TY - GEN
T1 - Mammogram JPEG quantisation matrix optimisation for PACS
AU - Campbell, D.
AU - Maeder, A.
AU - Tapia-Vergara, F.
PY - 2001/12
Y1 - 2001/12
N2 - Clinical procedures and legal requirements increasingly demand greater performance in JPEG compression of digitised grayscale medical images without loss of visual fidelity or without exceeding a bounded error metric. Current JPEG common practice uses a default general-purpose luminance quantisation matrix. As an initial investigation into defining more suitable quantisation matrices for different medical image modalities, a new candidate matrix has been derived for mammograms. For a given SNR, the new quantisation matrix achieves a relative compression ratio performance improvement of approximately 22% for a quality factor of 95% and 15% for a quality factor of 85%. This study paves the way for a computationally intelligent approach to optimising the quantisation matrix for each medical image modality in both batch mode and adaptively on an image-by-image basis.
AB - Clinical procedures and legal requirements increasingly demand greater performance in JPEG compression of digitised grayscale medical images without loss of visual fidelity or without exceeding a bounded error metric. Current JPEG common practice uses a default general-purpose luminance quantisation matrix. As an initial investigation into defining more suitable quantisation matrices for different medical image modalities, a new candidate matrix has been derived for mammograms. For a given SNR, the new quantisation matrix achieves a relative compression ratio performance improvement of approximately 22% for a quality factor of 95% and 15% for a quality factor of 85%. This study paves the way for a computationally intelligent approach to optimising the quantisation matrix for each medical image modality in both batch mode and adaptively on an image-by-image basis.
UR - http://www.scopus.com/inward/record.url?scp=84928746676&partnerID=8YFLogxK
U2 - 10.1109/ANZIIS.2001.974038
DO - 10.1109/ANZIIS.2001.974038
M3 - Conference contribution
AN - SCOPUS:84928746676
T3 - ANZIIS 2001 - Proceedings of the 7th Australian and New Zealand Intelligent Information Systems Conference
SP - 1
EP - 6
BT - ANZIIS 2001 - Proceedings of the 7th Australian and New Zealand Intelligent Information Systems Conference
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 7th Australian and New Zealand Intelligent Information Systems Conference, ANZIIS 2001
Y2 - 18 November 2001 through 21 November 2001
ER -