15 May 2001 Defects correction for digital dental x-ray sensors
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Abstract
As medical imaging is adapting to the digital technology, solid imaging sensors are replacing the classical films in dental application. CCD is one of the typical image senors in this are. In the oral imaging, however, the size of image sensors should be large because there is not enough space for optical path of lens inside the mouth. The unavoidable defects are usually occurred in the large format CCD sensor. Practically it is not possible to get the defect free sensor because its cost is rapidly increasing to reduce the defects. In this paper we will present an efficient strategy to handle these defects. As the lighting is highly controllable differently from the common cameras, the controlled illumination is used to create uniform images with various levels. The local statistics in each controlled image are investigated to find defected areas. All the defected regions of each image are accumulated forming image-like representation. The defected regions are concealed with their neighbors by linear interpolation.
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Jong Dae Kim, Jong Dae Kim, Seo-Gyoo Kim, Seo-Gyoo Kim, Jongwon Kim, Jongwon Kim, } "Defects correction for digital dental x-ray sensors", Proc. SPIE 4306, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications II, (15 May 2001); doi: 10.1117/12.426965; https://doi.org/10.1117/12.426965
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