JPS62175083A - Picture processor for color picture - Google Patents

Abstract

PURPOSE:To simplify the constitution of the titled device by processing a picture based on a signal that corresponds to one of the three primary colors of three rays of light which are a color picture signal. CONSTITUTION:A picture signal which is an output signal from a color ITV camera 1 is separated into three primary-color light signals which are a red- signal, a green-signal, and a blue-signal by a signal separator circuit 2. One of the said three signals is outputted to a picture processor 3, which processes a black-and-white picture which is obtained from the inputted signal. As a result, comparing with a case of processing all the color signals, the amounts of both softwares and hardwares can be drastically decreased.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an apparatus for processing color images.

[Conventional technology]

Image processing methods are used in various fields.
For example, Journal of the Television Society, Vol. 35.

11 (1981), pages 902-906, image processing for sorting fresh foods is one example.

In this processing method, an image signal from an ITV camera is received as a binary image signal, stored in a pattern memory, and image judgment is performed based on data from the pattern memory. The image determination method is performed by determining feature amounts through shape analysis.

[Problem that the invention seeks to solve]

When applying the above method to a device that processes color images, the color image signal is converted into a signal of the three primary colors of light (R
, G, B), a red traffic light. The signal is divided into a green signal and a blue signal, and each signal is processed separately.

When processing is performed in this manner, hardware is required for each signal point of each color, which makes the device complicated and also makes the device large-scale.

The present invention has been made in view of the above points, and an object thereof is to provide a device that executes image processing of a color image using a simple device.

[Means for solving problems]

A color image signal obtained by photographing an object is created using three primary colors of light: a red signal, a green signal, and a blue signal. It is very rare that the color of the object is the same as the above three primary colors, and most of the time it is a color that is an appropriate mixture of the above three primary colors. Therefore, image information obtained by photographing a subject is distributed to each of the three primary colors. The present invention is characterized by paying attention to this point and performing image processing based on information obtained from one color signal out of one image signal.

[Effect]

By configuring the system as described above.

Image processing of color images can be realized with the minimum necessary equipment.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described in detail below with reference to the drawings. In each of the drawings, like numbers indicate corresponding parts.

The first embodiment shows the basic configuration of the present invention. An image signal, which is an output signal of the color ITV camera 1, is processed by a signal distribution circuit 2 as a signal of three primary colors of light. It is divided into red, green, and blue signals. One color signal among the distributed color signals is output to the image processing device 3. The image processing device 3 processes a monochrome image obtained by input signals. Here, the object photographed by the color ITV camera 1 is 377i of light (it is extremely rare that it is a color itself, and most of the time it is a color that is a mixture of these three primary colors. Therefore, it is output by the signal distribution circuit 2. One color signal contains the image of the subject.As a result, processing an image based on one color signal is equivalent to processing the image signal output from a color ITV camera. Therefore, in the embodiment shown in Fig. 1, the image is processed using only one color signal among the three primary color signals of light, so compared to image processing of all color signals, the bird Both the amount of hardware and software can be significantly reduced.

The embodiment shown in FIGS. 2 and 3 is an application example of the embodiment shown in FIG. 1, in which a color image signal is transmitted when the amount of change in image information exceeds a predetermined value. . Examples of these will be described below.

The image processing 3 shown in FIG.
It consists of image memories 4, 5, 6 corresponding to red, green, and blue signals, respectively, and an arithmetic unit 7 that takes in data from one of these image memories and performs image processing. The arithmetic unit 7 periodically reads data stored in the image memory and determines whether there is a change in the image. If the amount of change in the image is greater than or equal to a predetermined value, an output command signal is output to the gate 9 so that the output signal from the signal synthesis circuit 8 is output to the outside.

The embodiment shown in Fig. 3 is similar to the embodiment shown in Fig. 2, but the difference is that the output signals from each image memory are not combined and output, but are outputted independently. That is. Whether or not the output signal from each image memory is output to the outside is determined by outputting a command signal from the arithmetic unit 7 shown in FIG. 2 to the gates 9, 10, and 11.

In the embodiments shown in FIGS. 2 and 3, the case where an image is transmitted when the image changes has been described, but the present invention can be applied to various other uses.

〔Effect of the invention〕

As described above, according to the present invention, image processing is performed using only one of the three primary color signals of light among the color image signals, so that the amount of hardware is small and the processing speed is high. It has great industrial value when applied to general-purpose image processing devices that handle color images.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a basic embodiment of the present invention, and FIGS. 2 and 3 are diagrams showing applied examples of FIG. 1. 2... Signal distribution circuit, 3... Image processing device.

Claims (1)

[Claims] 1. In a device that processes images based on color image signals, images are processed based on a signal corresponding to one color among the three primary color signals of light, which are color image signals. An image processing device for color images, characterized in that it performs the following.