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authoredNov 24, 2019
Update README.md
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‎README.md

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@@ -42,6 +42,16 @@ The best way to evaluate the model is to integrate the model into the HEVC encod
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Using this evaluating pipeline, we can compare the change in encoding time and BDBR at the same time.
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| YUV sequence | bitrate-HEVC | bitrate-CNN | Y-PSNR-HEVC | Y-PSNR-CNN | YUV-PSNR-HEVC | YUV-PSNR-CNN | Time-HEVC | Time-CNN |
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| --------------------- | ------------ | ----------- | ----------- | ---------- | ------------- | ------------ | --------- | -------- |
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| Flowervase_416x240_30 | 522.3700 | 556.9627 | 34.0869 | 33.8087 | 35.2319 | 34.9543 | 1225.481 | 367.107 |
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| Keiba_416x240_30 | 539.8007 | 582.1690 | 33.4852 | 33.3019 | 34.5684 | 34.3756 | 1281.129 | 356.524 |
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| mobile_352x288_20 | 1853.5339 | 1955.5392 | 28.2047 | 27.9656 | 29.3071 | 29.0889 | 1629.696 | 666.098 |
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| RaceHorses_832x480_30 | 2594.1504 | 2719.9232 | 32.1133 | 31.9442 | 32.9179 | 32.7702 | 5440.564 | 1513.008 |
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| ParkScene_1920x1080_24 | 7361.9354 | 7702.8979 | 32.7847 | 32.5906 | 33.9392 | 33.7562 | 13238.985 | 3591.274 |
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The average **BD bitrate** increase is: 6.60%. The average loss in **BD-PSNR** is: 0.6dB. The average **encoding time** reduction is: 71.5%.
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Another way to evaluate the model is to compare the difference in RD-cost for each YUV file encoded. As ```xCompressCU()``` in HEVC encoder calculates the RD-cost exhaustively at each depth, we can get the RD-cost for every possible depth decision. Thus, we can realize comparison of RD-cost between the original encoder and the CNN model. See the ```test RD-cost``` folder for codes.
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The increase in **RD cost** of our model is: 2.1% (tested only on one YUV sequence)

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