Image acquiring and processing method based on FPGA (field programmable gate array) serving as control core

Abstract

The invention belongs to the field of image acquiring and processing, and particularly relates to an image acquiring and processing method based on an FPGA (field programmable gate array) serving as a control core. The method mainly includes building an image acquiring and processing SOPC (system on programmable chip) system comprising a Nios II soft-core processor module, a CMOS (complementary metal-oxide-semiconductor transistor) image sensing controller module, an FIFO (first in first out) controller module, an SDRAM (synchronous dynamic random access memory) controller module, a Canny edge detection algorithm module and a VGA (video graphic array) controller module. Firstly, images are acquired and then cached in the FIFO controller module; secondly, image data in the FIFO controller module are transmitted to an off-chip SDRAM chip by FPGA software and are stored in the off-chip SDRAM chip; thirdly, images in a memory are processed by means of an image processing algorithm, 'ping pong operation' is realized during processing, and the processing images are stored in the SDRAM again; and finally, the acquired edge images are displayed through a VGA interface after being processed.

Description

technical field [0001] The invention belongs to the field of image acquisition and processing, and specifically relates to an image acquisition and Canny edge detection processing method based on FPGA as the control core, which can conveniently collect target objects in real time and perform real-time edge detection processing. Background technique [0002] The image acquisition and processing system refers to the use of equipment to capture images and features of the objective world, and to process the captured images in real time as required, that is, to use equipment to realize the recognition of the objective world. With the development of image acquisition and processing technology, image acquisition and processing systems play an increasingly important role in many applications in many fields, such as remote monitoring, industrial control, medical equipment, image pattern recognition and other fields. [0003] Most of the image acquisition and processing systems adopt ...

AI Technical Summary

Problems solved by technology

[0029] In order to overcome the disadvantages of low execution efficiency of the existing image acquisition and edge detection scheme based on embedded technology, the present invention pro

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