The JEG Hybrid Group is an open collaboration working together to develop a robust Hybrid Perceptual/Bit-Stream model. The JEG has developed and made available routines to create and capture bit-stream data and parse bit-streams into HMIX files. Efforts are underway into developing subjectively rated video quality datasets with bit-stream data that can be used by all JEG researchers. The goal is to produce one model that combines metrics developped separately by a variety of researchers.
Questions should be sent to the JEG Hybrid Co-Chairs Marcus Barkowsky, Glenn Van Wallendael, and Lucjan Janowski.
- Summary information about the JEG Hybrid activities can be found on the VQEG-JEG Wiki pages.
- The current test plan and supplemental files can be downloaded here and here.
- The JEG database featuring degraded videos, bitstreams, and additional files is available here.
- Please subscribe to the mailing list of JEG-Hybrid in order to get involved.
Participants are invited to develop subjective rated video datasets to be shared.
Participants are invited to contribute components that will be combined into the final model. Ideas for modules that can be researched and combined into this JEG Hbyrd model include:
Packet Loss Analysis: temporal and spatial duration, error propagation, NR end-to-end distortion tracking, discontinuities, efficiency of error concelament in decoder, position and length in bit-stream
Image Quality: artifact detection (blocking, blur, ringing), error concealment effectiveness
Image/Sequence Characteristics: amount of motion, texture analysis, content classification (e.g., cartoon), spatial frequency (e.g., flat regions), direction of faces and persons,
Saliency and Visual Attention: object detection, background segmentation, texture and luminance masking, attraction of gaze by severe degradations, perspective estimation, motion-based algorithms
Temporal Visual Attention: temporal visibility of degradations, scene cuts, behavioral changes across sequences
Bit-Stream Quality: indicators from the HMIX File: framerate, picture size, MB type and QP, MB type and bit-rate, motion vectors and subblock pattern, DCT coefficient distribution