Abstract
For the shortcomings of complex equipment, cumbersome operation and high cost when using CCD to detect criminal investigation material, an instrument of criminal investigation based on CIS (Contact Image Sensor) is designed. First, because of strong anti-interference and high sampling accuracy, the CIS is used to sample image information. Then, use Gabor algorithm for image filtering to meet the sampling image resolution of 1200 DPI. Finally, extract the physical evidence-related features Information to finish material detection of the criminal investigation (fingerprint matching, counterfeit identifying and covered character recognizing etc.).
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