JPS60197073A - Color designation processing unit of color picture - Google Patents

Abstract

PURPOSE:To automate the designation of many colors with less amount of information by using a color data as a read address at each picture area of a color picture and reading and outputting a texture designation data and a hue data. CONSTITUTION:An input color picture data is written in the 1st frame memory 41 and stored as an original picture data. Either an NTSC color television signal or an RBG color signal is selected from the input color original picture data by switching an input selection circuit 10 and a synchronism selection circuit 15. The original picture data stored in the 1st frame memory 41 is converted into a white/black picture data by an RGB/Y converter 68 and stored also to the 4th frame memory 44. The color processing of the input color picture data is supplied based on the picture data stored in the frame memories 41, 44 and the picture data suitable for a geometrical command data is formed finally by applying automatically the saving processing of redundant data.

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a signal processing device used in a digital image information transmission system such as so-called videotex or teletext that transmits various image information using a telephone line or a wireless line. color. The present invention relates to a color specification processing device for a color image, which handles an image as a set of geometric figure areas and converts the color image information into geometric command data. [Background technology and its problems] In recent years, with the development of the information society, digital image information transmission systems such as Videotex and Teletext have been developed and used as so-called new media for transmitting various image information.
Practical implementation is progressing in various countries. For example, in the UK there is a Captain System (Character System) called Prestel (PRES).
And Pattern Telephone Acc
ess Information Network S
system) was developed, Saraoco, France's Telechill (Te1etc+), and Canada's Teliton (Te1etc+).
idon), American NAPLP (Nort
h American PreSentation L
evelProtocol) and others are being put into practical use. By the way, one image adopted in the above-mentioned Territon system is treated as a set of geometric figure areas and the image information is PDI (PictureDescr).
(Iption In5truction): The method of expressing and transmitting geometric command data using an L-code is extremely efficient compared to other methods of expressing image information in correspondence with mosaic picture elements or character codes. Its high efficiency is what makes it so good. The above PDI code contains five types of command data [POINT] and [LINE
] , [, l(C], [IAi7EA/] , [POL
YGON], command data [BIT] for the dot-compatible graphics command, and command data [C0NTR0L] for specifying hue, gradation, etc. and controlling the mode of the drawing command. The above command data [POINT] sets the drawing start point or plots the point PO at an arbitrary coordinate position on the display screen as shown in Figure 1A.
L I N E ], as shown in Figure 1B, the distance between two points P
Draw a line segment connecting h and Pz. Furthermore, in the above command data [A⇠C], two points Pl and P2 are shown in Figure 1 °C.
Draw an arc based on the coordinates and radius values, and draw a chord connecting the two points PI and PZ as shown by the dashed line in the figure, or draw an arc as shown by the dashed line in the figure. Center point P. Draw a fan shape by connecting the above two points Pi and Pz,
The inside of the canopy outline is filled in. In addition, in the above command data [AREA], as shown in Figure 1 °C, draw the outline of a rectangle with two points Pi and P2 as diagonal vertices,
Also, the inside of the outline is filled in, and further,
In the above command data [POLYGON], as shown in the first diagram, the vertices PI, P2. . . . The outline of the polygon defined by +Pn is drawn and the inside of the outline is filled in. However, in the digital image information transmission system that uses geometric command data as described above, it is possible to greatly reduce the amount of image information that is actually transmitted, and it is possible to perform highly efficient information transmission. However, there is a problem in that it requires a great deal of effort and time to create the image information to be actually transmitted, that is, the geometric command data representing one image. For example, the work of converting a video signal of an image to be transmitted into the above-mentioned geometric command data is performed by an operator who uses a tablet to record outline information, hue/gradation information, etc. while viewing the target image on a monitor television receiver. One possible method is to manually input each image, make various corrections, and then convert it into geometric command data, but it is difficult to accurately represent the information in the original image, and it takes a lot of time to input various information. It requires effort and time. [Object of the Invention] Therefore, in view of the above-mentioned problems, the present invention deals with treating one color image as a set of geometric figure areas and transmitting the image information by representing it in geometric command data. The purpose is to automate the process of converting the above image information into geometric command data, and to accurately and quickly automatically generate command data for hue specification for valley geometric regions of color images to be transmitted. The present invention provides a color designation processing device for a color image to be formed. [Summary of the Invention] In order to achieve the above-mentioned object, a color designation processing device for a color image according to the present invention includes an image storage means for storing image data obtained by capturing a color image, and an image read out from the image storage means. Area detection means for detecting each image area of the color image indicated by the same image data regarding the data;
A texture storage means in which texture designation data and hue designation data are written in advance to represent each hue by a combination of a texture pattern and the hue of the texture pattern, using the color data of the color image indicated by the image data as an address; The apparatus is characterized in that texture designation data and hue designation data are read and output from the texture storage means using color data as readout addresses for each image area of the color image. [Embodiment] Hereinafter, an embodiment of the color designation processing device for a color image according to the present invention will be described in detail with reference to the drawings. The embodiment shown in FIGS. 2 to 18 is an example in which the present invention is applied to an input data processing device in a Teliton digital image information transmission system. When an RGB color signal obtained by capturing an image with a camera or a color television signal of a standard television system (for example, NTSC) is input, one frame of color image shown by this input is a set of geometric figure areas. Geometrical command data representing the above-mentioned color image is generated by the microcomputer 100 and outputted through the data bus. In the second block diagram showing the overall configuration of the device of this embodiment, for example, an NTSC color television signal is input to the NTSC/I'4GB via the first signal input terminal 1.
Supplied to converter 5 and synchronous separation circuit 6, excellent RGB
The color signal is sent to the input selection circuit 1 via the second signal input terminal 2.
0. The input selection circuit 10 receives an RGB color signal obtained by converting the color television signal supplied from the first signal input terminal 1 via the NTSC/RGB converter 5 or is supplied from the second signal input terminal 2. One of the RGB color signals is selected and one of the RGB color signals is supplied to an analog/digital (A/D) converter 20. Further, the synchronization separation circuit 6 separates the synchronization signal in the color television signal supplied from the first signal input terminal 1 and supplies the synchronization signal to the synchronization switching circuit 5. The synchronization switching circuit 5 is supplied with a synchronization signal corresponding to the RGB color signal supplied to the second signal input terminal 2 from the third signal input terminal 3, and is connected to the input selection circuit 1.
0 is performed, and synchronization signals corresponding to the R and GB color signals supplied to the A/D converter 20 are supplied to the address data generation block 30. This address data generation block 30 is made up of a PLL oscillator 31 and a counter circuit 32, and is comprised of a PLL oscillator 31 and a counter circuit 32.
The oscillation output pulses of the oscillator 31 are counted by the counter circuit 32 to form address data synchronized with the synchronization signal, and this address data is supplied to the address selection circuit 35. The address selection circuit 35 selects the address data supplied via the address bus of the computer 100 and the address data supplied from the address data generation block 30, and selects the address data supplied via the address bus of the computer 100 and the address data supplied from the address data generation block 30, , 43, 44, the address data is supplied to the cursor memory 45 and the character generator 46. In addition, each of the frame memories 41, 42, 43,
44, the cursor memory 45, and the character generator 46 are configured to exchange various data through the data bus of the computer 100. The first frame memory 41 is a memory for storing original image data, and the A/D converter 20 digitizes the R, GB color signals, and the input color image data is output from the address data generation block 30. is written for each color of RGB based on the address data. The input color image data stored in the first frame memory 41 is arbitrarily read out at any time and converted into analog RG B color signals by a digital/analog (D/A) converter 61 and sent to the first output selection circuit 71. The color original image can be monitored by being supplied to the first RGE monitor device 81 via the RGE monitor. 2nd to 4th frame memory 42°43.4
4 is used as a general-purpose memory for various data processing such as color processing and redundant data reduction processing for the original image data stored in the first frame memory 41, and is used to store various image data in various processing processes described later. Writing/reading is performed through the data bus. The processed image data stored in the second frame memory 42 is converted into color data in the color table memory 52 and returned to analog RGB color signals via the D/A converter 63. It is supplied to a second output selection circuit 71.72, so that the data-processed color image can be monitored by the first or second It, GB monitor device 81.82. Further, the processed image data stored in the third frame memory 43 is converted into color data in the color table memory 53 and returned to analog RGB color signals via the D/A converter 64. The second RGB from the second output selection circuit 72
The data can be supplied to a monitor device 82 to monitor the data-processed color image. Further, the fourth frame memory 44 transfers the original image data stored in the first frame memory 41 to the D/A converter 61.
RGB/Y after returning to analog RG B color signals at
Converter 68 converts to luminance Y signal and further A/D
The original black and white image data obtained by digitizing via the converter 69 is written. After performing redundant data reduction processing on this black and white image data, the black and white image data is stored in the color table memory 53 and the D/A.
The signals are returned to analog RGB color signals via the converter 63 and supplied to the signal synthesis circuit 70. The signal synthesis circuit 70 includes the cursor memo IJ45.
A cursor display signal is supplied from the character generator 46, and character data for displaying various system control commands is converted into analog RGB color signals by the color table memory 53 and supplied. An image formed by superimposing an image based on the image data stored in the frame memory 44, a cursor image based on the cursor display signal from the cursor memory 45, and an image based on the character data from the character generator 46.
Combines and outputs GB color signals. This signal synthesis circuit 70
The image based on the R and GB color signals obtained can be monitored by the second RGB monitor device 82, and
The RGB color signals are converted into a luminance Y signal by an R, GB/Y converter 80, and can be monitored by a monochrome monitor device 83. Furthermore, in this embodiment, the microcomputer 1
00 acts as a controller that controls the operation of the entire device, and its data bus and address bus include an auxiliary memory 90 such as a Roll RAM, a floppy disk controller 91, an input/output interface circuit 93, and high-speed arithmetic processing. A circuit 200 etc. are connected. Incidentally, a tablet 94 and its monitor device 95 are connected to the input/output interface circuit 93 for inputting various data during manual editing processing. The apparatus of this embodiment performs image processing according to the procedure shown in the flowchart of FIG. It is designed to be converted into command data and output through the data bus. That is, input color image data is first written into the first frame memory 41 and stored as original image data. Here, the input color image data can be changed by switching the input selection circuit 10 and the synchronization selection circuit 15.
NTSC color television signal or 11. It is possible to select from either of the GB color signals. Further, the original image data stored in the first frame memory 41 is R
The data is converted into black and white image data by the G B/Y converter 68 and is also stored in the fourth frame memory 44 . Next, the 18th and 4th frame memories 41, 44
Based on the image data stored in the image data, the input color image data is color-processed, redundant data is further reduced, and the image is finally converted into geometric command data without losing the characteristics of the original image. Automatically generate image data suitable for After performing each of the above processes, a conversion process for converting the image data into geometric command data is automatically performed. Note that when the original image is artificially modified and transmitted, manual editing processing is performed before the above-mentioned geometric command data conversion processing. In the above color processing, the top n colors with high frequency in the original color image indicated by the input color image data stored in the first frame memory 41ζ are automatically selected, and the above 1] is applied to each pixel. The process of assigning one of the colors is performed in accordance with the flowchart shown in FIG. In this color processing, the high-speed arithmetic processing circuit 200 first creates a histogram of each color data for the input color image data stored in the first frame memory 41, and then selects the top n color data of this histogram. Select. Next, for each image area shown with the same brightness of the black and white image represented by the black and white image data stored in the fourth frame memory 44, 11 Colors are assigned to form color full data in order of brightness, and the color table data is corrected so that the deviation is minimized for each pixel. The color full data formed in the high-speed operation processing circuit 200 in this way is stored in each color table memory 51, 52, and 53. Furthermore, the color-processed image data in which the n colors are assigned to each of the image areas is written into the second frame memory 42 . The color image subjected to the above color processing is generated by reading out each color data from the first color table memory 41 using the image data stored in the second frame memory 42 as address data, second R,
It is monitored by OB monitor devices 81 and 82. In the above redundant data reduction process, the above 2'j6
and fourth frame memo 1) 42. Performs noise cancellation processing, halftone removal processing, small area deletion processing, etc. on each of the stored image data, and then performs data conversion processing to the next geometrically variable command 1. Reduce the amount of information by removing unnecessary redundant data. This reduction process is performed by the high-speed arithmetic processing device 200. For example, as shown in FIG. 5, nine 3×3 pixels [A], CB], [C], CD], [E], [F
], [G], [I(], [■]), 4 neighboring pixels [13], [D], [
When three or more data among [F], CH] are the same, the noise canceling process is performed by replacing the data of the center pixel [E] with that value. Furthermore, for the center pixel [E], each pixel column [:A
-E・I], CB-E・I], [C-E,G], CD・
E - F ], if two or more are monotonically increasing or decreasing, the middle pixel CE) above is set as the middle tone pixel, and the nearest value in the 8 neighborhood is set to the 17y pixel [E] above. By replacing the data, the above-mentioned halftone removal is carried out. Further, the small area deletion process is performed by merging small areas with an area smaller than a specified area to adjacent areas. In this way, the high-speed arithmetic processing circuit 200 performs redundant data removal processing, and the image data is read into the third frame memory 43 and sent to the second RGB monitor via the second color table memory 52. Monitored by device 82. Furthermore, in the above-mentioned manual editing process, new motifs are added or deleted, colors are corrected, etc. artificially added to or deleted from the color image represented by the image data obtained by automatically performing the above-mentioned color processing and reduction processing. Perform the process to add. This manual editing 1-processing is performed using a transparent tablet 94 provided on the screen of the monochrome monitor device 83 that monitors the image based on the monochrome image data that is about to be stored in the fourth frame memory 44. It's hard. On the screen of the black and white monitor device 83, character information images for displaying various control commands necessary for manual editing are provided by the character generator 46, and a cursor for displaying position information generated from the tablets 1-94 is provided. A cursor image is given in the cursor memory 45, and the operator
Use the included pen to modify images and see the results in real time. In the above-mentioned geometric command data conversion process, for the image represented by the various processed color image data as described above, command data expressed by geometric commands for each image area is converted by the following procedure. Form. First, the boundaries of each image area are determined by the high-speed arithmetic processing circuit 200.
to detect the position coordinates of the valley apex. Next, the detected position coordinates are regarded as the vertex positions of a geometric figure (polygon), and are converted into geometric command data based on the above-mentioned PD■ code, for example, [POLYGOJ]. Further, command data CC0NTR, OL] corresponding to the color determined by the color processing described above is given to each image region represented by the geometric figure connecting the respective vertices. For example, as shown in FIG. 6, each vertex Po, Pl. ..., When converting the image area AR connecting P4 into command data using PDI code, specify the image area AR hue using a texture pattern TXP and a combination of the hues of the texture pattern TXP. Vertices Pa, PI, +... Each position coordinate of P4 [Xo, Yo], [Xx,
Yt:], -CX4. Y4] and the back color, then specify the texture pattern T
Yo], [Xi. Yl], . . . , [X4, Y4] are coded again to complete the coding for the image area AR. The above texture pattern TXP
For example, as shown in FIG. 7, three types of patterns TX
Pz, TXP2. By selectively specifying TXPa and selectively specifying its color from two colors, black and white, five gradations of color are specified for the image area A, as shown in Figure 8. In other words, if the texture pattern TXP between two types of colors is mp types, and the colors are n types, then there are N2 types of colors, np(np-1) N p ”” n p +X m p can be expressed in a pseudo manner.Here, a specific example of color specification for each image area in this embodiment will be explained.In order to simplify the explanation,
Input color image data is R,G. It is assumed that the hue of the original image is represented by color data of 38=27 colors, with each hue of B having three levels. For example, as shown in FIG. 9, each level of JG and B is [0,
In order to synthesize hue C0 shown in and CO,
The hue Cy shown by the dashed line in the figure of (1, 2) is 1:I
They should be mixed in the proportion of In other words, the foreground color is C
F[0,2,2], back color CB[Q. 0.2] and use a checkered texture pattern. Therefore, the color data Dc[R,Q of the input color image data indicating the valley hue of the original image. 27 colors can be specified by reading and addressing texture data shown in FIG. 10 from the texture memory. Note that the texture data is the foreground color specification data D.
CF L R, G, B] and back color specification Q/Dcn [R, G, B] and texture specification data D
DTX = 0 indicates that the color is specified using only the foreground color, and DTX = 1 indicates that a checkered texture pattern is specified. Furthermore, the above-mentioned determination of each image area may be performed by using a boundary detection circuit having a configuration as shown in FIG. 1I, which is implemented in the high-speed arithmetic processing circuit 200. In FIG. 11, image data for one frame of an image to be processed by this apparatus, n hits per pixel, is written in advance in an image memory 210. The image memory 210 is a randomly accessible R
, AM. Further, the address line of the image memory 210 contains offset data read from the offset ROM 202 addressed by the count output of the timing counter 201 that counts clock pulses supplied from the microcomputer 100 and the microcomputer 100. An address line obtained by adding center address data supplied from the adder 203 is supplied. Furthermore, the output of the timing counter 201 is applied to the write/read control line of the image memory 210 by a timing gate 204.
The R'/WR signal obtained by Here, the timing counter 201 counts the clock pulses and outputs a count in lO base, as shown in time chart 1 in FIG.

[0]. [1],...

[9] The above Offsera 1N (0M20
2 and timing game 1-204. In addition, the Offsera 140M2[)2 has the counting output [0],
[l],...

Offset data [@], C■], [■] to the address specified in [9]. ..., [■], [■], [■] are written. Off-sera above!・Data [・■ko, [■], [■]. ..., [■], [■], [@] are 3 shown in Figure 13.
This corresponds to nine pixels in rows and three columns: ■, ■, ■, . . . , ■, ■. Moreover, the above timing game +-204 has the above counting output [OLl],...

By decoding [9] to 1, the count output

The count is output from [0], and during the period 8], the writing period TR is indicated by a logic (river), and the count is output [9].
] During the period, the R/WR signal indicating the read period '1' WR is formed at logic 10'. Then, the adder 203 adds the center address data and the offset data, thereby
The detection target pixel specified by the center address data above is the center pixel ■, and its 8 neighboring pixels ■, ■,...
, (2) and the center pixel (2) are sequentially designated during one cycle. Image data sequentially read out from the image memory 210 is supplied to an n-bit 9-stage shift register 220 through a data line. This shift register 22
0 sequentially transfers the image data according to the clock pulse, and the 9 pixels in the 3 rows and 3 columns ■, ■, ..., ■
Each image data is temporarily stored. Each of the image data temporarily stored in the shift register 220 is supplied to the data comparison circuit 230, and
The image data of the pixel 8, that is, the pixel to be detected, is compared with the image data of the 8 neighboring pixels ■, ■, . . . , ■. The data comparison circuit 230I is composed of eight comparators 231, 232, . The direction ROM 240 is pre-written with direction data indicating the direction in which the image boundaries are continuous, and is arranged so that this direction data is read out as a boundary detection output via the latch circuit 250. The latch circuit 250 is
The R/W I (, signal or latch clock is supplied from the timing gate 204, and this R/WR
The direction data is latched at the timing of the fall of the signal, which is the timing when all the image data of each pixel ■, ■, ..., ■ is temporarily stored in the shift register 220. There is. In addition, this latch circuit 2
The boundary detection output, i.e., one direction data, outputted through 50 is supplied as address data to the above-mentioned direction 1 (, O[VI240. , ■. ..., The direction in which the boundaries of the images shown by ■ are continuous is
When the above middle 'L> pixel ■ is the detection target pixel, the first
Eight types of direction data Do [-”], D shown in Figure 4
1[1], D2[\], . . . , ]Ih[s]. Also, if the boundary of the image is continuous with respect to the center pixel ■, for example, 8 neighboring pixels ■,
When detecting ■, ..., ■ in the counterclockwise direction, the above-mentioned directional data Do, D1°..., D7
is determined by the image data of the other four pixels, provided that the image data of each pixel (2), (2), . . . , (2) is in a state as shown in FIG. In other words, for each direction data DO2Dl, ..., D7,
The four pixel data are uniquely determined. In addition, the 14th
In the figure, ◯ marks indicate that the image data match, and X marks indicate that the image data is opaque. Then, when consecutive boundaries of the image are sequentially tracked in a counterclockwise direction, the direction data obtained in the previous detection operation and the current detection target pixel, that is, the center pixel ■, 8 neighboring pixels ■, ■, . . .・. Direction data can be uniquely determined from the matching/mismatching state of each pixel data (2). That is, first, to determine the first detection target pixel in the image area where boundary detection is to be performed, for example, search the image data from the bottom left of the image, and select at least 4 out of 8 neighboring pixels as shown in FIG. It is sufficient to detect a detection target pixel in which the pixels ■, ■, ■, ■ are all in a mismatch state with the center pixel ■. The direction detection output for this first detection target pixel is Do[-], DIC,
p), D2 [1], and each pixel ■, ■. As shown in FIG. 15, it can be determined uniquely depending on the contents of the image data Δ in (2). In addition, the state in which the direction is detected by following the boundary is determined by the previous detection operation. For pixel ■, the matching/mismatching states of three of the eight neighboring pixels have already been determined, and the pixel data △ of the other five pixels are used to The direction detection output is uniquely determined as shown in FIG. Direction data Do, DI, ... ID? uniquely determined by the direction data, that is, the match detection output of each image data of ■, ■, ..., ■, is written in advance, and if the above match The above direction data Do is read using the detection output data and the direction data as a read address,])1. ...
, D? is read out as the boundary detection output. As in this embodiment, if the direction data written in advance in the direction ROM 240 is read out using the output data of the comparator circuit 230 to obtain the boundary detection output, the conventional 16
Image boundary detection processing, which used to require processing time of several tens of microseconds on a BISOTO microcomputer, can be performed in an extremely short time of about 1 to 3 microseconds. In this boundary detection circuit, the detection level data is input to the data line via the 3-state interface circuit 205, and the I(, /WR signal is set to logic "0", that is, the 3-state interface circuit 205 is inputted to the data line). By controlling the state interface circuit 205 to an enabled state, the boundary detection level can be changed arbitrarily.Also, the latch circuit 250 can be changed from the direction ROM 240A.
All bits of the direction data read out from the direction data A are used as address data for the direction ROM 24 (IA), but as only the main part is shown in FIG. Bit data [B2
] Only the above direction ROM2 is connected via the latch circuit 250A.
4 The data may be returned to QA as address data. In other words, when sequentially detecting continuous directions of image boundaries as described above, the match/mismatch state of three of the eight neighboring pixels with respect to the current center pixel ■ is determined by the boundary of the previous detection operation. This has already been determined, and the output data of the comparison circuit 230 is also determined to be 3 hours I·min as shown in the Table of Contents. Existing table: Table showing the output of the comparison circuit 0: Mismatch l Mismatch And, since the valley bit data within the valley frame indicated by the thick line in Table 1 above indicates different contents, the previous detection operation The highest hit of the direction data D obtained by [B1
] data, the previous detection target pixel position is ■ compared to the current center pixel ■. If you specify whether it is located at each pixel position of ■, ■, ■ or at each pixel position of ■, ■, ■, ■, the output data of the comparison circuit 230 Ao, A], -, A7. Orientation data can be determined. In this case the direction ItO
Direction data as shown in FIG. 18 may be written in M240A in advance. In this way, only the I-bit direction data DCBPI is set to 1.
- If the direction data is read out by returning as a restator, the storage capacity of the direction ROM 240A can be reduced and the latch circuit 250A can be simplified. [Effects of the Invention] As is clear from the description of the embodiments described above, the color image encoding processing device according to the present invention can process each $1 color image represented by the color image data stored in the image storage means. Since colors are specified using texture specification data and color specification data for each image area, it is possible to automatically specify a large number of colors with a small amount of information, making this color specification processing suitable for input image processing in digital image transmission systems. equipment can be provided. 2A and 2B are schematic diagrams each schematically showing graphic processing using PDI codes. FIG. 2 is a block diagram showing an embodiment of the image color designation processing device according to the present invention. FIG. 3 is a flowchart showing the image processing procedure in this embodiment, and FIG. 4 is a flowchart showing the color processing procedure. Fifth
The figure is a schematic diagram showing an arrangement of processing target pixels for explaining the operation of the information amount reduction processing in the above embodiment. 6th
The figures and the first θ are each schematic diagrams for explaining the color designation process in the coding process of the above embodiment, and the sixth
The figure shows the image area to be processed, FIG. 7 shows each side of the texture pattern, and FIG. 8 shows the color of each texture pattern shown in FIG. 7 above for the image area shown in FIG. Fig. 9 shows the operating principle of color specification when converting 3-level color data to 2-level color data, and Fig. 10 shows the color specification of 27 colors according to the above-mentioned color specification operating principle. An example of texture data used when performing the following is shown. 11 to 18 show an example of the image boundary detection circuit in the above embodiment 8, FIG. 1I is a block diagram showing the configuration of the boundary detection circuit, and FIG. 12 is a block diagram of the above detection circuit. This is a time chart showing the operation, and Fig. 13 is a schematic diagram showing the arrangement of each pixel that is the target of the detection operation, and Fig. 14 is the direction in which the boundary of the image is continuous with respect to the detection target pixel, and the direction of each pixel. FIG. 15 is a schematic diagram showing the principle of operation for determining the detection direction during the initial detection operation of a boundary. FIG. 17 is a schematic diagram showing the contents of the image data of each pixel and the detection direction when the direction is sequentially determined, and FIG. 17 is a block diagram of the main part showing a modification of the boundary detection circuit shown in FIG. 11 above. FIG. 18 and FIG. 18B are schematic diagrams respectively showing direction data written in advance in the direction ROM in the above modification. 41.42, 43.44...Claim memory 51
．． 52.53...Color table memory 90.
・・・・・・・・・・・・・・・・・・・・・・・・Auxiliary memory 100・・・・・・・・・・・・・・・・・・・・・
・・Microcomputer 200・・・・・・・・・・
...... High-speed arithmetic processing circuit 210...
・・・・・・・・・・・・・・・ Image memory 22
0・・・・・・・・・・・・・・・・・・・・・Schiff I
・Register 230・・・・・・・・・・・・・・・・・・
...Data comparison circuit 240.24OA...
Direction ROM 250.25OA... Latch circuit Patent applicant Sony Corporation Representative Patent attorney Kodo Koike 1) Sakae Mura - Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 ■ [ [- Figure 13 Figure 12 Figure 14 Figure 15 Figure 16 (C) Figure 16 (D) Figure 16 (E) Figure 16 (F) Figure 16 (G ) Figure 16 (H)

Claims (1)

[Claims] an image storage means for storing image data obtained by capturing a color image; an area detection means for detecting each image area of the color image indicated by the same image data with respect to the image data read from the image storage means; Texture storage means in which texture designation data and hue designation data are written in advance to represent each hue by a combination of a texture pattern and the hue of the texture pattern, using color data of a color image indicated by the data as an address. A color designation processing device for a color image, characterized in that texture designation data and hue designation data are read out and output from the texture storage means using color data as a readout address for each image region of the color image.