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Random sampling point-based diversified color table drawing method

A random sampling and color table technology, applied in the field of image processing, can solve problems such as single results, inability to guarantee mutual color visual distance, and large amount of calculations

Active Publication Date: 2017-04-26
杭州京威盛智能科技有限公司
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AI Technical Summary

Problems solved by technology

This requires a large amount of calculation, and the results obtained by the clustering method are relatively single, and the visual distance between colors cannot be guaranteed

Method used

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  • Random sampling point-based diversified color table drawing method
  • Random sampling point-based diversified color table drawing method
  • Random sampling point-based diversified color table drawing method

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with accompanying drawing.

[0021] The sphere space radius of the performance color space in the present embodiment is set as R=100, and the specific steps of the present embodiment are accordingly:

[0022] Step 1: Input the brightness value L, the color type n of the random color table, and the color visual distance E0 of the random color table to be obtained.

[0023] Step 2: Calculate the cutting circle radius r. Such as figure 1 Shown:

[0024] Calculate the xL value from the input L:

[0025]

[0026] Compute the radius of the cut circle: .

[0027] Step 3: Set the point array D, which is used to save the selected color points that meet the restriction conditions.

[0028] Step 4: Select the initial point Xo and store it in the fixed-point array D (points can be predefined or randomly selected).

[0029] Step 5: Selection of alternative points. Such as figure 2 , image 3 Shown: ...

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Abstract

The present invention discloses a random sampling point-based diversified color table drawing method. According to the random sampling point-based diversified color table drawing method, under a certain limited condition, sampling points are obtained randomly according to an inputted L value and a color classification number n, so that a color table can be generated; and it can be ensured that the generated color table has a certain discrimination through limiting Euclidean distance values and calculating a maximum sampling number based on a characteristic that the same Euclidean distances of color points in a CIELAB color space render the same visual distances for people. With the random sampling point-based diversified color table drawing method of the invention adopted, the diversity of the color table can be realized, and certain visual distances exist between colors.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to a color table drawing method based on random sampling points. Background technique [0002] As one of the most important features of an image, color gives people the most intuitive feeling. It plays a pivotal role in image processing, machine vision, computer visualization and other fields. With the development of multimedia technology, the color tone of the image has developed from a single-tone image to diversified according to the needs of different people and different application scenarios. In the process of software design, designers often design different color theme schemes for different object groups, such as local gold theme, rose red theme, etc. [0003] Many studies have shown that choosing several main base colors can well express the tone of the overall image. On the contrary, to form a color theme of different shades, it is particularly impo...

Claims

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Application Information

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IPC IPC(8): G06T11/20G06T11/00
CPCG06T11/001G06T11/206
Inventor 王勋林贤煊杨柏林
Owner 杭州京威盛智能科技有限公司
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