DocumentCode
2008283
Title
A method for variable quantization in JPEG for improved text quality in compound documents
Author
Konstantinides, Konstaritinos ; Tretter, Daniel
Author_Institution
Stream Machine, Santa Clara, CA, USA
Volume
2
fYear
1998
fDate
4-7 Oct 1998
Firstpage
565
Abstract
In this paper we present a JPEG-compliant method for the efficient variable quantization of compound documents. By measuring DCT activity in each of the 8×8 blocks, our scheme automatically detects the image parts and text parts of a document and adjusts the quantization scaling factors so that text blocks are compressed at higher quality than image blocks. Experimental results from three different quantization schemes are also reported
Keywords
data compression; discrete cosine transforms; document image processing; image coding; transform coding; DCT activity; JPEG-compliant method; compound documents; image parts; quantization scaling factors; text parts; text quality; variable quantization; Discrete cosine transforms; Frequency domain analysis; Graphics; Huffman coding; Image coding; Image segmentation; Laboratories; Quantization; Streaming media; Transform coding;
fLanguage
English
Publisher
ieee
Conference_Titel
Image Processing, 1998. ICIP 98. Proceedings. 1998 International Conference on
Conference_Location
Chicago, IL
Print_ISBN
0-8186-8821-1
Type
conf
DOI
10.1109/ICIP.1998.723524
Filename
723524
Link To Document