Platform histogram equalization realization method based on FPGA, and device thereof

Abstract

The invention discloses a platform histogram equalization realization method based on an FPGA, and d device thereof. When frames are effective, a histogram statistic module carries out histogram statistics on the data of a number t frame of image, an RAM reading-writing control module process a statistical histogram according to a set upper limit platform value, and the processed statistical histogram is input into the RAM; after the data of the number t frame of image is counted, a reading signal of the RAM is generated by an RAM reading control module, the reading signal is sent to the RAM through the RAM reading-writing control module, the read statistical histogram is sent to a histogram accumulation module, the histogram accumulation module accumulates the statistical histogram, and the accumulated statistical histogram is written into an SDRAM through an SDRAM arbitration control module; and when the data of a number (t+1) frame of image is effective, the above operation on the statistical histogram is repeated, and a platform histogram output module reads the accumulated histogram of the number t frame of image through the SDRAM, calculates the number (t+1) frame of image after equalization and outputs the image. According to the invention, a large number of internal resources of the FPGA are saved, the power consumption of the FPGA is reduced, and the operation speed is improved.

Description

technical field [0001] The invention belongs to the field of infrared image processing, in particular to an FPGA-based platform histogram equalization method and device thereof. Background technique [0002] The original infrared images generally have the characteristics of large non-uniformity, low contrast, and poor resolution, which greatly reduces the imaging quality of infrared imaging systems in practical applications. [0003] Histogram equalization is the most widely used map in infrared imaging systems. Therefore, according to the characteristics of infrared images, many scholars at home and abroad have developed various infrared image processing algorithms to improve the imaging quality of images. like display technology. The grayscale mapping function of the histogram equalized image adopts the cumulative distribution function of the original image, and the pixel distribution of the image after histogram equalization approximately satisfies the balanced distribu...

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a method and device for implementing FPGA-based platform histogram equalization, which solves the problem of increased FPGA power consumption, reduced operating speed, and inability to implant more because a large amount of image data occupies FPGA internal resources. Algorithms, improving system functions and other issues, optimizing the implementation method of the platform histogram, reducing the occupancy rate of FPGA internal resources, reducing system power consumption, and improving the operating speed

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