Development Of Quality Detection System Of Color Printing Image

Recently, information industry has made a fast progress. As a median which carry on information, quality of print work have been more and more important both in print industry and human daily life. Especially in color printing quality, more attention should be pay for it. For this purpose, the article studying on the quality detection system of color printing image.Considering all item detected in color printing image, especially in elaborate color printing and defect on image which hard to be observed by human eyes, the article design a suit of test plate which can be used in quality detection of color printing image. Based on the plate, the studying establishing a quality detection system of print image based on image processing and instrument auto-detection. First, designing a print plate that contains all module what can detect any print parameter. Setting the module on the plate to detect any item. Second, building an integrated detection function. Using process executing and OLE(Object Linking and Embedding) technique to put instrument detection into fact. Completing the evaluating of tone,dot gain and color copy et al. This full detection function guarantee integrality and convenience of the whole system. Last, providing some interaction means based on digital image processing to recognize and analysis some module on printing control strip which be evaluated by image distortion or some intuitionistic defect on image surface.Through developing, the studying complete a whole detection system has most full function ultimately. It can detect and analysis all kinds of parameter in printing. To tone and dot copy, it can draw copy curve and compute print contrast by instrument test and recording data automaticly. To the register cross mark, it can orienting the cross center and the compute error accurately. To various image distortion, it can analysis the distortion defect and find the position of image defect by using assistant means of digital image processing. Developing result is that the whole system can satisfy the use requirement.