This working group is studying the psychophysical effects of sharpening & HDR processing. We are developing metrics to score the quality and realism of image processing.
In September 2025, the updated P1858 PAR was approved by IEEE NesCom through 2029.
- The name of the standard has been updated to “Camera Perceptual Image Quality” to replace the previous name “Camera Phone Image Quality”, which unnecessarily pigeonholed the metrics that were developed.
- The standard has changed from an entity-based standard to an individual-based standard.
- The Consumer Technology Society is now sponsoring the standard. See our Annex A for more details
Dor Barber from Intel Israel is a key contributor to image processing. He has developed algorithms to improve local contrast using the CLAHE algorithm for HDR and sharpening using unsharp mask. His colleague Hava Matichin from Intel Israel has also contributed to this effort and is joining the initiative.
Chinh Tran is our contributing PhD student from the Catholic University of America in Washington, DC, with experience in software development, supervised by Qunanzeng Wang of the FDA & ISO TC 172. Chinh has recently developed the psychophysical testing web app framework.
Meg Borek, from Imatest, who is also conducting psychophysical research into the processing of skin tones, has joined the group.
We used Python for this project and are keeping everything open source at:
https://github.com/IEEE1858/Psychophysics
The images we previously selected to study were obtained from the MIT-Adobe FiveK Dataset,
Next steps are finalizing the incrementally processed Sharpening and HDR local-tone-mapped image sets. completing the refinement and testing of the web application, securing participants for psychophysical research, and planning for future data analysis, paper writing, and conference presentations.
Psychophysical research group monthly meetings occur on the second Wednesday at 11:00 ET.