Design On Video Image Processing System Based On DSP

Digital signal processor, due to strong operation capability and its special soft andhard structure, has been widely used in image processing. After studying thetechnologies and theories of DSP deeply, this thesis designs a video image processingsystem based on DSP. The system is mainly based on the features that DSP is handy,cheap and stable.Nowadays image processing is often finished with image card, and its related workis often accomplished by computer, because the computer has high speed and largememory. But such computer image processing system is bulky, expensive and unstable.After analyzing the features of DSP carefully, this thesis presents the selected principlesof DSP. Through careful analysis and compare, we choose the DSP and other sectionsdesign, and then also introduce functions for each part.TMS320C6713 is a kind of high-powered floating-point digital signal processorproduced by TI, and it has powerful hard structure, soft system and high computingspeed of 225MHz, so we use it for the image acquisition, processing and display.Whereas the circumstances, the video image processing is presented that theTMS320C6713 works as the central processor to process the images, the video inputprocessor performs image acquisition and the CPLD is used for finishing scheduling.Then circuit schematics and print circuit boards are designed. The thesis expatiates onthe designed process of the system. The acquired images of the system are stored in theSDRAM. If one frame is finished, an interrupt signal will be sent to DSP. Then DSPreads these data and processes them rapidly.This thesis also explains interface programs of all sections and FLASHprogramming methods. Furthermore, some source codes are given and software tools ofDSP and CPLD are introduced in detail.At last, as an example, this thesis introduces that the system is applied to vehicle toavoid collision. We test the relative quality of the system, which obtains the desiredproperties.