JPS6248870A - Color encoding processing method - Google Patents

Abstract

PURPOSE:To prevent the increase of a line synchronizing code or a code volume at the fluctuating point of a line by generating encoding information from picture information to which color information divided into color primary components is linked in a main scanning direction, resolving it after decoding and restoring it to original information. CONSTITUTION:A color picture information input 1 that is divided into three color primary components x1-x3 and arranged in parallel are stored at line memories 2. And at a time when the share of one line is stored, an inputting is temporarily stopped and they are inputted to a multiplexer 3 by every line unit in the sequence of x1, x2 and x3 components and are converted to the picture information of three components connected in series, and are linked in the main scanning direction, being introduced to a single color encoder 4 having 3N-number of main scanning picture elements and being encoded and an encoding information output 5 is generated. At a restoring side, code information 6 is inputted to a single color decoder 7, being restored to the picture information having 3N-number of main scanning picture elements. The picture information is divided into three components by every line unit by a multiplexer 8, being inputted to line memories 9. And they are outputted as restoration color picture information 10 in parallel at a time when the share of one line is stored.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a color encoding processing method in a color facsimile machine or the like.

BACKGROUND ART The conventional color encoding processing method is as shown in FIG.
Primary color components x4. x2. . . . For n monochromatic images separated into As shown, encoded information for one page was generated by applying the single-color encoding processing method in a field-sequential manner.

Problems to be Solved by the Invention However, according to such a processing means, in the case of line sequential processing, it is necessary to operate the monochromatic encoder in a time-division manner for each component, making its configuration and control extremely complicated. , In addition, in the case of frame sequential, not only a huge amount of image information memory is required, but also the number of lines is treated as n times the actual number.
The number of changing points at the beginning and end of the line and the line synchronization code are also n.
There was a problem in that this was doubled, which was disadvantageous in terms of encoding efficiency.

In other words, the reason for the above-mentioned problem is that, first, the reading and recording methods for inputting and outputting color images handle primary color components in parallel, whereas they must be serialized on the transmission path. The second reason is that the monochrome encoding processing means performs the encoding process line by line.

The present invention has been made in view of the above-mentioned problems, and it does not require the encoder to operate in a time-division manner for each component, and the number of line synchronization codes and the number of change points at the beginning and end of the line is the same as the original number. It is an object of the present invention to provide a color encoding processing method that does not increase the number of colors.

Means for Solving the Problems The present invention solves the above-mentioned problems by using n types (n
≧2) primary color components (*1.X2+'...,"n-
The color image information with the number N of main scanning pixels divided into 1'X) is concatenated in the main scanning direction, and the image information with the number nxN of main scanning pixels is subjected to monochrome encoding to generate encoded information. , after decoding, it is equipped with processing means that divides one line into n equal parts and restores the original color image information.

Effect of the Invention In the present invention, the above processing means turns color image information into a pseudo-monochrome image, so there is no need for time-division operation of the encoder, and the number of lines to be handled is not affected by the number of components. Since the number is the same as the original number, it is possible to prevent the code amount from increasing due to line synchronization codes and changing points at the beginning and end of the line.

Embodiment Next, the present invention will be explained with reference to an embodiment shown in FIGS. 1 to 3.

FIG. 1 shows a schematic configuration of the color code and decoder of the present invention, in which 1 indicates input color image information divided into three primary color components and arranged in parallel, 2 indicates each component "11". ”2
``3 is a line memory for N pixels that is stored every 3, 3 is a multiplexer that serially rearranges the image information in this line memory 2, 4 is a monochrome encoder corresponding to the number of main scanning pixels of 3N,
6 is a coded information output, 6 is input information coded by the encoder 4, 7 is a monochromatic decoder corresponding to the same encoding processing method as the encoder 4, and 8 is this decoding 9 is a line memory for N pixels; 10 is a color image information output in which primary color components are arranged in parallel;

The code configured as described above and the color encoding processing method by the decoder will be explained below. is stored in the line memory 2.

Then, when the number of lines has been memorized, the input of image information is temporarily stopped and X 1g per line! 24 x 3
components in order of input to multiplexer 3, where the second
As shown in the figure, the image information is converted into three-component series image information, and as shown in FIG. It is encoded and becomes encoded information output 6. On the other hand, on the restoration side, the encoded information 6 is input to a monochromatic decoder 7 corresponding to the same encoding processing means as the encoder 4, where the main scanning pixel number 3N
image information is restored. This image information is divided into three components line by line by a demultiplexer 8 and input into a line memory 9. When one line of data is stored, it is output as three-component parallel restored color image information 10.

Effects of the Invention As is clear from the above explanation, the present invention has n types (n
The color image information divided into components of ≧2) is connected line by line, and encoded information is generated by applying a monochrome encoding method to this, while after decoding, one line is divided into n equal parts. By dividing the color image into two and restoring it to the original color image information, the color image becomes a pseudo-monochrome image, eliminating the need for time-division operation in the encoder, and reducing the number of lines handled by the number of components. Since the number is the same as the original number without being affected by This has the advantage of being consistent in that respect, and reducing production costs and transmission costs.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a schematic configuration diagram showing an embodiment of a color code and decoder in a color encoding processing method according to the present invention;
The figure is also an explanatory diagram of rearranging image information, Fig. 3 is an explanatory diagram of the processing state, Fig. 4 is an explanatory diagram of a color image, and Figs. 6 and 6 are explanatory diagrams of conventional color encoding processing means. It is. 1...Color image information input, 2...Line memory for each component, 3...Multiplexer,
4...Monochrome encoder, 5...Encoded information output, X1+X2+X3...
・Primary color components. Name of agent: Patent attorney Toshio Nakao and 1 other person @1
Figure 2 ε ″)

Claims (1)

[Claims] While separating into at least two or more mutually independent n types (n≧2) of primary color components, the read color image information of the number N of main scanning pixels is arranged for each primary color component, and this is concatenated to perform main scanning. A color encoding processing method that performs monochrome encoding processing by converting image information into n×N pixel number image information.