Image processing ASIC for real-time contrast enhancement

Author

Shin, Yong-Chul ; Sridhar, Ramalingam ; Demjanenko, Victor ; Palumbo, Paul W. ; Hull, Jonathan ; Srihari, Sargur N.

Author_Institution

Center of Excellence for Document Anal. & Recognition, State Univ. of New York, Buffalo, NY, USA

fYear

1992

Firstpage

197

Lastpage

200

Abstract

An ASIC chip set that implements adaptive local contrast enhancement for real-time image processing is presented. The contrast enhancement is based on a nonlinear mapping M(A,σ,P), where A is an average, σ is a standard deviation, and P is a center pixel over a 9×9 window. The throughput rate is 100 ns per pixel. A dynamic programming technique and pipelining are used to minimize the space-time constraint in the implementation

Keywords

application specific integrated circuits; dynamic programming; image processing equipment; pipeline processing; ASIC chip set; adaptive local contrast enhancement; average; center pixel; dynamic programming; nonlinear mapping; pipelining; real-time contrast enhancement; real-time image processing; space-time constraint; standard deviation; throughput rate; Application specific integrated circuits; Computer architecture; Hardware; Image analysis; Image processing; Pipeline processing; Pixel; Postal services; Streaming media; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

ASIC Conference and Exhibit, 1992., Proceedings of Fifth Annual IEEE International

Conference_Location

Rochester, NY

Print_ISBN

0-7803-0768-2

Type

conf

DOI

10.1109/ASIC.1992.270278

Filename

270278