of the computer 1 by the computer program of the present invention is performed at a position specified by each coordinate in the monochrome photograph 100. Color information on the color sample registered in association with the land cover classification item assigned to the color sample database 32 is obtained. The processing operation performed by the color information acquisition unit 25 is to obtain (acquire color information of each land cover classification item when the black and white photograph 100 is divided into regions by the land cover classification item with reference to the color sample database 32). Can do.

  Even if it changes in this way, the effect | action and effect of this invention do not change.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to such embodiments, and various forms are possible within the technical scope grasped from the description of the claims. Can be changed.

The figure explaining the outline of a structure of the colorization apparatus of this invention A diagram showing an example of a black-and-white photo of the ground surface Flow chart explaining an example of the process of the present invention Other flowchart explaining an example of the process of the present invention The figure explaining an example of the data stored in a color sample database The figure explaining another example of the data stored in a color sample database (A), (b), and (c) are R values, G values, and B values, and hue (H value), saturation (S value), and brightness (I value) when displaying colors. Diagram explaining the relationship

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Computer 2 Processing operation part 3 Scanner 4 Scanning optical mechanism 5 CCD image sensor 10 Interface part 11 ROM
12 RAM
13 Input unit 14 Display unit 30 Database 31 Colored image creation database 32 Color sample database 21 Light / dark information registration means 22 Land cover classification item list display means 23 Land cover classification item determination request means 24 Land cover classification item registration means 25 Color information acquisition Means 25a Color sample acquisition means 25b Color information acquisition means 26 Color image preparation means 100 Black and white photography

Claims (4)

Light / dark information acquisition means for acquiring light / dark information at each coordinate of the black-and-white photo from the black-and-white photo taken of the ground surface;
Light / dark information registration means for registering the light / dark information at each coordinate of the black-and-white photo acquired by the light-dark information acquisition means in association with the position specified by each coordinate of the black-and-white photo;
A land cover classification item list display means for displaying a list of a plurality of predetermined land cover classification items;
Land cover classification item determination requesting means for determining what is photographed on the black and white photograph and urging processing to select a corresponding land cover classification item among the plurality of land cover classification items for each region in the black and white photograph When,
Land cover classification item registration means for registering information relating to the land cover classification item selected for each region in the black and white photograph in association with the position specified by each coordinate of the black and white photograph;
Color information acquisition means for acquiring color information in a color sample registered in association with the land cover classification item selected for the position specified by each coordinate in the black and white photo;
Color for creating a color image by combining the brightness information acquired for each coordinate in the black-and-white photo and the color information acquired for the land cover classification item selected for the position specified by each coordinate in the black-and-white photo A black-and-white photo colorization device comprising: Light / dark information acquisition means for acquiring light / dark information at each coordinate of the black-and-white photo from the black-and-white photo taken of the ground surface;
Light / dark information registration means for registering the light / dark information at each coordinate of the black-and-white photo acquired by the light-dark information acquisition means in association with the position specified by each coordinate of the black-and-white photo;
A land cover classification item list display means for displaying a list of a plurality of predetermined land cover classification items;
Land cover classification item determination requesting means for determining what is photographed on the black and white photograph and urging processing to select a corresponding land cover classification item among the plurality of land cover classification items for each region in the black and white photograph When,
Land cover classification item registration means for registering information relating to the land cover classification item selected for each region in the black and white photograph in association with the position specified by each coordinate of the black and white photograph;
Color sample acquisition means for acquiring a color sample registered in association with the land cover classification item selected for the position specified by each coordinate in the black and white photo;
Color information acquisition means for separating the acquired color sample into color information and light / dark information and acquiring color information about the land cover classification item selected for the position specified by each coordinate in the black and white photograph;
Color for creating a color image by combining the brightness information acquired for each coordinate in the black-and-white photo and the color information acquired for the land cover classification item selected for the position specified by each coordinate in the black-and-white photo A black-and-white photo colorization device comprising: Computer
The light / dark information at each coordinate of the black-and-white photo acquired by the light-and-dark information acquisition means for acquiring the light / dark information at each coordinate of the black-and-white photo from the black-and-white photo taken of the ground surface is associated with the position specified by each coordinate of the black-and-white photo. Light / dark information registration means to register,
Land cover classification item list display means for displaying a list of a plurality of predetermined land cover classification items,
Land cover classification item determination requesting means for determining what is photographed on the black and white photograph and urging processing to select a corresponding land cover classification item among the plurality of land cover classification items for each region in the black and white photograph ,
Land cover classification item registration means for registering information related to the land cover classification item selected for each region in the black and white photograph in association with the position specified by each coordinate of the black and white photograph;
Color information acquisition means for acquiring color information in a color sample registered in association with the land cover classification item selected for the position specified by each coordinate in the black-and-white photo;
Color for creating a color image by combining the brightness information acquired for each coordinate in the black-and-white photo and the color information acquired for the land cover classification item selected for the position specified by each coordinate in the black-and-white photo A colorization program for black-and-white photographs to function as image creation means. The computer obtains the light / dark information at each coordinate of the black-and-white photo obtained by the light-and-dark information acquisition means for acquiring the light-and-dark information at each coordinate of the black-and-white photo from the black-and-white photo taken from the ground surface at a position specified by each coordinate of the black-and-white photo Light / dark information registration means for registering in association,
Land cover classification item list display means for displaying a list of a plurality of predetermined land cover classification items,
Land cover classification item determination requesting means for determining what is photographed on the black and white photograph and urging processing to select a corresponding land cover classification item among the plurality of land cover classification items for each region in the black and white photograph ,
Land cover classification item registration means for registering information related to the land cover classification item selected for each region in the black and white photograph in association with the position specified by each coordinate of the black and white photograph;
Color sample acquisition means for acquiring a color sample registered in association with the land cover classification item selected for the position specified by each coordinate in the black and white photograph;
Color information acquisition means for separating the acquired color sample into color information and light / dark information and acquiring color information about the land cover classification item selected for the position specified by each coordinate in the black and white photograph,
Color for creating a color image by combining the brightness information acquired for each coordinate in the black-and-white photo and the color information acquired for the land cover classification item selected for the position specified by each coordinate in the black-and-white photo A colorization program for black-and-white photographs to function as image creation means.

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