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Image non-photorealistic highlight water color rendering method and apparatus
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A non-realistic, image technology, applied in the field of image rendering, to achieve the effect of strong edge layering, real-time realization, and strong artistic sense
Inactive Publication Date: 2015-11-25
深圳市云宙多媒体技术有限公司
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[0004] The purpose of the embodiments of the present invention is to propose a method to solve the problems of the prior art
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Embodiment 1
[0047] figure 1 It is a flow chart of an image non-realistic highlight watercolor rendering method in a preferred embodiment of the present invention; the method includes the following steps:
[0048] Step1. Obtain image A to be processed, perform pixel histogramequalization processing and normalization processing on image A, and obtain image C;
[0049] Step 2. Perform grayscale processing on image C to obtain image a;
[0050] The grayscale processing method is as follows:
[0051] a(i,j)=0.299*C(i,j) R +0.587*C(i,j) G +0.114*C(i,j) B ;
[0052] Among them: i is the i-th row of each image; j is the j-th column of each image; C(i,j) R is the red component value of the pixel (i,j) of image C, C(i,j) G is the green component value of the pixel (i,j) of image C, C(i,j) B is the (i, j) point pixel blue component value of image C; a(i, j) is the (i, j) point pixel value of image a;
[0053] Step3, performing Gaussian blur on the image a to obtain image b;
[0054] The s...
Embodiment 2
[0071] figure 2 It is a structural diagram of an image non-realistic high-gloss watercolor rendering device in a preferred embodiment of the present invention; the device includes:
[0072] An image acquisition module, configured to acquire the image A to be processed;
[0073] An image pixel histogramequalization processing module, which is used to perform pixel histogram equalization processing on the image A;
[0074] The normalization processing module is used to perform normalization processing on the image A after the pixel histogram equalization processing to obtain the image C;
[0075] A grayscale processing module, configured to perform grayscale processing on the image C to obtain the image a;
[0076] The grayscale processing method is as follows:
[0077] a(i,j)=0.299*C(i,j) R +0.587*C(i,j) G +0.114*C(i,j) B ;
[0078] Among them: i is the i-th row of each image; j is the j-th column of each image; C(i,j) R is the red component value of the pixel (i,j) o...
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Abstract
The present invention discloses an image non-photorealistic highlight water color rendering method and apparatus. According to the method disclosed by the present invention, by firstly carrying out equalizationprocessing on an input image, light in the image is balanced; normalization processing is carried out to bring convenience to subsequent calculation; and then line collection processing is carried out on the original color image by a gray-scale map of the image so as to extract a necessary edge profile, the extracted edge and the original color image are merged into a new image and finally, enhancement processing is carried out on the new image and the color of the image is corrected. According to the method disclosed by the present invention, the necessary edge can be enhanced, the image is excellent in edge layering, is insensitive to light influence and has a good artistic feeling, no excessive color particles exist, the highlight rendering method is provided for the art and the non-photorealistic rendering processing, such as filtering processing and the like, and video real-time implementation can be met.
Description
technical field [0001] The invention relates to the technical field of image rendering, in particular to a non-realistic highlight watercolor rendering method and device. Background technique [0002] Specular watercolor rendering is a non-photorealistic graphics rendering. Drawing from an objective point of view, stylizing existing graphic images with people's subjective imagination, it pursues better artistic effects, for the purpose of simulating approximation, changes the level of detail according to the attention of the observer, and selectively highlights The artistic beauty of natural phenomena. [0003] The traditional watercolor style method handles the situation where the edge outline of the image is not clear enough, or even lost, and the extraction of the color of the dye is not accurate, resulting in too many particles; in many cases, it produces an effect that looks like animation. Contents of the invention [0004] The purpose of the embodiments of the pre...
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