The following table or figure may be downloaded to PowerPoint for personal use in teaching and presentations. This feature is available to all subscribers to the journal.
You MUST read and follow the guidelines at Request to Reproduce AJR Content if you are distributing or using AJR content beyond academic use (limited distribution, non-revenue producing, or educational purposes).
(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.
Fig. 4 —Joint Photographic Experts Group (JPEG) 2000 compression
artifacts in transverse average-intensity-projection (AIP) (left
column), thin-section (middle column), and thick-section
(right column) abdominal CT images in 70-year-old man with liver
cirrhosis. (See also Figs. S4A-S4F in supplemental data online.) Compared with
original images (top row), artifacts increase in order of AIP,
thick-section, and thin-section images in 15:1 compressed versions (second
row), altering texture of liver (L) and ascites (A). Subtraction images
(third row) and High Dynamic Range Visual Difference Predictor
(HDR-VDP) maps (bottom row) represent compression artifacts measured
mathematically and simulated-perceptually, respectively. Note that original
thin-section image is too noisy to be used in primary interpretation.
