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Image guided filtering method and system

An image-guided and guided filtering technology, applied in the field of image processing, can solve the problems of low image-guided filtering efficiency and poor real-time performance.

Active Publication Date: 2017-08-29
GUANGDONG VTRON TECH CO LTD
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  • Application Information

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Problems solved by technology

[0003] Based on this, it is necessary to provide an image-guided filtering method and system for the problems of low image-guided filtering efficiency and poor real-time performance

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  • Image guided filtering method and system

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Embodiment Construction

[0021] Various embodiments of the image-guided filtering method and system of the present invention will be described in detail below.

[0022] like figure 1 As shown, it is a schematic flow chart of an embodiment of the image-guided filtering method of the present invention, including:

[0023] Step S101: Acquiring an input image and a guide image;

[0024] Guided filtering includes input images and guided images. The guide image can be a preset, or the input image itself.

[0025] Step S102: The first GPU kernel function for calculating the mean value of R, G, and B of the guide image, the second GPU kernel function for calculating the mean value of the input image pixels, the third GPU kernel function for calculating the guide filter function parameters, and the fourth GPU kernel function for calculating the output image The GPU kernel function is configured in the stream corresponding to the GPU;

[0026] Multiple streams are included in the GPU. Put different GPU ker...

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Abstract

An image-guided filtering method and system, wherein the method includes: obtaining an input image and a guide image; calculating the first GPU kernel function of the guide image R, G, and B mean value, calculating the second GPU kernel function of the input image pixel mean value, calculating The third GPU kernel function of the guide filter function parameter and the fourth GPU kernel function of calculating the output image are configured in the stream corresponding to the GPU; the guide image R, G, and B channel pixels of the corresponding stream are determined according to the pixel values ​​of each pixel of the guide image Average value; determine the average value of grayscale image pixels of the corresponding stream according to the pixel value of each pixel point of the grayscale image of the input image; determine according to the average value of the pixels of the three channels R, G, and B of the guide image and the average value of the grayscale image pixels Corresponding to each parameter of the guide filter function of the stream; determining the pixel value of the pixel point of the output image corresponding to the stream according to each parameter and the pixel value of the pixel point of the guide image. The invention improves filtering efficiency and real-time performance.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image-guided filtering method and system. Background technique [0002] As an efficient filtering method, image-guided filtering can be used in image denoising, image enhancement, image matching, and dehazing. Generally speaking, image-guided filtering is completed on a system with a PC as the architecture and a CPU as the computing core. Although compared with other filtering methods, the filtering image effect and speed are greatly improved, but because the CPU must concentrate on processing the guiding filtering function, especially for large-resolution images, the processing efficiency is slow and the real-time performance is poor. Contents of the invention [0003] Based on this, it is necessary to provide an image-guided filtering method and system for the problems of low image-guided filtering efficiency and poor real-time performance. [0004] An i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00
Inventor 杜焕勇
Owner GUANGDONG VTRON TECH CO LTD