JPEG2000 and JPEG: image quality measures of compressed medical images

摘要

Due to the constrained bandwidth and storage capacity, medical images must be compressed before transmission and storage. However, the compression will reduce the image fidelity, especially when the image is compressed of lower bit rate, which cannot be tolerated in medical field. In this paper, the compression performance of the new JPEG2000 and the more conventional JPEG is studied. The parameters compared include the compression efficiency, peak signal-to-noise ratio (PSNR), picture quality scale (PQS), and mean opinion score (MOS). Three types of medical images are used -X-ray, magnetic resonance imaging (MRI) and ultrasound. Overall, the study shows that JPEG2000 compression is more acceptable and superior compare to JPEG in lossy compression.