Moving target detection circuit based on memristor and CMOS

Abstract

The invention discloses a moving target detection circuit based on a memristor and a CMOS. The moving target detection circuit comprises an adjacent frame difference comparison module and a signal processing module connected in order; the adjacent frame difference comparison module receives external video data and is used for difference comparison of high 4-bit numerical values on various pixel points between adjacent two frame images; the signal processing module is used for acquiring binary output corresponding to various pixel points after orderly performing current-voltage signal conversion, weighted sum and threshold comparison on the difference comparison result output by adjacent frame difference comparison module, thereby generating a white-black image for describing the moving target contour. The difference comparison is performed on the signal from an image sensor through a mixed structure array of the memristor and the CMOS. The detection circuit has the advantages of beingsimple in structure, small in volume, strong in extensibility and low in power consumption, the contour detection on the moving target can be accomplished on a hardware circuit, and the data processing pressure of the computer can be shared, thereby laying the foundation for realizing higher-order image processing task.

Description

technical field [0001] The invention belongs to the field of image processing, and more specifically relates to a moving target detection circuit based on memristor and CMOS. Background technique [0002] The moving target detection technology is a technology to detect the moving target according to the change of the physical position of the object relative to the surrounding environment. With the development of image processing technology, video-based moving target detection technology has been widely used in the fields of machine vision, intelligent monitoring, traffic monitoring, biological tissue motion analysis in medicine, and personnel tracking. Common methods for moving object detection based on video include background difference method, frame difference method and optical flow method, etc. These methods can be used alone or in combination to better identify moving objects. These algorithms mainly process the video data received by the computer through software pro...

AI Technical Summary

Problems solved by technology

The image storage array part of the circuit uses a pure memristive cross-array. This structure has a leakage current problem during read and write operations, so the data of different pixels cannot be read and written in parallel.

Affected by the leakage current of the pure memristive cross array, the moving target detection circuit can only operate pixel by pixel and cannot realize parallel operation of each pixel, resulting in slow data processing speed

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