Dissertation > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device

Print Image Detection Based on DM642

Author HanZhiQiang
Tutor HuangMengTao
School Xi'an University of Science and Technology
Course Control Theory and Control Engineering
Keywords TMS320DM642 Digital Image Processing Edge Detection Wavelet Transform
CLC TP391.41
Type Master's thesis
Year 2011
Downloads 49
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The printing industry in recent years has gradually become an important industry of the national economy , while in the printing process will inevitably produce print quality problems , and therefore must be detected in order to ensure the printing quality . In order to adapt to the rapid growth of the printing industry production lines , online machine vision - based detection technology is being applied to the print production , compared with traditional manual testing methods , its efficiency and accuracy has incomparable advantages , will become the prints detect an inevitable trend in the future of the industry . Learning home and abroad, the quality of prints online detection method based on the TI TMS320DM642 video processing chip as the core element of the system , select a suitable light source , camera , monitor , and other auxiliary equipment, constituting the printing production simulation platform . Prints common image defects using digital image processing techniques to extract edge features of print image edge detection , and then will be detected prints edge of the edges of the image and the template differential comparator of print shape defects detection . Comparative analysis of the algorithm of the space domain classic edge detection and wavelet transform edge detection algorithm , to select wavelet transform as edge detection algorithm . The final design of the detection process of the system , including templates, template matching, detection algorithms and results output RF5 framework of parallel multi-task , the completion of the system software design . Topic design prints image detection system can be realized on the prints of the image defect detection, and has high reliability, high integration , low power consumption advantages .

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