Classified JPEG coding of mixed document images for printing

Author

Ramos, Marcia G. ; De Queiroz, Ricardo L.

Author_Institution

Cornell Univ., Ithaca, NY, USA

Volume

9

Issue

4

fYear

2000

fDate

4/1/2000 12:00:00 AM

Firstpage

716

Lastpage

720

Abstract

This paper presents a modified JPEG coder that is applied to the compression of mixed documents (containing text, natural images, and graphics) for printing purposes. The modified JPEG coder proposed in this paper takes advantage of the distinct perceptually significant regions in these documents to achieve higher perceptual quality than the standard JPEG coder. The region-adaptivity is performed via classified thresholding being totally compliant with the baseline standard. A computationally efficient classification algorithm is presented, and the improved performance of the classified JPEG coder is verified

Keywords

adaptive signal processing; code standards; data compression; document image processing; image classification; image coding; printing; telecommunication standards; baseline standard; classified JPEG coding; classified thresholding; computationally efficient classification algorithm; graphics; mixed document images; mixed documents compression; modified JPEG coder; natural images; perceptual quality; perceptually significant regions; performance; printing; region-adaptivity; standard JPEG coder; text; Classification algorithms; Code standards; Graphics; Image coding; Image resolution; Printing; Quantization; Rendering (computer graphics); Streaming media; Transform coding;

fLanguage

English

Journal_Title

Image Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7149

Type

jour

DOI

10.1109/83.841946

Filename

841946