ISSN: (Online) 2321 -4155
ISSN: (Print) 2320 -7000

JOURNAL OF INDIAN RESEARCH
VOLUME : 3, ISSUE : 1, January-March, 2015 (ISSN No. : 2321-4155)
 
STUDY OF VARIOUS IMAGE ENHANCEMENT TECHNIQUES : A CRITICAL REVIEW
Jasbir Singh Lamba & Prof Rajiv Kapoor
 
ABSTRACT
The aim of image enhancement is to improve the visual appearance and quality of an image. Many images like medical images, satellite images, aerial images, images obtained from digital camera and even real life photographs suffer from poor contrast and noise. It is necessary to enhance the contrast and remove the noise to increase image quality and to retrieve hidden information in the image. A digital image is an aggregate of large number of picture elements which represents the brightness of different pixels .Our aim is to study various techniques used for the enhancement of images. In this paper, we present an overview of image enhancement processing techniques in spatial domain and frequency domain. More specifically, we analyze different image processing techniques.
 
KEYWORD
Digital camera, Digital image, Frequency domain enhancement, Histogram Equalization, Image Enhancement, Spatial domain enhancement.
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