JVET-AF0137 AHG12: IntraTMP with Merge Candidates [K. Naser, F. Le Léannec, A. Robert, F. Galpin (InterDigital)]
In the current IntraTMP design, the template matching is performed on a predefined search area to obtain a candidate list of predictors specified by their block vectors. Compared to IBC mode, the readily available block vectors from neighbouring merge candidates are not explored in IntraTMP mode despite being more correlated with the properties of the current block. This contribution proposes extending the IntraTMP candidate list with all the merge candidates block vectors. The following results are obtained for camera-view content:
AI: -0.05% 0.01% -0.02% EncT 100.6% DecT 101.3%
For screen content, AI configuration, the following results were provided:
Class F | -0.16% | -0.11% | 0.09% | 99.0% | 99.6% | 99.9% |
Class TGM | -0.20% | -0.16% | -0.14% | 96.5% | 93.4% | 99.7% |
The provided results show a reduction in encoding/decoding time for Class TGM, but according to the proponent, such runtime may not be accurate. Close to 100% runtime is expected.
One expert expressed support for investigating this in an EE.
It was agreed to investigate this in an EE.