Title :
Image compression algorithm based on reversible integer time-domain lapped transform and quadtree partition
Author :
Xiuhua Ma ; Jiwen Dong ; Peilong Zhao
Author_Institution :
Dept. of Comput. Sci. & Technol., Univ. of Jinan, Jinan, China
Abstract :
A new image compression system based on quadtreepartition and reversible integer time-domain lapped transform (RTDLT) as core transform technology is proposed. The system obtained transformation region of different sizes through quadtree partition to remove the correlation between the pixels by utilizing features of image regions. The performance of reversible integer discrete cosine transform (RDCT) was improved with the method of quadtree partition. Superior performance can be achieved in most cases than the fixed block RTDLT and RDWT about the rate-distortion and subjective visual quality.
Keywords :
data compression; discrete cosine transforms; image coding; quadtrees; RDCT; RTDLT; image compression algorithm; image region features; quadtree partition; reversible integer discrete cosine transform; reversible integer time-domain lapped transform; Discrete cosine transforms; Filtering algorithms; Image coding; Image segmentation; Matrix decomposition; Time-domain analysis; DCT; image compression; quadtree partition; reversible integer time-domain lapped transform;
Conference_Titel :
Information Technology and Artificial Intelligence Conference (ITAIC), 2014 IEEE 7th Joint International
Print_ISBN :
978-1-4799-4420-0
DOI :
10.1109/ITAIC.2014.7065053
