Loss of interpretability due to compression effects as measured by the new video NIIRS
Darrell L. Young, Tariq Bakir, Robert Butto, Charles Duffield, Fred Petitti · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2009
The effect of video compression is examined using the task-based performance metrics of the new Video National Intelligence Interpretability Rating Scale (Video NIIRS). Video NIIRS is a subjective task criteria scale similar to the well-known Visible NIIRS used for still image quality measurement. However, each task in the Video NIIRS includes a dynamic component that requires video of sufficient spatial and temporal resolution. The loss of Video NIIRS due to compression is experimentally measured for select cases. The results show that an increase in the compression and an associated increase in artifacts reduces task based interpretability and lowers the Video-NIIRS rating of the video clips. The extent of the effect has implications for system design.