TY - JOUR
T1 - JPEG and Sequential Search Algorithm applied on Low-Frequency Sub-Band
AU - Mohammed Mustafa Siddeq
JO - Journal of Information and Computing Science
VL - 3
SP - 163
EP - 172
PY - 2024
DA - 2024/01
SN - 5
DO - http://doi.org/
UR - https://global-sci.org/intro/article_detail/jics/22707.html
KW -  Discrete  Wavelet  Transform,  JPEG  Technique,  Minimize  Algorithm,  Sequential  Search 
Algorithm  

AB -  In  this  research  we  introduce  and  idea  for  image  compression,  based  on  JPEG  technique  and 
Sequential Search Algorithm, at first using Discrete Wavelet Transform (DWT) to obtain LL sub-band, then 
apply  JPEG  technique  on  the  LL  sub-band.  JPEG  technique  consist  of;  JPEG  Transformation,  and  JPEG 
Coding. The LL sub-band transformed by JPEG transformation for obtaining more compression ratio. Before 
apply JPEG coding, our algorithm used feedbacks system for inverse JPEG transformation to get decoded LL 
sub-band, and then the difference between decoded LL and original LL are stored in a new matrix called D-
Matrix,  finally  the  D-Matrix  compressed  by  Sequential  Search  Algorithm.  The  Decompression  algorithm 
consists of; Inverse JPEG transformation to get decoded LL, Sequential Search Algorithm to find D-Matrix, 
Add  D-Matrix  with  the  decoded  LL  and  apply  inverse  DWT  to  get  decompressed  image.  Our  algorithm 
tested on two different gray level images and compared with JPEG and JPEG2000.