JP3547792B2 - Image data recording device - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to an image data recording apparatus that creates hierarchical image data from image data of a predetermined image size and records the image data on an information recording medium, and in particular, processes image data of a size smaller than a specified image size. The present invention relates to an image data recording device.
[0002]
[Prior art]
As a typical example of the hierarchical encoding method, P.I. J Burt et al., "The Laplacian Pyramid as a Compact Image Code", IEEE Trans. Commun. , COM-31, No. 4, pp. 532-540 (April 1983), a Laplacian pyramid coding method is known. This is to generate and record a reduced or enlarged image in a hierarchical file structure as performed in a file of image data such as the Photo CD standard by Philips Kodak Company. This is disclosed in, for example, U.S. Pat. No. 4,969,204 (corresponding to Japanese Patent Publication No. 4-503295) and Japanese Patent Publication No. 4-504039.
[0003]
In this Photo CD standard, for example, three primary color image data of an original image composed of 3072 × 2048 pixels read at a high resolution from a photographic film after photographing is processed, and a 16Base image of 3072 × 2048 pixels on the 0th layer is processed. Create data. The 16Base image data is sequentially subjected to a reduction process, so that 4Base image data of 1024 × 1535 pixels in the first layer, 512 × 768 pixel Base image data in the second layer, and Base / 4 of 256 × 384 pixels in the third layer. In the image data and the fourth layer, reduced image data of four layers of Base / 16 image data of 128 × 192 pixels is created. The reduced image data and 16Base image data produced in this way are subjected to interpolation processing, arithmetic processing, encoding processing, and other processing, and are written on a compact disc (CD-R; compact disc-recordable) photo. Written to CD.
[0004]
The use of the reproduced image of the image data is generally determined for each layer of the image data created in each layer of each resolution. For example, 16Base image data is read from a photo CD, and after being subjected to predetermined signal processing, output to a printing device such as a printer to form a 16Base image of 3072 × 2048 pixels on a recording sheet. After reading out from the photo CD and performing predetermined signal processing, it is output to the television monitor device, and a Base image of 512 × 768 pixels is displayed on the screen.
[0005]
[Problems to be solved by the invention]
In the above-mentioned Photo CD standard, when the number of pixels of the input image data is less than the specified number of pixels of 3072 × 2048 pixels, the image data of 3072 × 2048 pixels produced by compensating for the insufficient pixel portion is encoded. It is possible to do. As a method of supplementing these pixels, there is a method of framing the periphery of an image.
[0006]
However, when an image with a frame is produced as described above, there is a problem of how to specify the color and pattern of the frame. For example, if an image with a frame is output to a television monitor device, the color of the frame may be blue or black. When printed out on recording paper, the color of the frame is considered to be white. When outputting to photosensitive paper, a frame with a pattern may be preferred. However, since this additional frame is created by adding frame data representing a desired frame to the input image data, it is not possible to add a frame of a color or a pattern so as to be suitable for reproduction according to each resolution. There was a problem. As a result, it has not been possible to change the type of frame added to the image output to the television monitor device or the image printed out on the recording paper, and record it on an information recording medium such as a photo CD.
[0007]
The present invention is directed to an image data recording apparatus capable of compensating for insufficient image data so as to be an appropriate image when reproducing an image of each layer even when the image size of an input image is less than a prescribed size. The purpose is to provide.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention processes an original image having a predetermined image size to create hierarchical image data having a plurality of image sizes, and records the created image data on an information recording medium. An image data recording apparatus for processing a first image data representing an original image to generate second image data of hierarchical image data composed of a plurality of layers; Switching means for selecting the image data, and control means for controlling the connection operation of the switching means. The control means determines the image size of the first image data based on the first image data. And a switching control unit that controls the selection of the second image data by the switching unit according to the image size determined by the data determining unit. Data generating means for generating, when the image size of the first image data determined by the data determining means is smaller than the predetermined image size, at least third image data representing an image for satisfying the predetermined image size Wherein the switching unit selects and switches between the second image data having a plurality of layers and the third image data based on the control of the switching control unit.
[0009]
In this case, when the image size of the first image data is smaller than the predetermined image size, the data generation unit may generate third image data for a frame image that satisfies at least the predetermined image size.
[0010]
Further, when the image size of the first image data is smaller than the predetermined image size, the data generation means may generate third image data representing a frame image of an arbitrary color that satisfies at least the predetermined image size.
[0011]
Further, the data generation means may generate third image data representing a frame image having a predetermined picture.
[0012]
The hierarchical processing means includes a plurality of reduction processing means for sequentially reducing the first image data representing the original image in accordance with the resolution hierarchy, and processes the reduced image data reduced by the reduction processing means. Calculating means for generating the second image data by using a frame image which satisfies at least the predetermined image size when the image size determined by the data determining means is smaller than the predetermined image size. It is preferable to generate third image data for use.
[0013]
The apparatus may further include an encoding unit that encodes the data selected by the switching unit.
[0014]
The information recording medium on which image data of a predetermined image size is recorded is preferably an optical disk.
[0015]
[Action]
According to the image data recording device of the present invention, the first image data representing the original image is processed by the layering processing means, and the second image data of hierarchical image data composed of a plurality of layers is created. On the other hand, in accordance with the image size of the first image data determined by the data determination means, at least a third image for satisfying at least the predetermined image size for the first image data smaller than the predetermined image size. Image data is generated by the data generation unit of the hierarchical processing unit.
[0016]
The produced and generated second image data and third image data are selected and switched by the operation of the switching unit based on the control of the switching control unit. Thus, when the first image data smaller than the predetermined image size is input, the insufficient image data can be supplemented by the third image data generated by the data generating means, and The image data with the supplemented pixels can be recorded on the information recording medium.
[0017]
【Example】
Next, an embodiment of an image data recording apparatus according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 shows an embodiment of an image data recording apparatus to which the present invention is applied. Referring to FIG. 1, the image data recording apparatus 10 converts input image data into a hierarchical image data structure including a plurality of layers (0th to 4th layers) for each resolution, and When the image size is smaller than the predetermined image size, frame data representing a frame image is added to the image data of each resolution and compression-encoded, and the encoded image data is, for example, written on a compact disc (CD). -R) is an image data recording device for recording information on an information recording medium. In FIG. 1, the image data recording apparatus 10 is merely an example for explaining the present invention, and for convenience of explanation, FIG. 2 shows only necessary parts, and other parts not directly related to the present invention. Are not shown.
[0018]
The image data recording apparatus 10 includes a hierarchical processing circuit 12 for converting input image data into hierarchical image data and adding frame data, and an encoding circuit for encoding data processed by the hierarchical processing circuit 12. And a control circuit 16 for performing control according to the image data input to the image data recording device 10. More specifically, the hierarchization processing circuit 12 ₀ Are sequentially reduced to obtain hierarchical image data (Gaussian plane) G ₀ ~ G _M-1 Image reduction processing unit 1 for producing _m (1 ₁ ~ 1 _M-1 ) And the image reduction processing unit 1 _m Hierarchical image data G created in ₁ ~ G _M-1 Processing unit 2 for expanding the image _m (2 ₁ ~ 2 _M-1 ) And the image reduction processing unit 1 _m And interpolation processing unit 2 _m Data (Laplacian plane) L between the two image data created respectively in ₀ ~ L _M-2 Calculator 3 for calculating _m (3 ₀ ~ 3 _M-2 ), And a frame data generating unit 4 for generating frame data for each layer _m (4 ₀ ~ 4 _M-1 ), And a switch 5 for selectively selecting image area data and frame area data for each layer. _m (5 ₀ ~ 5 _M-1 ). In this specification, the uppercase symbol “M” represents the number of layers in the hierarchical image data structure.
[0019]
Image reduction processing unit 1 _m Is the input image data G ₀ Has a low-pass filtering function for band-limiting the image, _m Is a processing unit that converts image data in units of blocks of n × n pixels (n is a natural number) by subsampling into image data of one pixel. This image reduction processing unit 1 _m Reduces the input image data input to the input 100 to an image size of 1 / n both vertically and horizontally. Image reduction processing unit 1 of each layer _m (1 ₁ ~ 1 _M-1 ) Indicates a plurality of hierarchical image data G sequentially. _m (G ₁ ~ G _M-1 ) Is prepared. Image reduction processing unit 1 of each layer _m Hierarchical image data G produced in _m (G ₁ ~ G _M-1 ) Indicates the image data G ₀ Together form a conceptual Gaussian pyramid.
[0020]
Interpolation processing unit 2 _m Is the image reduction processing unit 1 _m Image data G reduced by _m Is a processing unit that performs the interpolation processing of. For example, interpolation processing unit 2 _m Is the image data G of a certain hierarchy _m , N × n “0” data are added to each pixel, and interpolation is performed to enlarge the image to n × n times. Each of the interpolated image data is an image G of the next lower hierarchy. _m-1 , And these image data are stored in the arithmetic unit 3 in the next lower hierarchy. _m-1 Is input to This interpolation processing is performed to obtain difference data from the image data of the next lower hierarchy, and the image reduction processing unit 1 _m Each of the image data subjected to the reduction processing is converted into the same image size as the image of the lower hierarchy. The numerical value to be added by interpolation is preferably a numerical value that reduces the amount of recording data and allows easy decoding. In this embodiment, "0" is used.
[0021]
Arithmetic unit 3 _m Is a processing unit that calculates a difference between data values of two pixels. The arithmetic unit 3 of the m-th hierarchy in the embodiment _m Explaining based on _m Is the image data G _m And an interpolation processing unit 2 one layer above the m-th layer _{m + 1} Image data G interpolated by _{m + 1} And the difference between the two pixel data values on the same address. This arithmetic unit 3 _m Data L forming the Laplacian pyramid obtained by _m (Laplacian plane L _m ) Is preferably stored in a storage circuit (not shown) for storing data of the Laplacian plane, _m (5 ₀ ~ 5 _M-2 ) Is input to one of the input terminals 18. In addition, reduction processing section 1 _M-1 Image data L reduced by _M-1 Is the switch 5 _M-1 Is input to one of the input terminals 19.
[0022]
Frame data generator 4 _m (4 ₀ ~ 4 _M-1 ) Is a data generation processing unit that generates data of a frame area for each hierarchy. For details, frame data generation unit 4 _m Generates frame data corresponding to the difference between the data representing the frame of each hierarchy and the data representing the frame of the hierarchy one level higher than that hierarchy. For example, frame data generation unit 4 ₀ Generates frame data corresponding to the difference data between the data representing the frame image of the 0th layer and the data representing the frame image of the first layer one level higher than that layer. Also, the frame data generation unit 4 _M-1 Generates frame data representing a frame in the highest hierarchy. Frame data generator 4 _m May be substantially the same as the image data forming the Gaussian pyramid.
[0023]
Frame data generator 4 _m (4 ₀ ~ 4 _M-1 The frame data generated in ()) is generated by, for example, the configuration shown in FIG. In the figure, the hierarchical image storage unit Gb of the Gaussian pyramid ₀ ~ Gb _M-1 Then, frame image data representing a frame image of a desired color to be directly added to the image data of each layer is set for each of a plurality of resolutions. In each of the hierarchies except the (M-1) -th stage, the interpolation processing unit 2 _m The difference data between the frame image data of the higher layer and the frame image data of each layer interpolated by _m Are calculated respectively, and the calculated data becomes frame data. Since this frame data is obtained by the same procedure as that of the image data, when this frame data is inserted into the margin of the image data, the original image is restored by the same procedure as the image data.
[0024]
The configuration shown in FIG. 2 for generating such frame data is shown in FIG. _m In this embodiment, the frame data thus generated is written into a storage element such as a ROM (Read Only Memory). Frame data generator 4 _m Is provided with a ROM (not shown) in which the frame data is written.
[0025]
Specifically, in this embodiment, the frame data generation unit 4 in the 0th and 1st layers ₀ And 4 ₁ Is frame data representing a white frame image, and generates frame data corresponding to the difference from the image data representing the frame of the next higher hierarchy. Further, the frame data generation unit 4 in the second hierarchy ₂ Is frame data representing a blue frame image, and generates frame data corresponding to the difference from the image data representing the frame of the next higher hierarchy. Therefore, the frame data generation unit 4 of the first hierarchy ₁ Generates frame data corresponding to the difference between the data representing the blue frame image in the second hierarchy one level higher and the data representing the blue frame image in the first hierarchy.
[0026]
Frame data generator 4 _m Generates frame data based on the reference signal appearing at the input 22, and outputs the generated frame data to the output 19. Therefore, the frame data generation unit 4 _m The output timing of the output frame data is defined based on the reference signal appearing at the input 22. Frame data generator 4 _m Output 19 of the switch 5 _m Are connected to the other input terminals 19 of the respective terminals.
[0027]
Here, the reduction processing unit 1 _m , Interpolation processing unit 2 _m , Arithmetic unit 3 _m And frame data generation unit 4 _m FIG. 3 shows an outline of an image represented by the data of the first hierarchy and the data of the second hierarchy processed respectively. FIG. ₁ ~ 1 ₃ The reduced image data G respectively subjected to the reduction processing ₁ ~ G _M-1 And the interpolation processing unit 2 ₂ And 2 ₃ , And image data 300 and 302 interpolated by ₁ And 3 ₂ Differential data L calculated by ₁ And L ₂ And frame data generation unit 4 ₁ And 4 ₂ The frame data 304 and 306 generated by are shown. In this figure, a portion indicated by a dashed line is a frame representing an image size of a prescribed number of pixels in the hierarchy.
[0028]
The specified image size is, for example, reduced image data G ₁ 1024 × 1536 pixels representing a 4Base image, and the reduced image data G ₂ In the second hierarchy, 512 × 768 pixels representing a Base image. The frame data 304 is frame data corresponding to the difference from the image data representing the frame of the next higher hierarchy, and the frame data 304 represents a blue frame image in the second hierarchy of the next higher hierarchy. This is frame data corresponding to the difference between the data and the data representing the blue frame image of the first hierarchy. In this embodiment, the switching unit 5 switches between the difference data and the frame data, thereby performing processing for supplementing the frame image to a portion that does not satisfy the specified image size.
[0029]
Returning to FIG. _m (5 ₀ ~ 5 _M-1 ) Is a switch for selectively selecting data of an image area and data of a frame area for each layer. Specifically, switch 5 _m (5 ₀ ~ 5 _M-1 ) Corresponds to the switching control signal appearing at the control input 24, the input terminal 18 at which the image data created at each level appears, and the frame data generating unit 4 at each level. _m And the input terminal 19 in which the frame data generated in step (1) appears. This switching operation is performed based on the control of the control circuit 16. Therefore, when the image size of the input image data is a specified 1672 image of 3072 × 2048 pixels, and the image size is satisfied, the frame data is not taken in and the switching device 5 that selects the input terminal 18 is selected. _m Is maintained as shown. Switch 5 _m (5 ₀ ~ 5 _M-1 ) Constitute an output of the hierarchical processing circuit 12, and the output 30 is connected to the encoding circuit 14.
[0030]
The encoding circuit 14 is an encoding processing circuit that encodes each of the hierarchical image data created by the hierarchical processing circuit 12. Specifically, the encoding circuit 14 includes the switch 5 _m (5 ₀ ~ 5 _M-1 Encoder 6 for encoding the data output from _m (6 ₀ ~ 6 _M-1 ). Encoder 6 _m (6 ₀ ~ 6 _M-1 In this embodiment, the data encoded in ()) is recorded on a recording medium such as an optical disk.
[0031]
The control circuit 16 is a control circuit that controls the hierarchical processing circuit 12 according to the input image data. Specifically, the control circuit 16 controls the input image data G ₀ A data discriminating unit 7 for discriminating the image size of the image data, and a switch 5 _m And a switching control unit 8 for controlling the Specifically, the data discriminating unit 7 determines whether the input image data G ₀ Has the function of determining the image size representing the number of pixels of the image data G ₀ Is a specified image size. In this embodiment, the data discriminating unit 7 determines that the input image data G ₀ Of the image data G based on the ₀ When it is recognized that image data having an image size composed of fewer pixels than the 16Base image of 3072 × 2048 pixels appears in the input 100, a determination result signal corresponding to the recognition result is obtained. Output to output 20. The output 20 of the data discriminating unit 7 is connected to the switching control unit 8. Further, the data discriminating unit 7 includes the frame data generating unit 4 _m Has a function of generating a reference signal that defines the generation timing of the frame data generated by. The data discriminating unit 7 converts the generated reference signal 22 into the frame data generating unit 4 _m (4 ₀ ~ 4 _M-1 ).
[0032]
The switching controller 8 controls the switching unit 5 based on the determination result signal appearing at the input 20. _m (5 ₀ ~ 5 _M-1 ) Is a switching control unit that generates a switching signal for controlling the switching of the above. More specifically, the switching control unit 8 controls the image reduction processing unit 1 of each layer. _m , Interpolation processing unit 2 _m And arithmetic unit 3 _m L that constitutes the Laplacian pyramid created by ₀ ~ L _M-1 (Laplacian plane) and frame data generation unit 4 _m (4 ₀ ~ 4 _M-1 ) Generates a switching signal for selecting one of the frame data respectively generated in accordance with the added position of the frame image. At this time, the switching controller 8 switches the switch 5 based on the determination result signal corresponding to the address of the input image data. _m (5 ₀ ~ 5 _M-1 ) Is output to the output 24. Further, the switching control unit 8 controls the image data G ₀ When the determination result signal is not notified from the data determination unit 7 at the time of input of the _m Is controlled to be maintained. The output 24 of the switching control unit 8 is _m (5 ₀ ~ 5 _M-1 ).
[0033]
The image data recording device 10 of the embodiment is configured by the above-described respective functional units. Original image data G input to the image data recording device 10 ₀ The operation of the image data recording apparatus 10 when the image size of the image data is smaller than the specified image size of 2048 × 3072 pixels will be described below. First, difference data L forming the Laplacian pyramid _m (L ₀ ~ L _M-1 ) Is described below. ₀ Is input, and the input image data G ₀ Is the reduction processing unit 1 _m (1 ₀ ~ 1 _M-1 ), The number of pixels is sequentially reduced to 1 / n, and the reduced image data G ₁ ~ G _M-1 Is produced. As a result, the reduced image data G ₁ ~ G _M-1 And original image data G ₀ An M-th stage Gaussian pyramid of the 0th to 4th layers composed of the respective Gaussian planes is manufactured.
[0034]
Next, the reduced image data G at the highest level of the Gaussian pyramid _M-1 (L _M-1 ) Is the Laplacian plane L of the fourth hierarchy. _M-1 And the reduced image data G _M-1 Is the switch 5 _M-1 Is input to the input terminal 18. On the other hand, this reduced image data G _M-1 Is the interpolation processing unit 2 _M-1 And is interpolated. The image data that has undergone the interpolation processing is output to the arithmetic unit 3 _M-1 Is input to the input on the minus side, and is input to the input on the plus side. _M-2 Is calculated. Calculated difference data L _M-2 Is the difference data L of the third layer of the Laplacian pyramid _M-2 (Laplacian plane). Hereinafter, the same processing is performed by the interpolation processing unit 2. ₁ ~ 2 ₃ And arithmetic unit 3 ₀ ~ 3 ₂ Respectively, and the difference data L of the second hierarchy ₂ , The first-layer difference data L ₁ And difference data L of the 0th hierarchy ₀ Are respectively produced.
[0035]
Next, the frame data generation unit 4 _m (4 ₀ ~ 4 _M-1 ) Will be described. First, the original image data G is stored in the data determination unit 7 of the control circuit 16. ₀ Is input, this data G ₀ Is determined to be a prescribed image size of 3072 × 2048 pixels. In this case, the image data G smaller than the specified image size ₀ Is detected, the determination result signal representing the detection result is output to the output 20 of the data determination unit 7, and the reference signal defining the timing at which the frame data is generated is output to the output 22.
[0036]
Based on the reference signal output to the output 22 of the data discriminating unit 7, the frame data generating unit 4 of each layer _m , Frame data is generated, and the generated frame data is _m Is input to the input terminal 19 of the. At this time, on the other hand, the determination result signal output to the output 20 of the data determination unit 7 is input to the switching control unit 8. On the basis of this determination result signal, a switching signal for selectively selecting image data and frame data is transmitted from the switching control unit 8 to each switching unit 5. _m And the data selected according to the switching signal is output.
[0037]
In this manner, the image data G that is smaller than the specified image size of 2048 × 3072 pixels ₀ Is input to the image data recording apparatus 10, frame data representing a frame image corresponding to the image size of the missing pixel is added to the input image data. This switch 5 _m The frame data and the image data selected by the ₀ ~ 6 _M-1 Is input to Encoder 6 ₀ ~ 6 _M-1 Are subjected to an encoding process such as Huffman encoding. The encoded data of each layer is finally stored in an information recording medium such as a writable compact disc (CD-R) such as a photo CD in a predetermined recording format for each layer. Recorded in. Further, as the information recording medium, an IC memory card using a semiconductor memory element can be advantageously used.
[0038]
When image data of a prescribed image size of 2048 × 3072 pixels is input to the hierarchical processing circuit 12, a determination result signal is not generated by the data determination unit 7 of the control circuit 16 and the switching control unit 8 Does not notify the judgment result signal. Therefore, the switch 5 _m Are kept as shown in the drawing. Thereby, the Laplacian plane (L) of each layer generated by the layering processing circuit 12 ₀ ~ L _M-1 ) Is encoded by the encoding circuit 14 as it is.
[0039]
As described above, even when the image size of the input image data is smaller than the specified image size, the image data of the specified image size is eventually switched to the switch 5. _m And can be encoded by the encoding circuit 14. The encoded data is recorded on an information recording medium such as an optical disk. When the encoded data recorded on the information recording medium is reproduced in this way, it is possible to obtain a reproduced image in which a frame having a different color for each layer is supplemented. Therefore, it is possible to obtain an image to which a frame image of a color or a pattern suitable for a medium or a reproducing apparatus for forming a reproduced image is added.
[0040]
The above embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention. For example, in the embodiment, the frame data is prepared for each hierarchy. However, a method may be used in which a plurality of frame data is prepared regardless of the hierarchy and selectively used from the prepared frame data. . Further, a frame data generation processing unit 4 _m The frame data generated by may not only represent a frame of a different color for each layer, but also have a picture in the frame itself.
[0041]
The configuration for generating the frame data shown in FIG. 2 corresponds to the interpolation processing unit 2 shown by the same reference numeral shown in FIG. _m And arithmetic unit 3 _m In this case, the layering processing circuit 12 has a configuration for preparing a Gaussian plane representing a frame image corresponding to the resolution of each layer, and the interpolation processing unit 2 _m And arithmetic unit 3 _m The frame data generated in step 4 is changed, for example, by switching, _m , Respectively. In this case, the frame data generation unit 4 of each hierarchy _m Has a function of holding the input frame data, and switches the held frame data at the output timing based on the reference signal notified from the data discriminating unit 7. _m It is needless to say that it may be configured to output to
[0042]
【The invention's effect】
As described above, according to the present invention, the first image data representing the original image is processed by the hierarchical processing means to produce the second image data of the hierarchical image data composed of a plurality of layers. According to the image size of the first image data determined by the determining means, the first image data smaller than the predetermined image size is replaced by at least third image data satisfying the predetermined image size. It is generated by the data generating means of the hierarchical processing means. The produced and generated second image data and third image data are selected and switched by the operation of the switching unit based on the control of the switching control unit.
[0043]
Thus, when the first image data smaller than the predetermined image size is input, the insufficient image data can be supplemented by the third image data generated by the data generating means, and the shortage can be compensated. Can be recorded on the information recording medium. Further, in this case, since the image serving as the source of the third image data can be an image composed of a desired color, the first image data is formed of an image of a desired color for each layer. The image to be represented can be supplemented.
[0044]
The data thus obtained is finally recorded on the information recording medium. When reproducing data recorded on the information recording medium, a reproduced image in which an image of a desired color is supplemented for each layer can be obtained.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of an image data recording apparatus according to the present invention.
FIG. 2 is a block diagram showing an example of a configuration for generating frame data in a frame data generation unit of the embodiment shown in FIG. 1;
FIG. 3 is a conceptual diagram showing an outline of data produced by a hierarchical processing circuit in the embodiment shown in FIG. 1;
[Explanation of symbols]
1 ₁ ~ 1 _M-1 Image reduction processing unit
2 ₁ ~ 2 _M-1 Interpolation processing section
3 ₀ ~ 3 _M-2 Arithmetic unit
4 ₀ ~ 4 _M-1 Frame data generator
5 ₀ ~ 5 _M-1 Switch
6 ₀ ~ 6 _M-1 Encoder
7 Data discriminator
8 Switching control unit
14 Encoding circuit
16 Control circuit

Claims (5)

In an image data recording apparatus for processing an original image having a predetermined image size to produce hierarchical image data of a plurality of image sizes in a hierarchy for each predetermined resolution , and recording the produced image data on an information recording medium, The device comprises:
Hierarchization processing means for processing first image data representing the original image and producing second image data of hierarchical image data composed of a plurality of image size hierarchies in the respective hierarchies ;
Switching means for selecting the second image data;
Control means for controlling the connection operation of the switching means,
The control means includes: data determination means for determining an image size of the first image data based on the first image data;
Switching control means for controlling selection of the second image data by the switching means when the image size of the first image data determined by the data determination means is smaller than the predetermined image size; ,
A plurality of reduction processing means for sequentially reducing first image data representing the original image in accordance with a resolution hierarchy;
Calculating means for processing the reduced image data reduced by the reduction processing means to generate second image data;
Wherein a frame data representing a frame image to be applied around the image of the image size less than Suyo each level of the image in each layer is respectively hierarchy data and the current hierarchy, each representing a frame image of the current hierarchy and a data generating means for generating frame data corresponding to the difference between the data representing the hierarchy of the frame image of one stage higher than the third image data,
Said switching means, said data when the image size of the first image data determined by the determining means is less than the predetermined image size, under the control of the switching control means, a second of said each hierarchy An image data recording device for switching the selection from the image data to the third image data and outputting the selected image data. In the image data recording apparatus according to claim 1, wherein the data generating means, when the image size of the first image data is less than the predetermined image size, and fill at least the prescribed image size, each layer An image data recording apparatus for generating third image data separately representing a frame image of an arbitrary color. 2. The image data recording apparatus according to claim 1 , wherein said data generating means generates third image data representing a frame image having a predetermined picture for each layer . 2. The image data recording apparatus according to claim 1, further comprising an encoding unit that encodes the data selected by said switching unit. 2. The image data recording apparatus according to claim 1, wherein the information recording medium on which the image data of the predetermined image size is recorded is an optical disk.

Images