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A comic-style non-realistic rendering method and device

A non-realistic rendering and style technology, applied in the field of image processing, can solve the problems of too many noise points, outlines, inaccurate edge extraction, etc., and achieve the effect of less noise points and clear outlines

Inactive Publication Date: 2017-05-17
深圳市云宙多媒体技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to propose a non-realistic rendering method in comic style, aiming to solve the problem that the prior art comic style method will generate too many noise points when processing many images; the extraction of edges is inaccurate, resulting in excessive Outline problem

Method used

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  • A comic-style non-realistic rendering method and device
  • A comic-style non-realistic rendering method and device
  • A comic-style non-realistic rendering method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0048] figure 1 It is a flow chart of a comic-style non-realistic rendering method in a preferred embodiment of the present invention; the method includes the following steps:

[0049] S101, acquire image A,

[0050] S102, performing grayscale processing on image A to obtain image a;

[0051] Specifically:

[0052] a(i,j)=0.299*A(i,j) R +0.587*A(i,j) G +0.114*A(i,j) B ;

[0053] Among them: divide the image into rows and columns according to pixels, i is the i-th row of each image; j is the j-th column of each image; A(i,j) R is the red component value of the pixel (i,j) of image A, A(i,j) G is the green component value of the pixel (i,j) of image A, A(i,j) B is the (i, j) point pixel blue component value of image A; a(i, j) is the (i, j) point pixel value of image a;

[0054] S103, performing multi-threshold processing on the image a to obtain an image c 1 ;

[0055] If: a(i,j)>T 2 , then C 1 (i,j)=α

[0056] If: T 1 1 (i,j)=β

[0057] If: a(i,j)≤T 1 , then C...

Embodiment 2

[0077] figure 2 It is a flow chart of a comic-style non-realistic rendering method in a preferred embodiment of the present invention; compared with Embodiment 1, the method of this embodiment of the present invention adds a step "preprocessing image a to obtain image b" after step S102, at this time Step S103 and step S104 in the first embodiment both process the image b, and all the relevant variables corresponding to a in steps S103-105 are replaced with relevant variables corresponding to b.

[0078] details as follows:

[0079] S201, acquire image A;

[0080] S202, performing grayscale processing on image A to obtain image a;

[0081] Specifically:

[0082] a(i,j)=0.299*A(i,j) R +0.587*A(i,j) G +0.114*A(i,j) B ;

[0083] Among them: divide the image into rows and columns according to pixels, i is the i-th row of each image; j is the j-th column of each image; A(i,j) R is the red component value of the pixel (i,j) of image A, A(i,j) G is the green component value...

Embodiment 3

[0107] image 3 It is a structural diagram of a comic-style non-realistic rendering device in a preferred embodiment of the present invention, and the device includes:

[0108] Image acquisition module, used to acquire image A;

[0109] A grayscale processing module, configured to perform grayscale processing on image A to obtain image a;

[0110] Specifically:

[0111] a(i,j)=0.299*A(i,j) R +0.587*A(i,j) G +0.114*A(i,j) B ;

[0112] Among them: divide the image into rows and columns according to pixels, i is the i-th row of each image; j is the j-th column of each image; A(i,j) R is the red component value of the pixel (i,j) of image A, A(i,j) G is the green component value of the pixel (i,j) of image A, A(i,j) B is the (i, j) point pixel blue component value of image A; a(i, j) is the (i, j) point pixel value of image a;

[0113] A multi-threshold processing module, configured to perform multi-threshold processing on the image a to obtain an image c 1 ;

[0114] I...

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Abstract

The invention discloses a cartoon style non-realistic rendering method and a device. The method comprises that edge crispening, de-noising and threshold gray scale division are performed on images whose gray scale is processed; and then the images processed by edge crispening, de-noising and multi-threshold processing are combined so that a cartoon style picture is obtained. The obtained cartoon style is close to that of a manual cartoon and less in miscellaneous point, clear in edge crispening and rarely in surplus.

Description

technical field [0001] The present invention relates to the field of image processing, in particular to a comic-style unrealistic rendering method and device. Background technique [0002] Non-photorealistic rendering is a new research field combining computer technology and painting art. Different from traditional realistic graphics rendering, non-photorealistic graphics rendering does not seek to generate images similar to photos, but expresses rendering by omitting details irrelevant to graphics, simplifying the shape of objects, and even exposing hidden details the intention of the author. The core of its algorithm is to add random factors to the regular pattern, so as to produce the effect of hand-drawing. [0003] The traditional manga style method will produce too many noise points when processing many images; the extraction of edges is not accurate, resulting in too many outlines; it cannot process pictures with too concentrated grayscale. Contents of the inventi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T11/00
Inventor 秦文礼
Owner 深圳市云宙多媒体技术有限公司
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