Portal de Periódicos da CAPES

An evaluation of JPEG and JPEG 2000 irreversible compression algorithms applied to neurologic computed tomography and magnetic resonance images

2000; Springer Science+Business Media; Volume: 13; Issue: S1 Linguagem: Inglês

10.1007/bf03167656

1618-727X

Vladimir Savcenko, Bradley J. Erickson, Kenneth R. Persons, Norbert G. Campeau, John Huston, Christopher P. Wood, Shawn A. Schreiner,

Medical Image Segmentation Techniques

We performed visual comparison of 200 head magnetic resonance (MR) and 200 head computed tomography (CT) images compressed at two levels using standard Joint Photographic Experts Group (JPEG) irreversible compression and a preliminary version of the JPEG 2000 irreversible algorithm. Blinded evaluations by neuroradiologists compared original versus either JPEG or JPEG 2000. We found that this version of JPEG 2000 did not perform as well as the current JPEG for head CTs, but for MR images, JPEG 2000 performed as well or better. Around 7∶1 compression ratio seemed to be a conservative point where there was no perceptible difference.