JPS58186022A - Discriminating apparatus of color - Google Patents

Abstract

PURPOSE:To discriminate correctly a color even in case when the capacity of a color receptor is deteriorated and also, to carry out the color discrimination of an object on the two-dimensional face in high speed, by finding the ratio of the three primary colors from an output of the receptor of the three primary colors which senses green, blue and red colors. CONSTITUTION:When colored light is made incident to receptors of blue, red, green 1, 2, 3, these sensing signals (b), (r), (g) are sent to discrimination apparatus 7-9 through interfaces 4-6. The color is discriminated by calculating a ratio P7=b/r of the (b) and a ratio P9=g/r of the (g) basing on the (r) by the apparatus 7 and also, P8=r+g is operated, and the color and the light intensity (P8) are displayed on a display 11. The color is discriminated exactly even if the capacity of the receptors 1-3 is deteriorated because the color is discriminated by taking the ratio of each color sensing signal (r), (b), (g). Further, the color on the two-dimensional face is discriminated in high speed by arranging regularly the receptors 1-3 on a plane.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a color identification device comprising a plurality of color reservoirs and a plurality of processing devices.

Traditionally, color identification devices receive light from a single light-receiving element, analyze the spectrum of that light, collect all the data into a single computer, perform software processing, and calculate the spectral pattern. It was known that people could recognize colors by comparing them.

In such conventional devices, (1) large-capacity, high-speed large-scale computers are required for data processing, and (2) complex algorithms are required to detect and correct performance degradation of the light receiving sensor. (3) If this one computer malfunctions, color discrimination becomes completely impossible.

The purpose of the present invention is to be able to identify an infinite number of colors at high speed using a simple algorithm using multiple microcomputers and a small number of color receptors, and to identify colors without error even when the performance of color receptors deteriorates. It is an object of the present invention to provide a color identification device which can also process color identification of two-dimensional objects at high speed.

In the present invention, the three color receivers of the original three primary colors, blue, red, and green, detect only the colors corresponding to each receiver, and transmit those sensing signals to the identification processing device. , each processing device receives identification signals from the directly connected receiver and other receivers, thereby determining the ratio of the three primary colors identified by each color receiver, and based on this result, determines whether the object is covered or not. In this way, in the present invention, since the coverage is determined based on the ratio of the three primary colors, color determination will not become impossible even if the performance of each receiver deteriorates.

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows the overall configuration of an embodiment of a color identification device according to the present invention. Color receptors 1.2 and 3 are receptors for the three primary colors of back, red and green, respectively, and each receptor is connected to an identification processing device via interfaces 4 to 6 and through bus transmission lines 43 to 6bi. Connected to 7-9,
The processing results are transmitted to the color display device 11 via the bus transmission line 10.
Transmit to.

The blue septa 1 and the red septa 4 are bus transmission lines 4a and 5a.
The red septa 2 and the green septa 3 are connected to the identification processing device 7 via the bus transmission lines 5b and 68, and to the identification processing device 7 via the bus transmission paths 5c and 6b. 9, respectively.

FIG. 2 shows an example of the configuration of the identification processing device 7.
The processing device 71 receives the sensing signals from the blue septa 1 and the red septa 2 by opening and closing the interface 73 in constant synchronization based on the data total timer 72 sent from the bus transmission lines 4a and 5a. The data is sequentially taken in and stored in receiving buffers 74 and 75 corresponding to each transmission path 4a and 5a.

The processing device 71 processes these stored data according to an identification algorithm described later, and stores the results in a processing result buffer 76. The processing device 71 also transmits the data in the processing result buffer 76 to the color display device 11 via the interface 77 and the bus transmission line 10.
Transmit to. These series of processes are executed 111 times based on the timer 72. The identification processing devices 8 and 9 also have similar processing functions.

FIG. 3 shows an example of the internal configuration of the color display device 11. The processing device 111 processes the interface 1 based on all the data sent from the bus transmission line 1 and the timer 112.
13 is opened and closed, and stored in the reception buffer 114 corresponding to the transmission path 10. Processing device 111
processes according to a color discrimination algorithm to be described later, and stores the results in the processing result buffer 115. Further, based on the data stored in the processing device 114, color 1 of the object is displayed on the display device 116 according to a display algorithm described later.

FIG. 4 is a graph showing an example of the relationship between each type of dust detected by blue, red, and green sensors and wavelength.

FIG. 5 is a graph showing an example of the relationship between original intensity and wavelength based on the detected dust of the green septa and the red septa of FIG. 4.

FIG. 6 is a graph showing the relationship between the identification values identified by the identification processing devices 7 to 9 and the colors indicated by the strips, and the color display device 11 displays the colors based on this. For example, the discrimination value b/r by the discrimination processing device 7 takes a value between 0.1 and 0.5, and the discrimination value g/r by the processing device 9 takes a value between 2.1 and 2.
If the value is between 8 (however, b, r and g
are each blue.

Indicates red and green sensing dust. ) The color display device 11 is 1
The green color of area 5 is shown. In addition, in FIG. 6, the number of divisions is set to 72 in order to display colors, but in order to display more colors, the number of divisions may be increased.

Now, suppose that the source of a certain color corresponds to Nori Sebuta 1,2°3 in Figure 1. At that time, the blue septa 1, the red septa 2, and the green septa 3 show the detected dust J'+g' according to their respective characteristics shown in FIG. These sensing dust b+ rrg are
Via the interfaces 4-6, they are transmitted as sensing signals to the identification processing devices 7-9. The identification processing device 7 detects the sensing signals S and R respectively.
from the bus transmission line 48.5a. Further, the identification processing device 8.9 transmits the sensing signal r+g' from the red septa 2 and the green septa 3 to the bus transmission line 5b, respectively.

6a, 5c, and 6bi, respectively.

Each identification processing device 7, 8.9 detects these three dust ba
Based on rrg, color discrimination P7 e Pg pP
, are calculated as follows.

That is, the discrimination processing device 7 expresses the degree of discrimination P as the ratio of b to r, and in reality, it is expressed as the ratio of blue light to red light. The identification processing device 8 uses the identification degree Ps'i
i=, expressed as the sum of r and g, and actually expressed as the original strength. The identification processing device 9 has the identification degree pQ'fil"t
It is expressed as the ratio of g to r, and in practice as the original ratio of green to red light. As shown in Figure 4, among the three primary color receptors, the red receptor absorbs the widest range of wavelengths of light, so the ratio (P, , P,) can distinguish a wider range of colors than other envelopes.

P,,pg　,P,'r Expressed as follows.

P, knee p, = r + g P, = - As described above, each identification processing device identifies colors by taking the ratio of each color detected by the three primary color receptors, so even if the performance of the receptor deteriorates, If the performance deterioration is similar for all three receptors, colors can be correctly identified. For example, each receptor similarly has Δb, Δr,
Assuming that Δg has deteriorated, the sensitivity of each receptor is b=b+Δb r=r+Δr g=g+Δg. As a result, P? ＋p is reduced, and is almost unchanged from the value before deterioration.

However, what about the strength of the light? δ=(rff7)t
(ΔYfA7), and the sensitivity also decreases in proportion to the performance deterioration.

The respective discrimination degrees obtained based on the above discrimination method are transmitted to the color display device 11 via the bus transmission line 10.

The color display device 11 searches out the colors represented by the received discrimination degrees P7 and P9 from the color area shown in FIG. 6 based on the data, and displays the color corresponding to the area number. Also, the maximum light intensity is the sum of the maximum light sensitivity of the red septa and the maximum light sensitivity of the green septa shown in Figure 4,
The ratio of the value of the discrimination degree P8 to the maximum value is displayed as the intensity of the received color light. FIG. 5 is a diagram showing the relationship between light intensity and wavelength based on FIG. 4, with the intensity being the sum of red and green sensitivities as described above.

Next, a device for identifying colors on a two-dimensional plane will be described. FIG. 7 is a diagram in which a plane is divided and receptors 1, 2.3 are placed in each divided portion in order to identify two-dimensional colored light. FIG. 8 is a diagram in which they are arranged consecutively on a plane. Each receptor 1 (B) 2 (R)
The identification (9) processing device 7,8.9 connected to 3(G) receives sensing signals from the four-way receptors. Specifically, as shown in FIG. 9, the identification processing device 7 identifies the blue receptor 1-1.
It is connected to three red receptors 2-1, 1, 2-1, 2, 2-2, and 1, and receives sensing signals from these four directions. Further, the preprocessing display device 12, 13.14 connected to each identification processing device 7, 8.9 receives an identification signal from the identification processing device 7, 8.9, and transmits the signal as indicated by the dotted line in FIG. It is displayed as the color of the range P of the enclosed triangle. This is because the signals sensed by each of the three receptors are simultaneously sent in six directions, and are identified as colors in six areas around each receptor. Therefore, the portion of the receptor occupying each region must be equal. Therefore, the shape of the receptor is hexagonal. Furthermore, by forming the hexagonal shape, receptors of the same color are not lined up consecutively.

As described above, according to the present invention, by arranging color receptors on a plane and connecting a plurality of identical microcomputers to them, it is possible to easily generate two-dimensional colored light. By using a high-speed microcombinator, an identification device can be realized at a low cost. Even if the performance of the color receptor deteriorates, the identification process can be performed without any effect on the identification, making it possible to achieve high reliability of the system.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of an example of a color identification device according to the present invention;
2 is a diagram showing an example of the internal configuration of the identification processing device in FIG. 1, FIG. 3 is a diagram showing an example of the internal configuration of the color display device in FIG. 1, and FIG. 4 is a diagram showing blue and red. A graph showing the relationship between each type of dust detected by the green receptor and the wavelength, Fig. 5 is a graph showing the intensity of light and wavelength, and Fig. 6 shows the relationship between the identification value identified by each receptor and the color it indicates. The graph shown in Figure 7 is a diagram in which the plane is divided and receptors are placed in each divided part in order to identify colors on a two-dimensional plane, and Figure 8 is a diagram showing the two-dimensional receptors shown in Figure 7. FIG. 9, which is a diagram illustrating the three-dimensional overall structure of a two-dimensional surface color identification device, is a diagram in which the components are arranged consecutively on a plane. 1-3... Three primary color receptors, 7-9... Identification processing device, 11... Color display device. Agent Patent Attorney Toshiyuki Usuda ■ 1 Diagram Y 2 Diagram Y 3 Kakaya 4 Low Liquid Cho 5th Liquid Chorus 6 Blocker a 7 Diagram Whisper 8 Mouth'S 9 Diagram

Claims (1)

[Scope of Claims] 1. Three primary color receptors that sense the three primary colors of light, blue, green, and red, respectively, and sensing signals from two or more of the three primary color receptors are input, and these sensing signals are provided. 1. A color identification device comprising: a plurality of processing means for determining the ratio; and identification means for identifying colors based on the output of the processing means. 2. The color identification device according to claim 1, wherein the identification means includes display means for displaying the identified color. 3. The three primary color receptors have a hexagonal shape and are arranged on a two-dimensional plane so as to identify two-dimensional light. Color identification device.