Patent ID: 11889088
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for approximate reconstruction comprising:
selecting, by at least one processor, an intra-prediction mode;
applying, by the at least one processor, the intra-prediction mode to an original block of video data to generate a predicted block;
subtracting, by the at least one processor, the predicted block from the original block to generate a residual block;
applying, by the at least one processor, a simplified transform to the residual block to generate transform coefficients, wherein the simplified transform is based on a discrete cosine transform (DCT) corresponding to multiplication of coefficients of DCT basis vectors by a constant;
applying, by the at least one processor, a simplified quantization to the transform coefficients to generate quantized transform coefficients;
applying, by the at least one processor, an inverse quantization to the quantized transform coefficients to generate dequantized coefficients;
applying, by the at least one processor, an inverse simplified transform to the dequantized coefficients to generate a block of reconstructed residuals;
adding, by the at least one processor, the predicted block to the block of reconstructed residuals to generate a block of approximate reconstructed samples; and
storing, in a memory, the block of approximate reconstructed samples.