Robust Contrast Enhancement for Digital Mammography

Wavelets for Contrast Enhancement of Digital Mammography One Dimensional Discrete Dyadic Wavelet Transform

Breast cancer currently accounts for 32% of cancer incidence and 18% of cancer mortality for women in the United States. There were 182,000 new cases of breast cancer in the United States in 1993 and 46,000 deaths. Five year survival rates are generally very high (93%) for breast cancer staged as being localized, falling to 72% for regional disease and only 18% for distant disease 1]. The early...

Contrast Enhancement Estimation for Digital Image Forensics

Inconsistency in contrast enhancement can be used to expose imagel forgeries. In this work, we describe a new method to estimate contrast enhancement from a single image. Our method takes advantage of the nature of contrast enhancement as a mapping between pixel values, and the distinct characteristics it introduces to the image pixel histogram. Our method recovers the original pixel histogram ...

Mathematical Morphology Approach for Enhancement Digital Mammography Images

Mammography is a branch of radiology which could benefit greatly from the assimilation of digital imaging technologies. Computerized enhancement techniques could be used to ensure optimum presentation of all digital clinical images. In this research, two enhancement algorithms are proposed that are based on the mathematical morphology theory. The first proposed algorithm deals with the contrast...

Contrast Enhancement in Mammography Imaging Including K Edge Filtering

A general X-ray tube has two electrodes, the cathode and the anode, with a high voltage applied between them. Electrons are generated at the cathode. After the electrons are emitted from the cathode they are accelerated by the high voltage toward the anode (positive) electrode. The high speed electrons hitting the anode material then generate invisible radiation i.e. X-rays. The energy spectrum...

Radiographic Contrast-Enhancement Masks in Digital Radiography