A real-time distorted image processing acceleration device

Abstract

The invention discloses a real-time distortion image processing acceleration device, which includes a coefficient DMA module, an original image DMA module, an R-row BUF control module, a G-row BUF control module, a B-row BUF control module, an R interpolation module, and a G interpolation module. , B interpolation module, this invention divides the original image mapping coordinates into blocks, and determines the range of extracting the original image data based on the coordinate sorting results of the points falling within each block, greatly reducing the filter window span and reducing the need for image data The buffer storage space requirements are met, and numbers will not be fetched repeatedly, thus avoiding waste of bandwidth. The present invention uses a table-building method to establish the corresponding relationship between the row number and the pointer in each block, thereby reducing the fetching and searching time.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a real-time distorted image processing acceleration device. Background technique [0002] In the VR all-in-one system, the image transmitted to the display needs to be decoded from the normal shape ( figure 1 shown in the left figure in ) is distorted into a distorted shape ( figure 1 shown in the right figure in ), while when the distorted shape ( figure 2 As shown in the left figure in ) when it is displayed through the lens, due to the optical distortion effect of the lens, it is finally displayed as a normal shape ( figure 2 shown in the figure on the right). The distorted image processing function is usually completed by the GPU, that is, in non-real-time display mode. The anti-distortion transformation of each frame of image will go through GPU reading one frame of image in DRAM > writing back to DRAM for one frame of image > display module reading one fram...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a real-time distorted image processing acceleration device in view of the deficiencies of the prior art, which overcomes the waste of system bandwidth caused by repeated reading and writing of DRAM by using a non-real-time display mode for the distorted image processing function of the prior art Bugs and the bug that the filter window span is too large when using the live view mode

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