Method and apparatus for video coding

An apparatus for video decoding, comprising:

• processing circuitry configured to:
• decode prediction information of a current block from a coded video bitstream, the prediction information being indicative of an inter prediction mode and a usage of a position dependent prediction combination (PDPC) process in the inter prediction mode, the PDPC process being configured to calculate a weighted combination of selected neighboring samples of a target block selected based on a position of a target sample in the target block and a prediction value for the target sample;
• calculate, by performing the PDPC process for a current sample in the current block, an intermediate value for the current sample in the current block, a configuration of the PDPC process for the current sample including setting the current block as the target block, setting the current sample as the target sample, and simplifying the PDPC process by setting the prediction value for the target sample to zero;
• and
• combine the intermediate value for the current sample with an inter prediction value of the current sample to reconstruct the current sample, wherein
• the PDPC process for the current sample is performed by using a calculation module for PDPC of an intra prediction mode,
• the intermediate value calculated by the simplified PDPC process is independent of the prediction value of the target sample, and
• the simplified PDPC process does not include a shift operation of the PDPC process.

A non-transitory computer-readable medium storing instructions which when executed by a computer for video decoding cause the computer to perform:

• decoding prediction information of a current block from a coded video bitstream, the prediction information being indicative of an inter prediction mode and a usage of a position dependent prediction combination (PDPC) process in the inter prediction mode, the PDPC process being configured to calculate a weighted combination of selected neighboring samples of a target block selected based on a position of a target sample in the target block and a prediction value for the target sample;
• calculating, by performing the PDPC process for a current sample in the current block, an intermediate value for the current sample, a configuration of the PDPC process for the current sample including setting the current block as the target block, setting the current sample as the target sample, and simplifying the PDPC process by setting the prediction value for the target sample to zero;
• and
• combining the intermediate value for the current sample with an inter prediction value of the current sample to reconstruct the current sample, wherein
• the PDPC process for the current sample is performed by using a calculation module for PDPC of an intra prediction mode,
• the intermediate value calculated by the simplified PDPC process is independent of the prediction value of the target sample, and
• the simplified PDPC process does not include a shift operation of the PDPC process.