Color enhancement in the compressed domain

Author

Mukhopadhyay, Jayanta ; Mitra, Sanjit K.

Author_Institution

Dept. of Comput. Sci. & Eng., Indian Inst. of Technol., Kharagpur

fYear

2008

fDate

12-15 Oct. 2008

Firstpage

3144

Lastpage

3147

Abstract

This paper presents a new efficient technique for color enhancement in the compressed domain. In the proposed technique the enhancement computation is performed in three steps, namely, adjustment of dynamic range of brightness values, preservation of local contrast and preservation of color with all computations involving scaling of the DCT coefficients. Further special care has been taken for reducing the blocking artifacts. The proposed algorithm provide better performances compared to some of the existing techniques in the compressed domain.

Keywords

data compression; discrete cosine transforms; image coding; image colour analysis; image enhancement; DCT coefficient scaling; color enhancement computation; compressed domain; discrete cosine transforms; dynamic brightness value range; local contrast preservation; Brightness; Color; Computer science; Discrete cosine transforms; Dynamic range; Image coding; Transform coding; Color enhancement; Colorfulness; Discrete cosine transform (DCT); JPEG Images; Quality Metrics;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 2008. ICIP 2008. 15th IEEE International Conference on

Conference_Location

San Diego, CA

ISSN

1522-4880

Print_ISBN

978-1-4244-1765-0

Electronic_ISBN

1522-4880

Type

conf

DOI

10.1109/ICIP.2008.4712462

Filename

4712462