Research on image clarity algorithm based on FPGA

DUAN Zheyi; LI Tianran; LI Shouye; YANG Zhirong; HU Maohai

doi:10.20193/j.ices2097-4191.2024.04.009

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Integrated Circuits and Embedded Systems ›› 2024, Vol. 24 ›› Issue (4) : 51-56. DOI: 10.20193/j.ices2097-4191.2024.04.009

Research Paper

Research on image clarity algorithm based on FPGA

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Abstract

In order to evaluate the real-time clarity of video images,a new image clarity algorithm is designed and implemented on Xilinx A-7 FPGA chip.Firstly,a state machine design OTSU algorithm is used to calculate the adaptive threshold of the image to separate edges.Secondly,parallel processing and pipeline implementation are applied to improve the computational clarity of the 4-direction Tenengrad gradient function.The experiment results indicate that the design can complete 640×480@30 fps evaluation of the clarity of video stream images in 66 ms,with a certain degree of sensitivity.

Key words

real-time evaluation of image clarity / FPGA / OTSU / xc7A35TFTG256

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DUAN Zheyi , LI Tianran , LI Shouye , et al . Research on image clarity algorithm based on FPGA[J]. Integrated Circuits and Embedded Systems. 2024, 24(4): 51-56 https://doi.org/10.20193/j.ices2097-4191.2024.04.009

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