| On the basis of study of TV guide system,analog image processing system is analysed,then a kind of digital image capturing,storing and processing system basing on DSP is put forward.In the paper,anolog image processing system is studied in detail,and that the working principle and how to implemented is analysed.On the basis of research into TV guide system's development,some image processing algorithms are studied corresponding to the characteristic of TV guide system's image.The signal is pretreated first and then the shape center coordinates of target are calculated.At last the coordinates are sent to the next controlling circuit.Its overall scheme is designed and the core chips are chosen,according to the system's technical requirements.The system's Schematic and PCB are designed and verified.The system is specialized in two aspects:one is real time and the other is the visible result.The output video can be reviewed on PC through PCI bus. |
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