Abstract
Abstract:Aiming at the safety problem of vehicle driving, this thesis studies a machine vision system that can be used by Intelligent Vehicle, which give alarm to the drive when the automobile is to drive from the driveway。 And present a design scheme about machine vision based on DSP。 Then the system is implemented with hardware including DSP video input processor etc。 Above all, this thesis proves the necessity of the research about machine vision of Intelligent Vehicle, the feasibility of the technology and its developing trends, and then introduces the several important elements of the system。 The system hardware take TI TMS320C5410 as the CPU be responsible for the picture processing, the video frequency decoding chip carry on images collect and conversion, the CPLD complete various connecter logic and cycle times to match。 The acquired images of the system are stored in the dual-RAM。 If one frame is finished, an interrupt signal will be sent to the DSP。 Then the DSP reads these data, processes them rapidly and calculates the distance。 If the distance is less than safety distance, the voice alarm unit will be started by the UART。 Interface programs of all section are introduced specially and some source codes are given,also the circuit diagram of the system hardware connectivity。
Keywords:Machine vision, images collect, DSP, video frequency decoding chip, voice alarm