Designing Quantization Table for Hadamard Transform
based on Human Visual System for Image Compression
K.Veeraswamy*
, S. Srinivaskumar#, B.N.Chatterji§
*Research scholar, ECE Dept.,
JNTUCE, Kakinada,
A.P, India.
#Professor ,ECE Dept.,
JNTUCE, Kakinada,
A.P, India.
§Former
Professor, E&ECE Dept.,
IIT, Kharagpur,W.B,
India.
Abstract:
This paper discusses lossy image compression using Hadamard
Transform (HT). Quantization table plays significant role in
image compression (lossy) that improves the compression
ratio without sacrificing visual quality. In this work,
Human Visual system (HVS) is considered to derive the
quantization table, which is applicable for Hadamard
Transform. By incorporating the human visual system with the
uniform quantizer, a perceptual quantization table is
derived. This quantization table is easy to adapt to the
specified resolution for viewing. Results show that this
quantization table is good in terms of improving peak signal
to noise ratio (PSNR), Normalized Cross correlation (NCC)
and to reduce blocking artifacts. This work is extended to
test the robustness of watermarking against various attacks.
Keywords:
Image compression, Hadamard Transform, human visual system,
quantization table, watermarking.
( Full Paper
540 KB)
Biography:
 |
K.Veeraswamy is currently working as
Associate Professor in ECE Department, Bapatla
Engineering College, Bapatla, India. He is working
towards his Ph.D. at JNTU College of Engineering,
Kakinada, India. He received his M.Tech. from the
same institute. He has nine years experience of
teaching undergraduate students and post graduate
students. His research interests are in the areas of
image compression, image watermarking and networking
protocols. |
 |
S.Srinivas Kumar is currently Professor and
HOD in ECE Department, JNTU College of Engineering,
Kakinada, India. He received his M.Tech. from
Jawaharlal Nehru Technolo-gical University,
Hyderabad, India. He received his Ph.D. from E&ECE
Department IIT, Kharagpur. He has nineteen years
experience of teaching undergraduate and
post-graduate students and guided number of
post-graduate theses. He has published 15 research
papers in National and International journals.
Presently he is guiding five Ph.D students in the
area of Image processing. His research interests are
in the areas of digital image processing, computer
vision, and application of artificial neural
networks and fuzzy logic to engineering problems. |
 |
B.N.Chatterji is a former Professor in E&ECE
Department IIT, Kharagpur. He received B.Tech. and
Ph.D. (Hons.) from E&ECE Department IIT, Kharagpur
in 1965 and 1970, respectively. He has served the
Institute under various administrative capabilities
as Head of Department, Dean (Academic), etc. He has
chaired many international and national symposium
and conferences organized in India and abroad, apart
from organizing 15 short term courses for Industries
and Engineering college teachers. He has guided 35
Ph.D. scholars. Presently, he is active in research
by guiding three research scholars. He has published
more than 150 papers in reputed international and
national journals apart from authoring three
scientific books. His research interests are
low-level vision, computer vision, image analysis,
pattern recognition and motion analysis. |
BibTex:
@ARTICLE{P1150712003,
AUTHOR = {K.Veeraswamy
and S. Srinivaskumar and B.N.Chatterji},
TITLE = {Designing
Quantization Table for Hadamard Transform based on Human
Visual System for Image Compression},
JOURNAL ={ICGST International Journal on
Graphics, Vision and Image Processing, GVIP},
YEAR = {2007},
VOLUME = {07},
ISSUE ={II},
PAGES={31--38}
}
(Full Paper
540 KB)
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