High Precision Edge Detecting Algorithm and Realization of Linear CCD Based on FPGA

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Provided by: AICIT
Topic: Hardware
Format: PDF
In order to improve the precision and speed of the linear CCD edge detecting system, in this paper, the authors proposed a new digital system which was used to detect the sub-pixel edge of the picture based on FPGA. Firstly, the CCD signal had been filtered by average filter before it entered the edge detecting system; secondly, the pixel edge can be detected by the algorithm that was used to detect the edge of the picture automatically, because the grads of grey scale breaks at the edge of the picture; lastly, cubic polynomials algorithm was used to detect the sub-pixel edge of picture.
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