Spatial and temporal pooling of image quality metrics for perceptual video quality assessment on packet loss streams

Video streaming through bandwidth-limited channels often suffer from packet losses. Therefore, perceptual quality assessment on video sequences with packet losses is a critical issue in digital video communications. This paper analyzes several image quality metrics and evaluates their applications using spatial and temporal pooling schemes in perceptual video quality assessment for video streams with packet losses. Several approaches using Minkowski summation and averages over different distorted spatial regions and temporal frames to pool the spatial and temporal qualities are evaluated. The experimental results with respect to the subjective video quality measurements demonstrate that the subjects are more sensitive to the most annoying spatial regions and temporal segments when assessing the video quality of the lossy streams.