闪光照相图像缺陷消除方法
Removal of defects in radiography image
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摘要: 介绍了一种检测闪光照相图像缺陷以及消除这些缺陷的方法。在闪光照相实验中，底片图像会出现一些小尺寸的缺陷影响了底片信息的精确提取。根据闪光照相实验中采用完全一样的多张底片接收的特点，提出了一种闪光照相多底片图像的缺陷消除方法。首先对这些底片图像进行精确配准，将这些图像进行简单平均以获得均值图像，利用均值图像与各底片图像的差值获得缺陷图像，然后根据缺陷图像的特点对缺陷进行分割并判断各缺陷的归属。最后根据均值图像与缺陷图像以及缺陷分割与判断结果获得修补后的底片图像。实验结果证明该方法可以有效地消除多底片图像中的各类缺陷。Abstract: Defects on radiography images limit the measurement accuracy. Based on the character of multiple films of radiography, a method of defects removal was obtained. First,the original images was accurately registered, then an averaged image was obtained by these registered images, the defect image was obtained from the difference of the original image and the averaged image. The defects on the defect image was partitioned and posited by FCM. At last, the original image was restored by the averaged image, the defect images and the classification of defects. The simulative results confirm the method.
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Key words:
- radiography /
- image process /
- image inpainting /
- defect
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