Remove H/V considerations in pvq_theta
As H/V Prediction is not implemented in AV1, pvq_theta does not need to consider it when adjusting its parameters. It is important to understand that the results shown here are not the outcome of this patch but the outcome of leaving the condition in and enabling is_keyframe. Currently, this change does not impact the bitstream as is_keyframe is hard coded to 0 for PVQ. The following result show that enabled for spatial intra, the H/V pred tweaks do not yeild benefits. Enabling the condition for all planes in a keyframe: Subset1: pvq@2017-02-28T20:31:50.969Z -> pvq-unreliable-intra@2017-02-28T20:30:32.049Z PSNR | PSNR Cb | PSNR Cr | PSNR HVS | SSIM | MS SSIM | CIEDE 2000 0.0896 | 0.0860 | -0.0759 | 0.1608 | 0.1442 | 0.1599 | 0.0147 Enabling the condition for Luma plane in a keyframe: Subset1: pvq@2017-02-28T20:31:50.969Z -> pvq-unreliable-intra-luma@2017-02-28T20:34:18.029Z PSNR | PSNR Cb | PSNR Cr | PSNR HVS | SSIM | MS SSIM | CIEDE 2000 0.0713 | 0.1317 | 0.0717 | 0.1253 | 0.1365 | 0.1406 | 0.0312 Enabling the condition for Chroma planes in a keyframe: Subset1: pvq@2017-02-28T20:31:50.969Z -> pvq-unreliable-intra-chroma@2017-02-28T21:09:38.992Z PSNR | PSNR Cb | PSNR Cr | PSNR HVS | SSIM | MS SSIM | CIEDE 2000 0.0232 | -0.1240 | -0.1379 | 0.0029 | 0.0187 | 0.0191 | -0.0916 Based on these results, the condition in the if statement is removed. Change-Id: Icd2f1313952548939069b4570cf7db04632f35f3
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