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7th Meeting: Torino, July 2017 2017-07-14 11:35
AHG8: On the derivation of weighted to spherically uniform PSNR (WS-PSNR) for adjusted cubemap projection (ACP) format
Authors: Xiaoyu Xiu InterDigital Yong He InterDigital Y. Ye InterDigital
Abstract
This contribution presents one modified derivation method of weighted to spherically uniform PSNR (WS-PSNR) for the adjusted cubemap projection (ACP) format in the 360Lib-3.0. Based on the concept of the ACP (i.e., adjusting the sample coordinates in a cubemap face), the proposed method calculates the WS-PSNR weight of each sample in one ACP face by firstly deriving the weight value of its correspondence sample in the cubemap face and then adjusting the weight value according to the relationship between the sample coordinates in the cubemap face and the ACP face. It is asserted that compared to the existing WS-PSNR calculation method for the ACP in 360Lib-3.0, the proposed method can more accurately reflect the true spherical sampling characteristics of the ACP. Simulation results also show that the WS-PSNR values reported by the proposed method are more consistent with the S-PSNR-NN.
Meeting Notes
JVET-G0088 AHG8: On the derivation of weighted to spherically uniform PSNR (WS-PSNR) for adjusted cubemap projection (ACP) format [X. Xiu, Y. He, Y. Ye (InterDigital)]
References:
JVET-D0040 JVET-F0025 JVET-F1003 JVET-F1030 JVET-G0075
Cited:
JVET-G0149 X JVET-G1003 JVET-H1004 JVET-K1004 JVET-L1004 JVET-M1004 JVET-Q2004 JVET-S2004 JVET-T2004
ARCHIVE v2 :
JVET-G0088.DOCX JVET-G0088_r1.DOCX JVET_G0088.pdf metric measurements.xlsx
Decisions
JVET-G0088 AHG8: On the derivation of weighted to spherically uniform PSNR (WS-PSNR) for adjusted cubemap projection (ACP) format [X. Xiu, Y. He, Y. Ye (InterDigital)]
Citation