Title :
Integer fast lapped biorthogonal transform via applications of DCT matrices and dyadic-valued factors for lifting coefficient blocks
Author :
Suzuki, Takumi ; Kudo, Hiroyuki
Author_Institution :
Fac. of Eng., Inf. & Syst., Univ. of Tsukuba, Tsukuba, Japan
Abstract :
This paper presents a realization of integer fast lapped biorthogonal transform (FLBT) via applications of discrete cosine transform (DCT) matrices and dyadic-valued factors for lifting coefficient blocks. It is obtained by using the block-lifting factorization as our previous work and easy matrix manipulations. The proposed FLBT has higher coding performance and fewer rounding operations than the conventional methods. The practicality of the proposed FLBT is validated through lossy-to-lossless image compression (coding) simulation which unifies lossy and lossless image coding.
Keywords :
discrete cosine transforms; image coding; matrix algebra; DCT matrices; FLBT; block-lifting factorization; discrete cosine transform; dyadic-valued factors; image coding; integer fast lapped biorthogonal transform; lifting coefficient block; lossy-to-lossless image compression; Discrete cosine transforms; Encoding; Gain; Image coding; Standards; Transform coding; Block-lifting structure; discrete cosine transform (DCT); dyadic-valued factor; fast lapped biorthogonal transform (FLBT); lossy-to-lossless image coding;
Conference_Titel :
Image Processing (ICIP), 2013 20th IEEE International Conference on
Conference_Location :
Melbourne, VIC
DOI :
10.1109/ICIP.2013.6738165
