Comparison of Histogram Equalization Techniques for Image Enhancement of Grayscale images of Dawn and Dusk
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2013, Vol 3, Issue 4
Abstract
Various enhancement schemes are used for enhancing an image which includes gray scale manipulation, filtering and Histogram Equalization (HE). Histogram equalization is one of the well known image enhancement became a popular technique for contrast enhancement because this method is simple and effective. In the latter case, preserving the input brightness of the image is required to avoid the generation of non-existing artifacts in the output image. Although these methods preserve the input brightness on the output image with a significant contrast enhancement, they may produce images which do not look as natural as the input ones. The basic idea of HE method is to re-map the gray levels of an image. HE tends to introduce some annoying artifacts and unnatural enhancement. To overcome these drawbacks different brightness preserving techniques are used which are covered in the literature survey. There are different images used in different time period and comparison on the basis of subjective and objective parameters. Subjective parameters are visual quality and computation time and objective parameters are Peak signal noise ratio (PSNR), Mean squared error (MSE), Normalized Absolute Error (NAE), Normalized Correlation, Error Color and Composite Peak Signal to Noise Ratio (CPSNR).[b][/b]
Authors and Affiliations
Dinesh Sonker
Keywords
Related Articles
- EP ID EP162021
- DOI -
- Views 100
- Downloads 0
Design and Stress Analysis of various cross section of Hook
Hooks are employed in heavy industries to carry tonnes of loads safely. These hooks have a big role to play as far as the safety of the crane loaded is concerned. With more and more industrialization the rate at wh...
Energy and Exergy Analysis of Extraction cum Back Pressure Steam Turbine
Abstract: Power is very vital factor for development of any society. Coal shares major chunk of fuels used to produce power in thermal power plants in India. Coal reserves are limited and present coal consumption...
A Novel Clustering Method for Similarity Measuring in Text Documents
Clustering is the process of grouping data into subsets in such a manner that identical instances are collected together, while different instances belong to different groups. The instances are thereby arranged i...
Microcontroller Based Automatic Sprinkler Irrigation System
Microcontroller based Automatic Sprinkler System is a new concept of using intelligence power of embedded technology in the sprinkler irrigation work. Designed system replaces the conventional manual work invol...
Investigation of strain hardening effects in CNC milling and chemical etching of Al 7075: A comparative study
Data representation on the components can be done by engraving on the metal. This operation on the test specimen was done by two ways. CNC milling and chemical etching were done on aluminium 7075 to represent...