| With the continuous improvement and rapid development of the computer high-performanceprocessor，mass storage and image processing technology. Ray digital imaging detectiontechnology is the research direction of X-ray detection at present, with the high efficiency, lowcost, exchangeable and storage convenient of digital image etc. this lesson topic takes X-Raydetection image as research object, and studies the system for the pretreatment and managementof digital image, and develops the software module, base on the X-Ray detection principle, digitalimage processing technology and database technology theory.In the image pretreatment part, firstly, the paper analyses the common noise type andcharacteristics in the x-ray detection system. Then, research de-noising algorithm by the multiframe mean filter and median filter, and improve the traditional median filter, reach to the effectanticipative, through the research and experiment of three algorithms. The low-contrast x-raydigital image is enhanced, with the grey level transformation, histogram equalization andhomographic filtering independently, and the experiment shows that the method achieves thedesired result.In database management part, using the relevant technical knowledge of the database, thepaper researches some contents, such as database design methodology, the method of databaseaccess by VC++, image retrieval technology, image access method, etc. and combines with theknowledge of digital image processing and database management systems, uses the propellantgrain X-ray detection Image as the research object, we studies a rays digital image processing anddatabase management system using Visual C++ 6.0 software and Microsoft SQL Server 2000database. The system realizes some function, such as the ray image preprocessing, the imageoperation of recorded, deleted and classification query, etc.Key words：X-ray detection，Image enhancement，edge detection，Mathematical morphology，Database management system... |
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