METHOD AND APPARATUS FOR DOWN-SAMPLING AND UP-SAMPLING IN MATRIX INTRA PREDICTION FOR VIDEO
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United States of America
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Apr 10, 2025
app pub date -
Jan 2, 2024
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Jan 2, 2024
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Abstract
An apparatus includes a communication interface configured to receive a bitstream for a compressed video and a processor operably coupled to the communication interface. The processor is configured to decode the bitstream for the compressed video and obtain reference samples associated with a block of a video frame. The processor is also configured to select a down-sampling filter to use in down-sampling the reference samples. The processor is also configured to apply the selected down-sampling filter to the reference samples to obtain reduced reference samples. The processor is also configured to obtain a reduced intra prediction associated with the block using the reduced reference samples. The processor is also configured to select an up-sampling filter to use in up-sampling the reduced intra prediction. The processor is also configured to apply the selected up-sampling filter to the reduced intra prediction to obtain a full intra prediction of the block.
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