TY - JOUR
T1 - Integer DCT based on direct-lifting of DCT-IDCT for lossless-to-lossy image coding
AU - Suzuki, Taizo
AU - Ikehara, Masaaki
N1 - Funding Information:
Manuscript received November 23, 2009; revised April 26, 2010; accepted April 26, 2010. Date of publication June 01, 2010; date of current version October 15, 2010. This work was supported by a Grant-in-Aid for the Global Center of Excellence (G-COE) for High-Level Global Cooperation for Leading-Edge Platform on Access Spaces from the Ministry of Education, Culture, Sport, Science, and Technology in Japan, and a Grant-in-Aid for the Japan Society for the Promotion of Science (JSPS) Fellows. The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Margaret Cheney.
PY - 2010/11
Y1 - 2010/11
N2 - A discrete cosine transform (DCT) can be easily implemented in software and hardware for the JPEG and MPEG formats. However, even though some integer DCTs (IntDCTs) for lossless-to-lossy image coding have been proposed, such transform requires redesigned devices. This paper proposes a hardware-friendly IntDCT that can be applied to both lossless and lossy coding. Our IntDCT is implemented by direct-lifting of DCT and inverse DCT (IDCT). Consequently, any existing DCT device can be directly applied to every lifting block. Although our method requires a small side information block (SIB), it is validated by its application to lossless-to-lossy image coding.
AB - A discrete cosine transform (DCT) can be easily implemented in software and hardware for the JPEG and MPEG formats. However, even though some integer DCTs (IntDCTs) for lossless-to-lossy image coding have been proposed, such transform requires redesigned devices. This paper proposes a hardware-friendly IntDCT that can be applied to both lossless and lossy coding. Our IntDCT is implemented by direct-lifting of DCT and inverse DCT (IDCT). Consequently, any existing DCT device can be directly applied to every lifting block. Although our method requires a small side information block (SIB), it is validated by its application to lossless-to-lossy image coding.
KW - Direct-lifting
KW - integer discrete cosine transform (IntDCT)
KW - lossless-to-lossy image coding
KW - side information block (SIB)
UR - http://www.scopus.com/inward/record.url?scp=78049263953&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78049263953&partnerID=8YFLogxK
U2 - 10.1109/TIP.2010.2051867
DO - 10.1109/TIP.2010.2051867
M3 - Article
C2 - 20519151
AN - SCOPUS:78049263953
SN - 1057-7149
VL - 19
SP - 2958
EP - 2965
JO - IEEE Transactions on Image Processing
JF - IEEE Transactions on Image Processing
IS - 11
M1 - 5475264
ER -