Device for real-time image statistics with histogram and method for implementing same

Abstract

The invention relates to a device for real-time image statistics with a histogram and a method for implementing the same. The device comprises a video decoding unit, a programmable logic gate array, aprogram storage, a clock management unit, a resetting management unit and a power supply management unit, wherein the video decoding unit receives, filters, amplifies and digitalizes an original image signal to generate video data; the programmable logic gate array receives video data output by the video decoding unit and performs the statistics of the video data with the histogram; the program storage stores the application programs of the programmable logic gate array; the clock management unit provides required clocks for the programmable logic gate array and the video decoding unit; the resetting management unit provides a resetting signal for the programmable logic gate array; and the power supply management unit provides required power supply for the programmable logic gate array and units. The method comprises that: the video decoding unit receives, filters, amplifies and digitalizes the original image signal to generate the video data; and the programmable logic gate array performs the statistics of the video data with the histogram to obtain a result. The device and the method have the advantages of quickness, high integration level, low cost, and the like.

Description

technical field [0001] The invention relates to an image processing technology, in particular to an image real-time histogram statistics device and its realization method. Background technique [0002] In real-time image processing, histogram statistics is an important part of image preprocessing, how to quickly and effectively perform histogram statistics is often the premise of subsequent image processing. The histogram statistics of images is based on the processing method of pixel points. At present, there are roughly two methods of implementation: [0003] (1) Implemented by software: traverse the entire image data, count the number of pixels belonging to each gray level and store them in the array C[i], where the range of i is [0, 2 N -1], C[i] is the number of pixels whose gray level is i, and N is the number of digits of the original video signal after digitization. This method needs to occupy a certain amount of on-chip register resources, and it takes time to mak...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the existing image processing technology, such as long time-consuming, reduced reliability, difficulty in debugging and subsequent circuit improvement and upgrading, the technical problem to be solved by the present invention is to provide a low-cost Cost-effective and highly flexible image real-time histogram statistical device and its implementation method

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