Hyun Hwa Oh

Motion-blur-free Camera System Using Multi-exposed Images

In this paper, we present a motion-blur-free camera system using multi-exposed images. The proposed camera system captures three frames successively from the same scene at long-short-long exposure times. In the proposed system, the high-quality image is obtained by combining the shape information of the object in an under-exposed image captured at the short exposure time and the color information from two blurred images taken at the long exposure time. Simulation results show that the proposed multi-exposure camera system can provide a high-quality image without motion blur.

A new calibration method and tissue cancellation in dual energy mammography

Mammography is stil the major tool for screening and diagnostic examinations of early breast cancer detection. It gives opportunities for early detection of breast cancer. For early detection of breast cancer, the mass visuality of mammography is very important. Direct mapping is suggested through which the breast radiography relates to the reference phantom radiography by finding the closest intensity values between those radiography images at both energy. With the proposed method, we could enhance the visuality of mass lesions in breast. And the results show that the proposed method has good performance, showing the possibility of cancer detection mammography.