Hardware acceleration structure adopting variable supporting area stereo matching algorithm

Abstract

The invention provides a hardware acceleration structure adopting a variable supporting area stereo matching algorithm. The variable supporting area stereo matching algorithm adopted by the invention can produce an appropriate matching area, and improve the matching precision remarkably. Aiming at solving the key problem that a large number of row cache hardware sources are needed to be occupied when the accumulation is carried out through adopting the variable supporting area stereo matching algorithm, the hardware acceleration structure adopts an accumulation sequence from the column direction to the row direction, and decreases the quantity of row caches required in processing parallel parallaxes in the supporting area, and saves the hardware storage resources through performing the caching output on pictures by the row caches. In addition, the structure adopts an integrogram thought, so that the accumulation operation is suitable for hardware implementation; data multiplex in the column direction and the row direction in accumulation is achieved through adopting the mixed parallel calculation way. Through the technological means, the high-precision real-time stereo matching of the high-definition pictures becomes reality.

Description

technical field [0001] The invention belongs to the technical field of computer electronics, and in particular relates to a hardware acceleration structure of a variable support area stereo matching algorithm. Background technique [0002] Stereo matching is one of the important contents of image processing, and binocular stereo matching is a more traditional method in stereo matching. Binocular stereo matching uses dual cameras with deviations in position to collect binocular images, finds the corresponding relationship between points in the binocular image, and uses the positional relationship of corresponding points to deduce the three-dimensional information of spatial points. [0003] The main purpose of the binocular stereo matching algorithm is to find the correspondence between the points in the binocular image. Before matching, binocular images are corrected to ensure that the corresponding points in the image are all in the same row. Due to the difference in came...

AI Technical Summary

Problems solved by technology

However, the variable support area stereo matching algorithm also poses new challenges to the hardware acceleration structure.

First, since the area is variable in two dimensions, it is not convenient in the process of hardware calculation, how to use the calculation results of adjacent pixels is a difficulty

Second, the variability in the column direction of the variable region makes the commonly used calculation method of sliding window in the row direction, that is, replace the earliest result with a new row of results in the column direction, becoming unusable

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