Check out the new USENIX Web site.

Home About USENIX Events Membership Publications Students
USENIX Technical Program - Abstract - Internet Technologies & Systems 99

JPEG Compression Metric as a Quality Aware Image Transcoding

Surendar Chandra and Carla Schlatter Ellis, Duke University


Transcoding is becoming a preferred technique to tailor multimedia objects for delivery across variable network bandwidth and for storage and display on the destination device. This paper presents techniques to quantify the quality-versus-size tradeoff characteristics for transcoding JPEG images. We analyze the characteristics of images available in typical Web sites and explore how we can perform informed transcoding using the JPEG compression metric. We present the effects of this transcoding on the image storage size and image information quality. We also present ways of predicting the computational cost as well as potential space benefits achieved by the transcoding. These results are useful in any system that uses transcoding to reduce access latencies, increase effective storage space as well as reduce access costs.
  • View the full text of this paper in HTML form and PDF form.

  • If you need the latest Adobe Acrobat Reader, you can download it from Adobe's site.

  • To become a USENIX Member, please see our Membership Information.

?Need help? Use our Contacts page.

Last changed: 25 Feb 2002 ml
Technical Program
Conference index