A perceptual evaluation of JPEG 2000 image compression for digital mammography: contrast-detail characteristics.
In this investigation the effect of JPEG 2000 compression on the contrast-detail (CD) characteristics of digital mammography images was studied using an alternative forced choice (AFC) technique. Images of a contrast-detail phantom, acquired using a clinical full-field digital mammography system, were compressed using a commercially available software product (JPEG 2000). Data compression was achieved at ratios of 1:1, 10:1, 20:1, and 30:1 and the images were reviewed by seven observers on a high-resolution display. Psychophysical detection characteristics were first computed by fitting perception data using a maximum-likelihood technique from which CD curves were derived at 50%, 62.5%, and 75% threshold levels. Statistical analysis indicated no significant difference in the perception of mean disk thickness up to 20:1 compression except for disk diameter of 1 mm. All other compression combinations exhibited significant degradation in CD characteristics.
Suryanarayanan
Sankararaman
S
Department of Radiology, Emory University School of Medicine, 1364 Clifton Rd. NE, Atlanta, GA 30322, USA.
Karellas
Andrew
A
Vedantham
Srinivasan
S
Waldrop
Sandra M
SM
D'Orsi
Carl J
CJ
D000465:Algorithms; D044962:Data Compression; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation* / Q000379:methods*; D008327:Mammography / Q000295:instrumentation* / Q000379:methods*; D015233:Models, Statistical; D019047:Phantoms, Imaging; D012984:Software