The Study Of High-resolution X-ray Digital Radiography

High-resolution X-ray digital radiography used for electronic industry is urgent requirement of all small and medium-sized electronic industrial manufacturer. The aim of this dissertation is to develop the low cost real-time digital high-resolution X-ray inspecting technology and system.In this dissertation, first of all, the subject demands and international study status are introduced. The basic knowledge of X-ray detection and the theory of X-ray imaging are studied and summarized .The advantage and disadvantage of mature X-ray digital imaging system, the evaluating methods of radiography with film and mature digital radiography are analyzed and contrasted.To the question of demands of the subject, put forward the design of x-ray inspecting system used for electronic industry based on MCP X-ray image intensifier and made a detailed introduction to the system's process of developing. Author analyzed principle of design and overall planning of this system, build the systemic resolution mathematical model of this radiation imaging system, complete the specialized software of this X-ray inspector based on this system used for electronic industry. Some Influencing imaging quality factors of this digital radiography are analyzed from the theory to the experiment. Put forward the correction algorithms for the random noise in digital radiographic images of this system and the improvement of frame integral algorithm in the engineering. Developed the correction algorithms to compensate for this system's nonuniformity. Made the polynomial fitting algorithm based on least-mean-square method to correct the image data and given some examples of correction. The experiments had proved that low cost real-time digital high-resolution X-ray inspector used for electronic industry developed by author achieved the demands of subject. This digital radiography has some unique characteristics. Some shortages of study and works need for perfecting are indicated.