EBCMOS相机盲元检测方法的研究  

Research on blind element detection method of EBCMOS camera

作　　者：蔡宁静 曾祥忠 王波 CAI Ningjing;ZENG Xiangzhong;WANG Bo(School of Electronic Engineering,Xi’an University of Posts&Telecommunications,Xi’an 710065,China;Xi’an Mid-River Photoelectric Technology Co.,Ltd.,Xi’an 710065,China;Xi’an North Electro-Optic Science&Technology Defense Co.,Ltd.,Xi’an 710065,China)

机构地区：[1]西安邮电大学电子工程学院,陕西西安710065 [2]西安中川光电科技有限公司,陕西西安710065 [3]西安北方光电科技防务有限公司,陕西西安710065

出　　处：《应用光学》2021年第1期137-142,共6页Journal of Applied Optics

基　　金：国家自然科学基金资助项目(41974130)。

摘　　要：电子轰击型(electron bombarded,EB)CMOS传感器工艺缺陷导致图像出现盲元,对图像质量影响较大。提出了一种基于多幅图像交叉计算的盲元检测新算法。对不同平均亮度的无目标图像,通过设置不同阈值,对图像进行二值化处理;再对多幅二值化图像按“亮点”位置进行交叉“相与”计算,生成盲元标记模板图,最后按盲元位置进行分类和取舍,得到最终盲元标记模板。最终盲元标记模板信息,为评价EBCMOS传感器品质和实际后续产品中盲元补偿提供可靠依据。Electron bombarded(EB)CMOS sensor process defects cause blind elements in the image,which has a greater impact on image quality.A new blind element detection algorithm based on cross calculation of multiple images was proposed.For untargeted images with different illumination brightness,by setting different thresholds,the image was binarized;then multiple binarized images were calculated according to the position of“bright spots”,and the blind element marking template image was generated.Finally,classification and selection were performed according to the position of blind element,and the final blind element mark template was obtained.The final blind element mark template information provided a reliable basis for evaluating the quality of EBCMOS sensor and the blind element compensation in actual follow-up products.

关 键 词：电子轰击型图像传感器 图像交叉计算 盲元标记模板图 评估与筛选 

分 类 号：TN29[电子电信—物理电子学]