Journal ArticleDOI
A new image contrast enhancement technique based on a contrast discrimination model
TLDR
A mathematical model that follows a power law has been developed and comparisons between the proposed technique and both of the histogram equalization and histogram hyperbolization techniques have been made.About:
This article is published in CVGIP: Graphical Models and Image Processing.The article was published on 1992-03-01. It has received 27 citations till now. The article focuses on the topics: Adaptive histogram equalization & Histogram equalization.read more
Citations
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Journal ArticleDOI
A visibility matching tone reproduction operator for high dynamic range scenes
TL;DR: A tone reproduction operator is presented that preserves visibility in high dynamic range scenes and introduces a new histogram adjustment technique, based on the population of local adaptation luminances in a scene, that incorporates models for human contrast sensitivity, glare, spatial acuity, and color sensitivity.
Proceedings ArticleDOI
A visibility matching tone reproduction operator for high dynamic range scenes
TL;DR: A tone reproduction operator is presented that preserves visibility in high dynamic range scenes and introduces a new histogram adjustment technique, based on the population of local adaptation luminances in a scene, that incorporates models for human contrast sensitivity, glare, spatial acuity and color sensitivity.
Proceedings Article
High Dynamic Range Imaging.
TL;DR: This course outlines recent advances in high-dynamic-range imaging, from capture to display, that remove this restriction, thereby enabling images to represent the color gamut and dynamic range of the original scene rather than the limited subspace imposed by current monitor technology.
Patent
Automatic contrast enhancement
TL;DR: In this article, a method of automatic contrast correction comprises providing digital image data, representing the data in the form of a brightness histogram, determining a measure of central tendency for said histogram and adding a shift value to the measure of center tendency to provide an adjusted measure of centre tendency, using the both the determined and adjusted measures of central propensity to determine the exponent of a tone reproduction curve, and applying the tone reproduction curves to the brightness values of the image.
Journal ArticleDOI
Bas-Relief Generation Using Adaptive Histogram Equalization
TL;DR: An algorithm is presented to automatically generate bas-reliefs based on adaptive histogram equalization (AHE), starting from an input height field, and the results are comparable to and in some cases better than the best previously published methods.
References
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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
A power law for contrast discrimination
TL;DR: Comparison increment thresholds were measured as a function of the background contrast of suprathreshold sine wave gratings at 2 and 8 c/deg and Weber's Law does not hold for contrast discrimination under any of the conditions studied.
Journal ArticleDOI
Spatial frequency masking in human vision: binocular interactions.
TL;DR: At medium and high contrast levels, dichoptic masking was more effective in elevating contrast thresholds than monocular masking, and approached Weber's Law behavior.
Journal ArticleDOI
A Survey of Preprocessing and Feature Extraction Techniques for Radiographic Images
TL;DR: Several preprocessing techniques for enhancing selected features and removing irrelevant data are described and compared and a practical image pattern recognition problem is solved using some of the described techniques.
Journal ArticleDOI
Luminance discrimination of brief flashes under various conditions of adaptation.
T. N. Cornsweet,H. M. Pinsker +1 more
TL;DR: It is argued that luminance discrimination data to be presented here have been collected under conditions easier to interpret in terms of photochemical and neural processes, as well as signal detection theory.