APPARATUS AND METHOD FOR LOSSLESS VIDEO CODING/DECODING

摘要

Technology relating to a lossless video encoding/decoding method and a device is disclosed. The method according to the present invention includes a step of calculating a difference value between a current pixel placed in a first pixel line according to an intra prediction direction and a previous pixel placed before the current pixel in the intra prediction direction, a step of calculating a prediction value based on a previous difference value between a previous prediction pixel corresponding to the previous pixel and the current prediction pixel corresponding to the current pixel placed in a second pixel line placed before the first pixel line in the intra prediction direction, and a step of performing entropy encoding on the difference value through the correction of the difference value performed by referring to the prediction value. [Reference numerals] (AA) Difference value A; (BB) Difference value a; (CC) Prediction block