JPS60150383A - Picture signal processing system - Google Patents

Abstract

PURPOSE:To prevent a processing picture signal from being distorted or skipped by using a processing signal as an output picture signal of a means ORing it with a white picture signal (a white picture signal is formed if any of n-picture elements is at a white level) when a picture signal processed just before is a black picture signal, and using a processed picture signal a means ORing (a black signal is formed if any of n- picture elements is at a black level) the processed picture signal and the black picture signal when the picture signal to be processed just before is a white picture signal. CONSTITUTION:When the main scanning picture element number transmitted from the device is halved to the total picture element number in the main scanning direction, a picture signal converted into an electric signal by a photo-electric converting section 2 is formed into a black/white binary-coding signal as shown in Fig. A by a black/white binary-coding circuit 3 by using a quantization circuit 3. The binary-coded picture signal is inputted respectively to a black picture signal OR circuit 4 and a white picture signal OR circuit 5. The black picture signal OR circuit 4 is controlled by a picture signal control section 8 so that the binary-coded picture signal is ORed with the black signal in the unit of two picture elements and outputs a black OR picture signal as shown in Fig. B. Similarly, the white picture signal OR circuit 5 outputs a white OR picture signal as shown in Fig. C.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a facun milli device and similar devices thereof, and in particular to an image signal processing method in which the number of transmitted main scanning pixels is 1 (n is an integer) relative to the total number of pixels in the main scanning direction. It is related to.

Prior Art Conventional image signal processing methods include extracting image signals for each pixel and determining the image signal, as shown in Figure 1 (A>), as an example of determining the total number of main scanning pixels. Figure 1 (I
As shown in 3), a method is used in which the black signals are ORed for each two pixels to determine both signals.

In the conventional system, in the case of the method shown in Figure 1 (4), the black signal continues even though there is a white signal among the black signals, or even when there is a black signal among the white signals. Regardless, the white signal continues and the reproduced image will be distorted or broken. In addition, in the case of method () in Figure 1,
As shown in the figure, even though there is a white signal in the black signal, the black signal is continuous and the reproduced image is distorted.

I-1 of the Invention The present invention is to improve river fish, and a simple method 17. Due to L, the processed image signal may be corrupted or lost.
The objective is to provide an improved image signal processing method that does not drop out.

According to the invention, ν, j
In the image processing method in which the number of main scanning pixels sent from i'i is ± (n digit integer), the unprocessed 1ijii signal is converted to 0R (any of the n pixels) of the white image signal at A means to take C) white picture A1j'-8),
The image before processing is n pixels! 1'2/shibill'l] 1
■Processing both ears, (either black picture signal or white picture signal, 1
1'11) II No. 1] 11 Image A1. The bow is °, 1
．．゛、Both A1. ↓ 1, the processed signal is the output image signal of the digit r'y which takes the OR of the white image A1
If (white image 1, ', > 3-), the image signal control means controls the processing rllj image signal (11) so that the output of the black music white 1. Both signal processing methods are obtained.

Embodiment Next, an embodiment of the present invention will be described in detail with reference to FIGS. 2 and 3.

FIG. 2 shows a block configuration diagram of the present invention,
■ is a lens system, 2 is a photoelectric conversion unit, 3-digit (binary) quantization circuit, 4-digit black image signal OR circuit, 6° and 7-digit image signal passing gates, 8-digit image signal control unit, 9-digit processing image This is a signal output section.

In this embodiment, an example will be described in which the number of main scanning pixels sent out from the apparatus is blue with respect to the total number of pixels in the main scanning direction. The image signal converted into an electric signal by the Sunzu photoelectric conversion unit 2 is converted into a (binary) quantization circuit 3 as shown in FIG.
As shown in A, it is a black and white binary image signal. Both binarized signals are further sent to a black picture signal OR circuit 4 and a self picture signal O.
The signals are respectively input to the R circuit 5. The black image signal OR circuit 4 converts the binary image signal (FIG. 3 (5)) so that it takes the black signal 0R (if any of the two pixels is black, it represents a black image signal) in units of two pixels. It is controlled by the image signal control section 8, and as shown in FIG.
■ Outputs the black OR and double words as shown in 3).

Similarly, self-image signal OR circuit 5-digit binary image signal (715
3(A)) is controlled by the image signal control unit 8 to take the QR of the image signal in units of two pixels (if any of the two pixels is white, it is a self-portrait signal); White O as shown in
Outputs an R image signal. Further, the black OR image signal output from the black image signal OR circuit 4 and the self-image signal OR circuit 5, the white O
The R image encoding code is input to both signal passing gates 1, 6 and 7 which are controlled by an image signal control section 8, respectively.

Therefore, by inputting the processed image signal of the processed image signal output section 9 and monitoring the processed image signal, the both signal control unit 18 inputs the processed image signal of the processed image signal output unit 9, and when the immediately preceding processed image signal is a black image signal, the 1st side signal 11'1 '1 By turning on the gate 7, the white OR image signal which is the output of the self-image signal OR circuit 5 is divided into two pixel units and the processing surface 31 is processed.
Bow - output to the output section 9. Similarly, if the image signal processed immediately before the image signal J° control unit 8 is a self-image signal, both signals 11
'l'! By turning on the overgate 6, the black image signal O
The black OR image signal output from the R circuit 4 is output to the processed image signal output section 9 in units of two pixels. In addition, both signal control section j section 8 selects 11 "j next Kuroyama old name 0Rri" according to the level (black, white) of the immediately preceding Chikuri ryoshin jg and black 01 kryoshingetsu and white, which are the output signals of 1st route 4. (q) The white OR image signal, which is the output signal of the bow OR circuit 5, is switched and outputted to the processing and output unit 9. Both processed signals shown in FIG. 3(D) are output.

In the first example above, the total image in the main scanning direction = (・, taking into account the number, the number of main scanning pixels sent out from the device is good.'', -4
However, when applying the same image signal processing method as described in 1 of this Detailed Guide, and applying the same image signal processing method as described in 1. It is clear that it is possible to use a processing method.

Effect 1 of the invention: By using the method described in the present invention, processed image signals as shown in ``1) in Figure 3'' were obtained, whereas the processed image signals in the conventional method were different from those shown in Figure 1 (A), ■). As you can see from the comparison, improved processing is used to prevent the black signal from being distorted or dropped.
The number is written in the middle of the 1st slot.

[Brief explanation of the drawing]

FIG. 1 is a diagram explaining a conventional image signal processing method, FIG.
FIG. 2 is a diagram illustrating a processing process of a signal processing method of blocks in the figure. Explanation of symbols of main parts 4... Tadanobu q OR circuit 5... White signal OR circuit 6
．． 7...Game 1, 8, 1ij7 Signal Control Department Applicant Japan 1↑Lki Co., Ltd. Agent Patent Attorney Shin Yanagawa

Claims (1)

[Claims] In an image signal processing method in which the number of main scanning pixels of the processed image signal sent from the device is 1/n (n is an integer) with respect to the total number of pixels in the main scanning direction obtained by scanning the image,
A self-picture signal OR means and a black picture signal OR means which respectively perform an OR of the self-picture signal and an OR of the black picture signal for each n1il'ii element unit of both signals before processing, and determine whether the immediately-processed picture signal is a black picture signal or a self-picture signal. and an image signal control means for determining a processed image signal to be derived by 1;
The image signal processing method is characterized in that the one-page signal control means is controlled to select the output of the black image signal OR means as the processed image signal when the immediately preceding processed image signal is a self-image signal.