Sistema integrado de aquisição e processamento de imagens

Abstract

This work presents the design and implementation of a new integrated system for image acquisition and processing (SIAPI). The system is composed of a charge coupled device (CCD) image sensor, a low end DSP (Digital Signal Processor) to control the image sensor, a high end DSP to process the acquired images, a universal serial bus (USB) interface to connect the system to a microcomputer and a thermo-electric cooler device based on the Peltier effect which is meant to reduce the amount of thermal noise generated by the image sensor. All the functional parameters of the image sensor can be controlled through the system, and the images acquired can be processed in real time. To evaluate the functions of the system and to measure its performance, a prototype was built based on a DSK (DSP Starter Kit). Also, a computer program in C language was developed to communicate with the system. The response characteristics of the image sensor were evaluated under different conditions. It has been concluded that the system is completely functional and that it outperforms a high performance microcomputer when executing image processing algorithms.