JP3606771B2 - Image file creation method and apparatus, image reproduction method and apparatus, and recording medium - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method and apparatus for creating an image file in which an image data group representing a still image group composed of a plurality of still images photographed so that two-dimensional coordinate positions, viewpoint positions, and the like are different, and the image file. The present invention relates to a method and apparatus for progressive reproduction, and a computer-readable recording medium on which a program for causing a computer to execute these methods is recorded.
[0002]
[Prior art]
As a method for more realistically expressing a three-dimensional object or a scene image, a method of interactively reproducing a still image group composed of a plurality of images having a spatial relationship with each other is known. For example, for a still image group obtained by photographing an object from multiple directions at equal angular intervals, the object is reproduced by reproducing one still image and specifying the rotation direction of the object by operating the mouse or the like. It is possible to interactively reproduce an image viewed from the direction in which the viewpoint is changed. In addition, for a still image group obtained by gradually changing the focus from the near view side to the far view side and shooting, it is possible to interactively change the focus position and display each near object clearly. In this way, the display dimension can be changed variously, such as changing the viewpoint at the time of shooting up and down, left and right, front and back of the object, changing the focal position, or changing the shooting time of the moving object at regular intervals. By obtaining a still image group, the still image group can be reproduced interactively.
[0003]
On the other hand, there are various types of image data storage formats such as JPEG, GIF, and TIFF. Recently, image data is hierarchically decomposed for each resolution or density resolution, and data (hierarchical data) for each layer is divided. A format of encoding and compressing and storing has been proposed. Specifically, the image data is decomposed into hierarchical data for each resolution or density resolution by wavelet transform or the like, and the decomposed hierarchical data for each resolution or density resolution is encoded in hierarchical order. Are compressed and saved as a single file.
[0004]
This storage method has the following characteristics.
[0005]
(1) Since image data is not processed for each block as in the DCT (Discrete Cosine Transform) method used in conventional JPEG, artifacts such as block distortion do not occur.
[0006]
(2) Since the image data is hierarchically encoded, it is only necessary to transfer information of the resolution necessary for transferring the image data, and efficient image transfer is possible.
[0007]
(3) Since the image data is decomposed into multiple resolutions or multiple density resolutions, various image processing such as frequency enhancement processing can be performed relatively easily.
[0008]
(4) Space and frequency can be decomposed simultaneously by multi-resolution analysis, orthogonal transformation is performed in a wide range for a low frequency region that greatly affects coding efficiency, and a narrow range for a high frequency region. Therefore, even if quantization noise is generated in the peripheral portion of the edge in the image, the spatial spread can be suppressed. For this reason, noise is difficult to perceive.
[0009]
In addition, a file format capable of storing a plurality of different data in one file has been proposed, such as a FlashPix file proposed by Eastman Kodak Co., but such a file of the FlashPix standard is also proposed. It is also possible to store hierarchical data that has been decomposed into multiple resolutions or multiple concentration resolutions.
[0010]
On the other hand, when displaying image data in which images are hierarchized on a monitor or the like, such as the above-described storage or FlashPix standard file, data of low resolution or low density resolution (represented by resolution below) is converted to high resolution. Data is sequentially transferred to the monitor, and the monitor sequentially reproduces images from the transferred low resolution data. This is called progressive transfer (progressive playback when playing back). When the data to be transferred is displayed on the monitor, the entire low-resolution image is displayed first, and then the resolution of the transferred data increases. The image is reproduced so as to gradually become a clear image from the low-resolution blurred image.
[0011]
[Problems to be solved by the invention]
As described above, by reproducing the still image group interactively, it is possible to give the reproduced image a reality and a sense of realism. However, there is a problem that image data representing such a group of still images has a very large amount of information and poor transmission. For example, when a still image group is created by shooting an object from a viewpoint viewed from the entire circumference, the horizontal angular resolution is at least 60 divisions and the vertical angular resolution is at least 60. 15 divisions are required. As a result, 900 or more are required as the angle display dimension, and the data amount of the image data is 900 times or more that of one still image. Therefore, when all the image data representing a still image group is transferred and played back, it takes a long time before the image can be displayed interactively. Also, by transferring and playing back still images one frame at a time, the contents of the image can be confirmed to some extent, but until all the still images are transferred, the interactivity that the still image group has can be obtained. Can not.
[0012]
The present invention has been made in view of the above circumstances, and an image file creation method and apparatus for creating an image file capable of shortening the reproduction waiting time when interactively reproducing a still image group as described above, and this image An object of the present invention is to provide an image reproduction method and apparatus for progressively reproducing a file, and a computer-readable recording medium on which a program for causing a computer to execute these methods is recorded.
[0013]
[Means for Solving the Problems]
An image file creation method according to the present invention is an image file creation method for creating an image file in which an image data group representing a still image group composed of a plurality of still images having a predetermined spatial relationship is recorded.
The image data group is hierarchized to obtain hierarchical image data for each hierarchy so that the number of display dimension divisions in one hierarchy is larger than the previous hierarchy of the one hierarchy,
Each hierarchical image data is recorded in the image file.
[0014]
Here, “spatially in a predetermined relationship” means that the viewpoint position of the object included in each still image is different, the focal position is different, the shooting time interval is different, the resolution is different, etc. This means that the viewpoint position change, the focus position change, the movement position change, the resolution change, and the like of the included object are interactively reproducible.
[0015]
The “display dimension” is a dimension when interactively reproducing a still image group, and refers to, for example, a viewpoint position, a focal position, a shooting time interval, a resolution, and the like. In addition, it is possible to set not only one display dimension but also a plurality of display dimensions.
[0016]
Furthermore, “the number of display dimension divisions is large” means that at least one of the above-described viewpoint position, focus position, imaging time interval, resolution, and the like is larger than the display dimension division number of the previous level. In the present invention, “the display dimension is high” means that the display dimension division number is large.
[0017]
Of the layer image data, it is preferable that the layer image data having the lowest number of display dimensions is composed of an image representing the still image group or image data representing the image group.
[0018]
Moreover, it is preferable that the images corresponding to each layer are associated with each other to obtain the image data of each layer.
[0019]
Here, when one still image in a certain layer is considered, a plurality of still images corresponding to the one still image exist in the still image group of the next display dimension in the layer. Therefore, “associating images that correspond to each other for each layer” means that one still image in a certain layer and a plurality of images corresponding to the one still image included in the still image group of the next display division dimension. Is related to
[0020]
Furthermore, it is preferable that a plurality of display dimensions are set.
[0021]
Here, “setting a plurality of display dimensions” means, for example, that a still image group is configured so that a plurality of display dimensions are different among the above-described viewpoint position, focus position, shooting time interval, resolution, and the like. Say.
[0022]
An image reproduction method according to the present invention is a method of progressively reproducing an image file created by the image file creation method according to the present invention, wherein the hierarchical image data having the lowest display dimension division number among the respective hierarchical image data. The reproduction is performed in order.
[0023]
When the images corresponding to each other are associated with each other in each hierarchy, the hierarchy image data having the lowest display dimension division number is reproduced in order from the hierarchy image data, and the hierarchy image data having a predetermined display dimension is reproduced. For the hierarchical image data after the predetermined dimension, it is preferable that image data related to the image designated in the image of the predetermined dimension is reproduced with priority over other image data.
[0024]
In addition, when a plurality of display dimensions are set, it is preferable that each of the hierarchical image data is reproduced based on a preset display dimension.
[0025]
An image file creation device according to the present invention is an image file creation device for creating an image file in which an image data group representing a still image group composed of a plurality of still images having a predetermined spatial relationship is recorded.
Hierarchizing means for hierarchizing the image data group to obtain hierarchical image data for each hierarchy so that the number of display dimension divisions in one hierarchy is greater than the previous hierarchy of the one hierarchy;
And a recording means for recording each hierarchical image data in the image file.
[0026]
In the image file creation device according to the present invention, the hierarchizing means includes an image or an image group representing the still image group as the hierarchical image data having the lowest display dimension division number among the hierarchical image data. It is preferable that it is a means for obtaining the hierarchical image data so as to consist of representing image data.
[0027]
Further, it is preferable that the hierarchizing unit is a unit that obtains each hierarchical image data by associating images corresponding to each hierarchical layer.
[0028]
Furthermore, it is preferable that the hierarchizing means is means for obtaining the hierarchized image data by setting a plurality of display dimensions.
[0029]
An image reproduction apparatus according to the present invention is an image reproduction apparatus provided with reproduction means for progressively reproducing an image file created by the image file creation apparatus according to the present invention,
The reproduction means is means for reproducing the hierarchical image data in order from the hierarchical image data having the lowest display dimension division number.
[0030]
When the image file creation device creates hierarchical image data by associating images that correspond to each other for each layer, the reproduction means has the highest display dimension division number among the layer image data. In the stage of reproducing the hierarchical image data in order from the lowest hierarchical image data and reproducing the hierarchical image data of the predetermined display dimension, for the hierarchical image data after the predetermined dimension, the image data related to the image specified in the image of the predetermined dimension It is preferable that the image data is reproduced with priority.
[0031]
In the case where the image file creation device creates hierarchical image data by setting a plurality of display dimensions, the reproducing means reproduces each hierarchical image data based on a preset display dimension. It is preferable that
[0032]
In addition, you may record and provide on a computer-readable recording medium as a program which makes a computer perform the process performed in the said image file creation method and image reproduction method.
[0033]
【The invention's effect】
According to the present invention, an image data group representing a still image group is hierarchized so as to have different display dimension division numbers to create an image file. Here, the low display dimension means that the amount of hierarchical image data in the hierarchy is relatively small. Therefore, if the image file is progressively reproduced in order from the hierarchical image data with the lowest display dimension, the display dimension is lower at the initial stage, but the image file is displayed at an earlier stage than when all the image data groups are transferred. The content of the image to be displayed can be confirmed. In addition, although the number of display dimension divisions is small, the hierarchical image data includes a plurality of still images having different display dimensions even in the initial stage, so that the image can be reproduced with a certain degree of interactivity.
[0034]
In addition, by making the hierarchical image data with the lowest number of display dimensions divided from image data representing a still image group, the contents of the image file can be confirmed immediately when the hierarchical image data is reproduced. Therefore, it is possible to further shorten the time until the content of the entire picture of the reproduced image is confirmed.
[0035]
In addition, by associating image data corresponding to each other in each layer, by designating a specific image in a group of still images reproduced in a certain stage, the dimension after the predetermined dimension can be specified. Can reproduce an image related to the designated image with priority over other images. As a result, a desired image can be reproduced first, and the user's request can be met.
[0036]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0037]
FIG. 1 is a schematic diagram showing the configuration of an image file created by the image file creation method according to the first embodiment of the present invention.
[0038]
As shown in FIG. 1, the image file created according to the first embodiment is a car as shown in FIG. 2, and is obtained from 36 original still images obtained by shooting this object from 36 viewpoints. It is obtained by hierarchizing original image data representing a still image group. The first hierarchy is made up of hierarchical image data representing an index image of a car viewed from four viewpoints as shown in FIG. 3 while setting the resolution R of the original still image to R / 4. The second layer is composed of layer image data representing the image of the car viewed from 16 viewpoints while setting the resolution R of the original still image to R / 2. The third hierarchy is composed of hierarchical image data representing an image of a car viewed from 36 viewpoints with a resolution R of the original still image. The image file F created in this way is recorded on the image server and transferred to the user via the network, or is recorded on a portable recording medium and provided to the user.
[0039]
FIG. 4 is a schematic block diagram showing the configuration of an image reproduction apparatus for reproducing the image file F created in this way. As shown in FIG. 4, the image reproducing apparatus according to the present embodiment has a reading means 1 for reading an image file F transferred via a network or recorded on a recording medium, and progressive reproduction of the image file F as will be described later. A reproducing means 2 such as a monitor, and an input means 3 such as a keyboard and a mouse for performing various inputs to the reading means 1 and the reproducing means 2.
[0040]
Next, processing performed in the image reproduction device will be described. FIG. 5 is a flowchart showing processing performed in the image reproduction apparatus of this embodiment. First, the user inputs an instruction to read the image file F from the input means 3 (step S1). As a result, the reading unit 1 starts reading the image file F. First, the hierarchy image data of the first hierarchy is read, and the index image (see FIG. 3) represented by the hierarchy image data of the first hierarchy is reproduced on the reproduction means 2 (step S2). At this stage, although the resolution is 1/4 of the original still image, the user can confirm the content of the image file F by observing the image reproduced on the reproducing means 2. Next, the reading unit 1 reads the second layer image data and reproduces it on the reproducing unit 2 (step S3). At this stage, since an image having a resolution of 1/2 of the original still image can be reproduced from 16 viewpoints, the user changes the viewpoint sequentially by inputting that the viewpoint is changed from the input unit 3. An image can be displayed and the car can be rotated in the direction of the arrow in FIG. At this stage, since the number of viewpoints is only 16, the movement of viewpoint movement becomes unnatural. Therefore, it is preferable that the reproducing unit 2 performs viewpoint interpolation to generate an interpolated image and perform reproduction.
[0041]
Further, the reading unit 1 reads the third layer image data and reproduces it on the reproducing unit 2 (step S4). At this stage, since the image of resolution R of the original still image can be reproduced from 36 viewpoints, the user inputs the fact that the viewpoint is changed from the input means 3, thereby changing the number of viewpoints to 36 stages. Thus, the automobile can be rotated in the direction of the arrow in FIG.
[0042]
As described above, in the present embodiment, the image data group representing the still image group is hierarchized, and the image file F is progressively reproduced in order from the hierarchical image data having a lower display dimension. Therefore, the image data group is transferred at a time. The content of the image represented by the image file can be confirmed at an earlier stage than the case.
[0043]
Further, since still images with a certain number of viewpoints can be displayed even at a stage where the display dimension is low, the images can be reproduced with a certain degree of interactivity.
[0044]
In the first embodiment, when the index image of the first layer is displayed, any one of the four images included in the index image is selected by the input unit 3 to display the second image. For hierarchical image data after the hierarchy, image data related to the selected image may be preferentially read. For example, when an image of the front of the car in the index image is selected, the second and subsequent images related to this front image may be preferentially read. In this way, by preferentially reading an image related to the designated image, it is possible to reproduce the image of the viewpoint desired by the user first, and meet the user's request.
[0045]
Next, a second embodiment of the present invention will be described. FIG. 6 is a diagram for explaining processing in the second embodiment. In the second embodiment, the resolution and the number of viewpoints of an image to be read are changed according to a user request. In the second embodiment, the maximum number of viewpoints is V, the maximum resolution is R, and the original image data is in five levels of resolution of R, R / 2, R / 4, R / 8, and R / 16. It is assumed that the image file F is formed by hierarchizing into a total of 20 hierarchies each having four viewpoints of V, V / 2, V / 4, and V / 8. When the image file F configured as described above is read, three modes of a standard mode, a viewpoint number priority mode, and a resolution priority mode can be selected.
[0046]
When the viewpoint number priority mode is selected, hierarchical image data of the viewpoint number V / 8 at the R / 16 resolution is read, and the viewpoint numbers V / 4 and R / 8 resolution at the resolution of R / 16 are sequentially read in the following order. Hierarchical images in the order of the number of points V / 4, the number of viewpoints V / 2 at the resolution of R / 8, the number of viewpoints V / 2 at the resolution of R / 4, the number of viewpoints V at the resolution of R / 2, and the number of viewpoints V at the resolution of R Data is read. As a result, an image is progressively reproduced on the reproducing means 2 so that the number of viewpoints increases first.
[0047]
When the resolution priority mode is selected, hierarchical image data with the number of viewpoints V / 8 at the resolution of R / 16 is read, and the viewpoints with the resolution of the number of viewpoints V / 8 at the resolution of R / 8 and the resolution of R / 4 in the following order. The number of viewpoints V / 8, the number of viewpoints V / 4 at the resolution of R / 4, the number of viewpoints V / 4 at the resolution of R / 2, the number of viewpoints V / 2 at the resolution of R / 2, the number of viewpoints V / at the resolution of R / 2. 2. Hierarchical image data is read in the order of the number of viewpoints V at the resolution of 2 and R. As a result, the image is progressively reproduced on the reproducing means 2 so that the resolution increases first.
[0048]
When the standard mode is selected, hierarchical image data with the number of viewpoints V / 8 at the resolution of R / 16 is read, and the number of viewpoints V / 8 at the resolution of R / 8 and the resolution of R / 8 are sequentially below. Viewpoint number V / 4, Viewpoint number V / 4 at R / 4 resolution, Viewpoint number V / 2 at R / 4 resolution, Viewpoint number V / 2 at R / 2 resolution, View at resolution R / 2 The hierarchical image data is read in the order of the number of points V and the number of viewpoints V at the resolution of R.
[0049]
In the first and second embodiments, a still image group in which the viewpoint position and the resolution are changed is used. However, a plurality of still images taken by changing only the viewpoint position or only the resolution are used as the still image group. May be. A plurality of still images captured by changing the focal position may be used as a still image group. This creates a plurality of images taken by changing the focal position to N positions, and the first layer is hierarchical image data representing an index image of resolution R / 16 in which N / 4 images are laid out. The second layer is hierarchical image data representing an image with a resolution R / 4 and an N / 2 focal position, and the third layer is hierarchical image data representing an image with a resolution R and an N focal position. That's fine.
[0050]
Also, a plurality of still images obtained by capturing moving objects at predetermined time intervals may be used as a still image group. In this case, a continuous photograph taken for t seconds at a frame rate of P frames / s is created, and the first layer is an index image in which images of resolution R / 8 are laid out at t / 2 frames, for example. The second hierarchy is hierarchical image data representing an image with resolution R / 4 at tP / 10 frames, the third hierarchy is hierarchical image data representing an image with resolution R / 2 at tP / 3 frames, and the fourth hierarchy is tP frames. In this case, the image data may be hierarchical image data representing an image of resolution R. Here, the frame numbers t / 2, tP / 10, and tP / 3 may not be integers. In this case, the number of frames is an integer close to this. In this case, the hierarchical image data on and after the second hierarchy can be interactively reproduced, and can be automatically reproduced at a predetermined frame advance speed. In this case, it is also possible for the user to observe the index image of the first layer and designate a frame to be preferentially transferred in the second and subsequent layers. Thereby, an outline of a series of still images can be confirmed in the shortest time, and a desired scene can be designated and reproduced.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a file structure of an image file created by an image file creation method according to an embodiment of the present invention. FIG. 2 is a diagram showing a car as a subject. FIG. 4 is a schematic block diagram showing a configuration of an image reproduction device according to the present embodiment. FIG. 5 is a flowchart showing processing performed in the image reproduction device according to the present embodiment. FIG. 6 is a diagram for explaining processing in the second embodiment. Figure [Explanation of symbols]
1 Reading means 2 Reproducing means 3 Input means

Claims (18)

In an image file creation method for creating an image file recording an image data group representing a still image group composed of a plurality of still images having a predetermined spatial relationship,
The image data group is hierarchized so that the number of display dimension divisions in one hierarchy is larger than the previous level of the one hierarchy, and the hierarchy having the lowest display dimension division represents the still image group. Obtain hierarchical image data for each hierarchy , consisting of image data representing images or image groups ,
A method of creating an image file, comprising: recording each hierarchical image data in the image file. 2. The image file creation method according to claim 1, wherein the image data corresponding to each layer is associated with each other to obtain the respective layer image data . 3. The image file creation method according to claim 1, wherein a plurality of display dimensions are set . An image reproduction method for progressively reproducing an image file created by the image file creation method according to any one of claims 1 to 3,
An image reproducing method, wherein the image data is reproduced in order from the hierarchical image data having the lowest display dimension division number among the hierarchical image data . An image reproduction method for progressively reproducing an image file created by the image file creation method according to claim 3,
An image reproducing method, wherein each of the hierarchical image data is reproduced based on a preset display dimension . An image file in which an image data group representing a still image group composed of a plurality of still images having a predetermined spatial relationship is recorded, and the number of display dimension divisions in one layer is higher than that in the previous layer of the one layer The image data group is created in such a manner that the image data group is hierarchized so as to be enlarged, and the images corresponding to each layer are associated with each other to obtain the layer image data for each layer, and the layer image data is recorded. An image reproduction method for progressively reproducing an image file,
In the stage where the hierarchical image data having the predetermined display dimension is reproduced in order from the hierarchical image data having the lowest display dimension division number among the hierarchical image data, the hierarchical image data after the predetermined dimension is An image reproduction method, wherein image data related to an image designated in an image is reproduced with priority over other image data . In an image file creation device for creating an image file recording an image data group representing a still image group composed of a plurality of still images having a predetermined spatial relationship,
The image data group is hierarchized so that the number of display dimension divisions in one hierarchy is larger than the previous level of the one hierarchy, and the hierarchy with the lowest display dimension division represents the still image group. A hierarchizing means for obtaining hierarchical image data for each hierarchy, comprising image data representing an image or image group,
An image file creating apparatus comprising: recording means for recording each hierarchical image data in the image file . 8. The image file creation apparatus according to claim 7, wherein the hierarchizing unit is a unit that obtains each hierarchical image data by associating images corresponding to each hierarchical level . 9. The image file creation device according to claim 7, wherein the hierarchizing means is means for obtaining the hierarchized image data by setting a plurality of display dimensions . An image reproduction device comprising reproduction means for progressively reproducing an image file created by the image file creation device according to any one of claims 7 to 9,
The image reproduction apparatus according to claim 1, wherein the reproduction means is means for reproducing the hierarchical image data in order from the hierarchical image data having the lowest display dimension division number . An image reproduction device comprising reproduction means for progressively reproducing an image file created by the image file creation device according to claim 9,
The image reproduction apparatus , wherein the reproduction means is means for reproducing each of the hierarchical image data based on a preset display dimension . An image file in which an image data group representing a still image group composed of a plurality of still images having a predetermined spatial relationship is recorded, and the number of display dimension divisions in one layer is higher than that in the previous layer of the one layer The image data group is created in such a manner that the image data group is hierarchized so as to be enlarged, and the images corresponding to each layer are associated with each other to obtain the layer image data for each layer, and the layer image data is recorded. An image playback device comprising playback means for progressively playing an image file,
The reproduction means reproduces the hierarchical image data in order from the lowest display dimension division number among the hierarchical image data, and at the stage of reproducing the hierarchical image data of a predetermined display dimension, An image reproduction apparatus characterized by being means for reproducing image data related to an image designated in an image of a predetermined dimension with priority over other image data . A computer-readable recording recording a program for causing a computer to execute an image file creation method for creating an image file in which an image data group representing a still image group composed of a plurality of still images having a predetermined spatial relationship is recorded. In the medium,
The program stratifies the image data group so that the number of display dimension divisions in one hierarchy is larger than the previous level of the one hierarchy, and the hierarchy with the lowest display dimension division is the still image. A procedure for obtaining hierarchical image data for each hierarchy, comprising an image representing a group or image data representing an image group;
A computer-readable recording medium comprising: a step of recording each of the hierarchical image data in the image file . 14. The computer-readable recording medium according to claim 13, wherein the procedure of obtaining the hierarchical image data is a procedure of obtaining the hierarchical image data by associating images corresponding to each hierarchical layer . 15. The computer-readable recording medium according to claim 13, wherein the procedure for obtaining the hierarchical image data is a procedure for obtaining the hierarchical image data by setting a plurality of display dimensions . A computer-readable recording medium recording a program for causing a computer to execute an image reproduction method for progressively reproducing an image file created by the image file creation method according to any one of claims 1 to 3. ,
The computer-readable recording medium characterized in that the program has a procedure for reproducing the hierarchical image data in order from the hierarchical image data having the lowest display dimension division number . A computer-readable recording medium recording a program for causing a computer to execute an image reproduction method for progressively reproducing an image file created by the image file creation method according to claim 3,
The computer-readable recording medium characterized in that the program has a procedure of reproducing each hierarchical image data based on a preset display dimension . An image file in which an image data group representing a still image group composed of a plurality of still images having a predetermined spatial relationship is recorded, and the number of display dimension divisions in one layer is higher than that in the previous layer of the one layer The image data group is created in such a manner that the image data group is hierarchized so as to be enlarged, and the images corresponding to each layer are associated with each other to obtain the layer image data for each layer, and the layer image data is recorded. A computer-readable recording medium recording a program for causing a computer to execute an image reproduction method for progressively reproducing an image file,
The program is reproduced in order from the hierarchical image data having the lowest display dimension division number among the respective hierarchical image data, and at the stage of reproducing the hierarchical image data of a predetermined display dimension, What is claimed is: 1. A computer-readable recording medium comprising a procedure for reproducing image data related to an image designated in an image of a predetermined dimension in preference to other image data .

Images