Method and apparatus for encoding/decoding image data

Several attempts have been tried to improve the performance of intra-prediction in video encoding and decoding, which are targeting at pixel level parallelization. However, the prior art methods provide no solution for implementing an improved intra-prediction method on a parallel processing platform. The present invention uses estimated predictors instead of reconstructed exact predictors. This enables faster estimation of predictors, and allows an encoder to perform intra-prediction for all blocks of at least a portion of an image simultaneously. A method for encoding image data, a device for encoding image data, a method for decoding image data and a device for decoding image data are disclosed.