VERFAHREN UND SYSTEM ZUR MESSUNG VON VIDEOBILDVERSCHLECHTERUNG, HERVORGERUFEN DURCH KODIERUNG ZUR BITRATENREDUKTION

摘要

The process involves dividing coding of a coded image into blocks. A grid of coding is shifted with respect to the image to define a decomposition of the image in blocks of analysis covering each boundary between two adjacent blocks. A transformation calculation is applied to the data of pixels of the image coding using grid and pixels that are extracted from transformed coefficients for each block of analysis. An Independent claim is also included for a system for measuring degradations in a digital image.