Enhancement of Low-Contrast Curvilinear Features in Imagery

Enhancement of Target Contrast in Polarimetric Imagery Using Image Fusion

Motion Measurements in Low-contrast X-ray Imagery 1

1 This report has been accepted in shorter form to MICCAI '98. Abstract Measuring motion in medical imagery becomes more and more important, in particular for object tracking, image registration, and local displacement measurements. Often, the requirements on the measurement precision are high compared to the image quality. Especially in megavoltage X-ray images (portal images), which are used ...

Motion Measurements in Low-Contrast X-ray Imagery

Measuring motion in medical imagery becomes more and more important, in particular for object tracking, image registration, and local displacement measurements. Often, the requirements on the measurement precision are high compared to the image quality. Especially in megavoltage X-ray images (portal images), which are used to check the position of patients in high precision radiotherapy, render...

Low-Backscatter Ocean Features in Synthetic Aperture Radar Imagery

any ocean surface signatures in synthetic aperture radar (SAR) imagery are characterized by relatively low normalized radar cross section values. Distinguishing among these signatures objectively can be very difficult, especially with only the singleband and single-polarization SAR imagery available from the European Remote Sensing satellites and the Canadian Radarsat-1. Nevertheless, distincti...

Contrast Enhancement of Mammograms for Rapid Detection of Microcalcification Clusters

Introduction Breast cancer is one of the most common types of cancer among women.  Early detection of breast cancer is the key to reducing the associated mortality rate. The presence of microcalcifications clusters (MCCs) is one of the earliest signs of breast cancer. Due to poor imaging contrast of mammograms and noise contamination, radiologists may overlook some diagnostic signs, specially t...