Paper Info
Title
Color Enhancement in Endoscopic Images Using Adaptive Sigmoid Function and Space Variant Color Reproduction
Abstract
Modern endoscopes play an important role in diagnosing various gastrointestinal (GI) tract related diseases. The improved visual quality of endoscopic images can provide better diagnosis. This paper presents an efficient color image enhancement method for endoscopic images. It is achieved in two stages: image enhancement at gray level followed by space variant chrominance mapping color reproduction. Image enhancement is achieved by performing adaptive sigmoid function and uniform distribution of sigmoid pixels. Secondly, a space variant chrominance mapping color reproduction is used to generate new chrominance components. The proposed method is used on low contrast color white light images (WLI) to enhance and highlight the vascular and mucosa structures of the GI tract. The method is also used to colorize grayscale narrow band images (NBI) and video frames. The focus value and color enhancement factor show that the enhancement level in the processed image is greatly increased compared to the original endoscopic image. The overall contrast level of the processed image is higher than the original image. The color similarity test has proved that the proposed method does not add any additional color which is not present in the original image. The algorithm has low complexity with an execution speed faster than other related methods.
Year
DOI
Venue
2015
10.1155/2015/607407
COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE
Field
DocType
Volume
Computer vision,Color histogram,Computer science,Chrominance,Color depth,Color balance,Artificial intelligence,Pixel,Grayscale,Color quantization,Color image
Journal
2015
ISSN
Citations 
PageRank 
1748-670X
7
0.55
References 
Authors
10
2
Name
Order
Citations
PageRank
Mohammad Shamim Imtiaz1112.17
Khan A. Wahid232738.08