Quality assessment of 360 video view sessions

What this post added

Introduced SSIM360 and 360QVM, novel quality assessment standards for 360 video streaming. SSIM360 addresses the warping problem by weighting per-sample SSIM scores based on sample stretching in the equirectangular representation. 360QVM tackles the field-of-view problem by mapping view direction to pixel density and using this to scale SSIM360 scores, accounting for view-dependent optimizations and resolution changes within the viewer's field of view.