Analysis of Spatial and Temporal Information Variation for 10-Bit and 8-Bit Video Sequences

Spatial Information (SI) and Temporal Information (TI) have been used widely as an approximate estimation of video complexity. Recently, SI (and TI) have found use in many other applications such as Quality of Experience modeling, Bandwidth and Rate-distortion modeling, etc., for both traditional and non-traditional (gaming, dynamic vision sensors, etc.) videos. It is often assumed that SI and TI only depend on video content, while instead factors such as resolution, bit depth, compression have an impact on the values of SI and TI for a specific video content. A systematic study on SI and TI for videos, investigating the effect of different video encoding and processing steps on SI and TI values has been missing so far. Also, SI and TI calculation has been limited to 8-bit videos, while there has been increasing popularity and usage of 10-bit videos. Towards this end, we present in this paper a comprehensive evaluation of the variation of SI and TI for different 8-bit and 10-bit videos. Results and insights into the variation of SI and TI values for different encoding settings, choice of encoders, temporal pooling methods, resolution, etc. are presented in this study.