NDLI: Variable block-size double predictor DPCM image data compression

Content Provider	IEEE Xplore Digital Library
Author	Jia-Chyi Wu Hong-Bin Chen Ren-Jean Liu
Copyright Year	2000
Description	Author affiliation: Dept. of Commun. & Comput. Eng., Dayeh Univ., Chang-Hua, Taiwan (Jia-Chyi Wu)
Abstract	This study investigates the design and performance of a double predictor differential pulse code modulation (DP-DPCM) algorithm for image data compression. A modified DP-DPCM image coding system operates on an image that has been preprocessed into segments of variable size, square blocks. The differential values between the nearby pixels within an image block are reduced. Therefore, we can decrease the distribution range of prediction error as well as reduce the bit rate and quantization levels. Each block is separately encoded by a DP-DPCM system to reduce the effect from the fed-back quantization error. The system performance of this variable block-size DP-DPCM image data compression scheme is about 5 dB (or greater) coding gain in SNR than that of a conventional DPCM system for low-rate (R/spl les/3) image compression.
Starting Page	131
Ending Page	135
File Size	180829
Page Count	5
File Format	PDF
ISBN	0769505953
DOI	10.1109/IAI.2000.839586
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-04-02
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Data compression Image coding Pulse modulation Quantization Algorithm design and analysis Pulse compression methods Modulation coding Data preprocessing Image segmentation Pixel
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in