DEVICE AND METHOD FOR COMPETITION-BASED INTRA PREDICTION ENCODING/DECODING USING MULTIPLE PREDICTION FILTERS

摘要

Disclosed are a device and a method for competition-based intra prediction encoding/decoding using multiple prediction filters. The device for intra prediction encoding, according to one embodiment of the present invention, comprises: an optimal filter selection unit, having a plurality of extrapolation prediction filter candidates which filter peripheral pixels around current blocks based on the intra-prediction direction or the mode of each of the current blocks to be encoded, for selecting the filter involving the lowest encoding cost among the plurality of extrapolation prediction filter candidates; a remaining signal generation unit for generating the extrapolation prediction value of the current blocks using the filter selected by the optimal filter selection unit, and for generating remaining signals by calculating the difference between the extrapolation prediction value and the pixel value of the current blocks; a transformation and quantization unit for transforming and quantizing the remaining signals generated by the remaining signal generation unit; and an entropy encoding unit for entropy-encoding the transformed and quantized remaining signals.