The Construction And Application Of The Embedded Image Processing Platform Based On DSP

In recent years, with the development of the image processing technology, more and more image information is applied to industrial automation and other areas. At the same time the rapid development of integrated circuits, makes single board computer processing power has been greatly improved. In particular, as represented by floating point DSP processor performance considerably improved. Embedded image processing systems have the potential to achieve. This paper proposes how to build an embedded image processing platform based on a TI's DSP chip TMS320DM642, and test the application in the bottle detection.This paper first describes the traditional characteristics of the image processing system, and analyze the characteristics of DSP chip and its system is proposed based on TI's TMS320DM642 chip embedded TMS320C64X series of image processing platform ideas to overcome the traditional PC-based model The image processing system weaknesses and improve the system's real-time performance, the maximum possible cost reduction, and strengthening the system of intellectual property protection.The system's main work includes image trigger, acquisition, processing, and image transmission into a single PCB board, with video interface chips and programmable logic arrays SAA7111A system front-end FPGA implementation of image acquisition and image output control, various types of commonly used DSP algorithms design, high-capacity system, FLASH and SDRAM so that the system can be applied to a variety of applications. The main work and innovation are the following sections.(1) Embedded system circuit is designed of each functional module. Throughout the system, including video capture part of the master chip DM642, and some peripheral circuits, memory cells in part (including FLASH, SDRAM, dual-port RAM, etc.), and the FPGA part. PHILIPS video interface used by the video chip SAA7111 A. The composite video, YC component analog video signals such as AD conversion to obtain digital image signals, to extract the synchronization and clock signals.(2) Embedded Systems PCB drawing. DM642 chip can run at 4800MIPS processing speed, the board is considered to be a high-frequency board. The drawing of the circuit board using PROTEL software, circuit board is made of six layers. Three signals, two power-layers, and a layer of power. Circuit, there are both digital circuit analog circuit, in order to work the stability of the circuit, the software does not use the automatic layout engine, instead of using the interactive routing mode, drawing a larger workload.(3) Embedded systems software development. Embedded System Software Development is a little different from the PC application development, with limited and small amount of program memory and data memory, the need for software to run on the speed and space optimization. This article lists some commonly used embedded process optimization.(4) System tested in the bottle detection. System test of the bottle test online image processing applications. First of all, do the procedure PC, transplantation, encapsulated into callable functions. Then through the CCS to debug DSP software development testing, sub-function to calculate the time occupied by image processing.Finally, the future of the system and the image processing system based on DSP development of summary and outlook.