Local Contrast Enhancement of X-ray Chest Image using Adaptive Algorithm

적응 알고리즘에 의한 흉부 방사선 영상의 국부 대조도 개선

Because the amount of radiation emerging from the thorax behind the lungs is often literally thousands of times that exiting behind the mediastinum, the dynamic range of X-ray chest image is very large. In order to solve the dynamic range problem, we propose a signal adaptive algorithm which enhances the local contrast and contracts the enhancement of quantum noise by local mean/valiance estimator.