A method for instantly generating a color dot picture based on an incremental Voronoi sequence

A technique of sequence and stippling, applied in the field of instant generation of color stippling based on incremental Voronoi sequence, can solve the problems of low stippling quality, slow generation speed, high computational cost, etc., and achieve the effect of good blue noise characteristics

Pending Publication Date: 2019-06-28
YUNNAN UNIV
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AI Technical Summary

Problems solved by technology

In color stippling, since the dots of different primary colors belong to different sets, how to balance different sets of primary color dots is a computation

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  • A method for instantly generating a color dot picture based on an incremental Voronoi sequence
  • A method for instantly generating a color dot picture based on an incremental Voronoi sequence
  • A method for instantly generating a color dot picture based on an incremental Voronoi sequence

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Embodiment Construction

[0033] The implementation of the present invention will be described in detail below in conjunction with the examples and accompanying drawings, so as to fully understand and implement the implementation process of how the present invention uses technical means to solve technical problems and achieve technical effects.

[0034] Halftone technology refers to the quantization of a continuous tone image (such as a grayscale image and a color image) into a binary image or a color image with only a few colors with a small amount of color. Techniques that visually resemble the original image. The present invention takes a color image as an input, and uses halftone technology to quantize it into a stippling image composed of limited primary color points.

[0035] figure 1 The flow chart of the method for generating color stippling in real time based on incremental Voronoi sequence provided by the invention. Such as figure 1 As shown, the method for generating color stippling in re...

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Abstract

The method for instantly generating the color point picture based on the increment Voronoi sequence comprises the following steps of: randomly generating seed points in the sampling area, dividing thesampling area into a Voronoi graph according to the generated seed points, obtaining sampling points by using a farthest point strategy according to the current Voronoi graph, adding the sampling points into Voronoi division, and performing algorithm continuous iteration to obtain a required sampling sequence; Initializing parameters of an input image I and an output image O, determining the number n of sampling points, selecting n sampling points from the generated IVS to form a sequence S, and calculating the size A of a sampling area of a picture; Determining the radius of a pure color point corresponding to the sampling point; Dividing the sampling sequence into a plurality of subsets; For each sampling point in the subset, calculating the position of the sampling point on the image I; allowing an Each channel to adopt a threshold strategy to determine the color selected by each sampling point in the set; And outputting the finally generated image O. The color dot picture generation method is high in efficiency, and the color dot picture can be generated approximately in real time.

Description

technical field [0001] The technical field of computer graphics of the present invention, in particular, relates to a method for instantly generating color stippling based on incremental Voronoi sequences. Background technique [0002] Color stippling is a painting form in which pure color dots are placed evenly and randomly on the canvas, and a large number of small dots of primary colors are directly dotted on the screen to produce a painting consistent with the expected impression. Color point painting was first proposed by the French Impressionist painter Georges Seurat. It is a painting technique that uses the principle of color decomposition and combination in physics to use only pure color dots without the need to mix multiple complex colors. [0003] The basis of color stippling is color separation. In computer graphics, the common color spaces related to this are RGB color space, CMY color space and RYB color space. The RGB color space uses an additive color model ...

Claims

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Application Information

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IPC IPC(8): G06T11/00G06T7/90
Inventor 徐丹吴志超
Owner YUNNAN UNIV
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