Method intra prediction video coding and decoding method, its device, program and program means recorded

A method of video coding using intra prediction, the method comprising the steps of: * setting candidates for reference pixels to pixels already coded within a range of distance SEMIDE from a block encoding target and is determined according to the value of a parameter indicating laaproximacion quantization; * generate predicted signals, wherein this step includes: - sequentially selecting reference pixels used for the intra prediction of the target block decoding among the candidates for reference pixels while changing a condition of queindica distance a measured distance from the encoding target block to the candidate reference pixel, inwhich the pixels selected reference include at least one of: a set of already coded pixels which form a reference line the upper side of the target decoding block and have a distance measured from the top edge of the encoding target where Lalinea line of reference block is greater or equal to the width of the encoding target block length, anda set of already encoded pixels which form a reference line on the left side of decoding target block, and have a measured distance from the left edge of the encoding target, where reference Lalinea formed block has a length equal or greater than the height of the encoding target block; y- generating each predicted signals based on the pixels selected for cadacondicion reference distance; * calculate an encoding cost required for subjecting the encoding target block to intra coding porprediccion using each generated predicted signal; * determine finally the reference pixels used for the intra prediction of the target cost of each codificacionbasandose calculated coding block; and * encode information indicating the position of the pixels have been determined.