Journal ArticleDOI
Contrast enhancement technique based on local detection of edges
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TLDR
The technique, derived from Gordon's algorithm, accounts for visual perception criteria, namely for contour detection, and the efficiency of the algorithm is compared to Gordon's and to the classical ones.Abstract:
A digital processing technique is proposed in order to enhance image contrast without significant noise enhancement. The technique, derived from Gordon's algorithm, accounts for visual perception criteria, namely for contour detection. The efficiency of our algorithm is compared to Gordon's and to the classical ones.read more
Citations
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Efficient Contrast Enhancement Using Adaptive Gamma Correction With Weighting Distribution
TL;DR: An automatic transformation technique that improves the brightness of dimmed images via the gamma correction and probability distribution of luminance pixels and uses temporal information regarding the differences between each frame to reduce computational complexity is presented.
Journal ArticleDOI
A Histogram Modification Framework and Its Application for Image Contrast Enhancement
TL;DR: A general framework based on histogram equalization for image contrast enhancement, and a low-complexity algorithm for contrast enhancement is presented, and its performance is demonstrated against a recently proposed method.
Journal ArticleDOI
Computer-aided detection and classification of microcalcifications in mammograms: a survey
TL;DR: The high correlation between the appearance of the microcalcification clusters and the diseases show that the CAD (computer aided diagnosis) systems for automated detection/classification of MCCs will be very useful and helpful for breast cancer control.
Journal ArticleDOI
Transform Coefficient Histogram-Based Image Enhancement Algorithms Using Contrast Entropy
TL;DR: The presented algorithms use the fact that the relationship between stimulus and perception is logarithmic and afford a marriage between enhancement qualities and computational efficiency to choose the best parameters and transform for each enhancement.
Journal ArticleDOI
Medial axis analysis of void structure in three-dimensional tomographic images of porous media
TL;DR: In this article, the medial axis is constructed during an iterative erosion procedure which replaces the image of the void structure with a smaller version obtained by eroding its surface layer of voxels.
References
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Journal ArticleDOI
Edge and Curve Detection for Visual Scene Analysis
Azriel Rosenfeld,M. Thurston +1 more
TL;DR: Simple sets of parallel operations are described which can be used to detect texture edges, "spots," and "streaks" in digitized pictures and it is shown that a composite output is constructed in which edges between differently textured regions are detected, and isolated objects are also detected, but the objects composing the textures are ignored.
Journal ArticleDOI
Image Enhancement by Histogram transformation
TL;DR: In this article, a number of simple and inexpensive enhancement techniques are suggested to make use of easily computed local context, features to aid in the reassignment of each point's gray level during histogram transfomation.
Journal ArticleDOI
Threshold selection based on a simple image statistic
TL;DR: A novel method based on image statistics which can be computed without histogramming the grey level values of the image is proposed, which is shown to be effective on a number of practical examples.
Journal ArticleDOI
Feature enhancement of film mammograms using fixed and adaptive neighborhoods.
TL;DR: An adaptive neighborhood feature enhancement technique that enhances visibility of objects and details in an image that should aid diagnosis of breast cancer without requiring additional x-ray dose such as for xeromammography.