PROCÉDÉ ET DISPOSITIF POUR LA GÉNÉRATION DE MÉTADONNÉES COMPRENANT DES INFORMATIONS DE CARACTÉRISTIQUES DE FRÉQUENCES D'IMAGE

摘要

Provided are a method and device for generating metadata including frequency characteristic information of an image. Pixel values of a current block among blocks divided from the image are converted into frequency coefficients in the frequency domain. A band value of a frequency band corresponding to each of regions of the current block is determined using the frequency coefficients included in the regions of the current block, the regions of the current block being divided to correspond to different frequency bands. Metadata including the frequency characteristic information of the current block is generated based on the determined band values.