【摘要】 以提高图像质量为目的,对平板探测器数字成像系统进行全面分析,探讨其成像质量的影响因素,认为几何结构和噪声是影响成像质量的主要因素,并建立相应的数学模型.以此为基础,采用约束最小二乘方滤波器对降质后的图像进行滤波复原.仿真结果表明,所建立的数学模型是有效的,复原后图像的质量一定程度上得到了改善.更多还原

【Abstract】 In order to enhance the image quality,the factors that affect the imaging quality were discussed by analyzing comprehensively the digital imaging system of flat panel detector.It was believed that the geometrical structure and noises of the imaging system were main factors which affect the imaging quality,and the corresponding mathematical model was built up.On the basis of the model,quality-lowered image was recovered with the least squared constraint filter.The simulation results showed that the model was effective and the recovered image quality was well improved to some extent.更多还原