The present disclosure relates to a method for reordering data organized according to a matrix configuration, comprising steps of reading line by line input data having a matrix configuration to obtain an input data flow, and of processing a line of the input data involving: transferring into an output data flow a datum of the input data flow, belonging to the processed line, and transferring into the output data flow at least one datum of the input data flow stored beforehand, belonging to a previous line and having a same rank in the matrix configuration as the datum transferred from the processed line, and storing a datum of the input data flow belonging to the processed line and not transferred into the output data flow, to replace the transferred datum, belonging to a previous line.