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Ishihara test board generation method and system based on Monte Carlo algorithm

A technology for generating systems and test boards, which is applied in the field of image processing, can solve the problems of time-consuming and labor-intensive, single source, etc., and achieve the effect of enriching content diversity

Pending Publication Date: 2021-09-07
YUNNAN UNIV
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  • Application Information

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Problems solved by technology

However, the current traditional Ishihara test boards are all manually drawn, which is time-consuming and labor-intensive, and the source is single

Method used

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  • Ishihara test board generation method and system based on Monte Carlo algorithm
  • Ishihara test board generation method and system based on Monte Carlo algorithm
  • Ishihara test board generation method and system based on Monte Carlo algorithm

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specific Embodiment

[0125] Such as Figure 4 Shown is an example diagram of an Ishihara test board generated by the above algorithm. Figure 4 (a) shows the original test board, Figure 4 (b) shows the 'diamond' generated using the original test board, Figure 4 (d) Shown is the unfinished Ishihara test board, with a rhombus in the center, which cannot be distinguished from the background before it is filled. Figure 4 (c)(e)(f) are other examples of generated test boards.

[0126] Such as Figure 5 Shown is an example plot of a red-blind test panel generated by the above algorithm. Figure 5 (a) Shown are 3 protanopia test panels with a prominent target of the letter 'S' in each image, and the color of the content pattern and the background pattern of the three Ishihara test panels are all different. Figure 5 (b) shows the use of a computational model to simulate the color perception of patients with color vision deficiency. People with normal vision can easily recognize the letter 'S' in ...

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Abstract

The invention discloses an Ishihara test board generation method and system based on a Monte Carlo algorithm. The method comprises the following steps: selecting contour coordinate points of a content pattern to obtain a plurality of content pattern boundaries; generating a large circle of which the radius is a set value, wherein the content pattern is in the large circle; randomly filling the large circle with small circles meeting multiple groups of constraint conditions, wherein the radius of the small circle is reduced by the radius of the large circle according to the proportion; judging whether each small circle passes through each content graph boundary or not; if so, removing; if not, reserving to obtain a plurality of effective circles; determining an area to which each effective circle belongs through a traversal number algorithm; and according to a CIE94 chromatic aberration formula, carrying out color selection based on a color blindness confusion line, and carrying out color filling on the area to which each effective circle belongs to generate the Ishihara test board. By means of the method, the Ishihara test board effect can be rapidly and effectively reproduced.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and system for generating an Ishihara test board based on a Monte Carlo algorithm. Background technique [0002] Color perception is common to most people, and they can perceive the frequencies of light reflected off surfaces. Human color vision is based on three phytochromes, which represent a color in three dimensions. There are three kinds of cone cells in the human eyeball, and each cone cell has a unique spectral sensitivity to light of different wavelengths, which means that the cone cells are stimulated by light of different wavelengths. The human visual system compares the different cone cells The relative stimulus to perceive color is determined by the power contained in each wavelength. Normal trichromacy occurs because the retina contains three types of cone pigment neurons, the L, M, and S cones, and light of specific wavelength ranges stimulates o...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T7/194G06T7/62G06T7/90
CPCG06T7/0002G06T7/194G06T7/62G06T7/90G06T2207/10024
Inventor 王泽远余映
Owner YUNNAN UNIV
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