A non-photorealistic-based rendering method of the spectral art style

A non-realistic, stylized rendering technology, applied in 2D image generation, image data processing, instruments, etc., can solve problems such as no public reports

Inactive Publication Date: 2016-11-02
YUNNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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  • A non-photorealistic-based rendering method of the spectral art style
  • A non-photorealistic-based rendering method of the spectral art style
  • A non-photorealistic-based rendering method of the spectral art style

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with accompanying drawing:

[0032] Such as figure 1 Shown: the present invention comprises the following steps:

[0033] (1) Input image decolorization: Convert the input image Input(x,y) to grayscale image Gray(x,y):

[0034] Gray(x,y)=0.299×Input R (x,y)+0.587×Input G (x,y)+0.114×Input B (x,y);

[0035] Where: Input R (x,y), Input G (x,y), Input B (x, y) represents the red, green and blue three-channel value of the input image Input(x, y), and (x, y) represents a certain pixel position in the input image and the grayscale image;

[0036] (2) Input image digital matting: use Poisson digital matting method for grayscale image Gray(x,y) to perform image digital matting, extract the subject in the grayscale image, and obtain the foreground image Fore(x,y) :

[0037] Fore ( x , y ) = ...

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Abstract

The invention discloses a non-realistic spectral art style drawing method, which converts an input static two-dimensional image into a grayscale image, and uses a Poisson digital matting method for image segmentation to extract the grayscale image The main body; use the method of threshold segmentation to obtain the black and white two-tone image, and use the filtering method to filter and smooth the black and white two-tone image; delete the white area and retain the pixels in the black area to generate the final foreground image; select an image with a colored texture as a texture sample, and use a texture synthesis method to synthesize the final background image; finally fuse the foreground image and the background image to obtain the final colored spectrum art effect image; the advantages of the present invention are: more It is in line with people's aesthetics, has a wide range of applications, fast processing speed, and good flexibility. It is a useful supplement for non-realistic simulation of different artistic effects.

Description

technical field [0001] The invention relates to a computer graphics processing method, in particular to a non-realistic-based spectral art style drawing method. Background technique [0002] Non-photorealistic rendering (NPR: Non Photorealistic Rendering) is based on human perception, combines artistic painting rules and scientific technical methods, and uses computers to generate graphics with hand-painted styles such as cartoons, oil paintings, and watercolors, mainly to express graphics It plays a more and more important role in the simulation of natural artistic style, the enhancement of image information, the generation of animation, the artistic expression of data, and the fields of medicine, architecture, and education. more important role. In addition, NPR adapts to image content, ignores minor details, and effectively attracts users' attention to key or important parts; it can save a lot of manpower, material resources and time to complete the animation production ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T11/00G06T7/00G06T5/00
Inventor 钱文华徐丹官铮
Owner YUNNAN UNIV
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