Three-dimensional image matching system based on mixing and parallel
A technology for stereoscopic images and matching costs, applied in the field of image processing, can solve the problems of occupying storage resources and the difficulty of on-chip image processing systems, so as to solve resource constraints, balance the demand for logical resources and storage resources, and avoid large-capacity resource storage. Effect
Inactive Publication Date: 2013-09-04
TSINGHUA UNIV
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Take the image size of 1280*1024, the matching block size of 25*25, and the disparity range of 0 to 255 as an example. At this time, the bit width of U is 13. If the processing speed reaches 30fps, the bandwidth requirement is 30*1024*1280*256*13 =130Gb / s, such a high bandwidth is difficult to use off-chip storage resources, and only on-chip storage can be used. The overall required on-chip storage resource size is 1280*256*13=4.26Mb, which occupies most of the storage resources. Implementing a complete on-chip image processing system poses difficulties
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[0037] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, but not to be construed as a limitation of the present invention.
[0038] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for description purposes, and cannot be interpreted as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly a...
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The invention provides a three-dimensional image matching system based on mixing and parallel. The system comprises a receiving module, an analysis module, a computing module and a comparison module. The receiving module is used for receiving a three-dimensional image and storing the image in a buffer memory, wherein the three-dimensional image comprises a left view and a right view. The analysis module is used for carrying out analysis on the three-dimensional image to extract the pixel set of the left view and the pixel set of the right view of the three-dimensional image. The computing module is used for computing the predetermined quantity of pixels of the left view and the predetermined quantity of pixels of the right view and matching cost of a great amount of parallax respectively according to multiple pairs of pixel points of the pixel set of the left view and the pixel set of the right view. The comparison module is used for carrying out comparison on the matching cost of the parallax, and the parallax corresponding to the minimum matching cost is selected as the parallax of the three-dimensional image. According to the three-dimensional image matching system based on the mixing and the parallel, large capacity resource storage is avoided, and resource consumption is reduced through reuse in multiple directions, the requirements of logic resources and storage resources are made to be balanced, and the problem that high-definition image processing is limited by resources is solved.
Description
technical field [0001] The invention relates to the technical field of image processing, in particular to a hybrid parallel-based stereo image matching system. Background technique [0002] Stereo vision is one of the important contents of image processing, and binocular matching is a more traditional method in stereo vision. The main process of block matching is to calculate the difference of image blocks, that is, the matching cost. The basic calculation formula of the block matching algorithm is: [0003] C ( x , y , d ) = Σ i = - n n Σ j = - n n | L ( x + i ...
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IPC IPC(8): G06T15/00
Inventor 王文强单羿汪玉杨华中
Owner TSINGHUA UNIV