Method for processing images and the corresponding electronic device

Electronic device for processing at least one image, a block being a portion of the image, a grey level being associated to each pixel of the image, the device comprising:

• a memory storing a plurality of texture pattern blocks representative of a typical texture of the image, the pixel grey levels of each texture pattern block being transformed into frequency coefficients using a predefined transform;
• at least a first selection unit for selecting one after another current block in the image;
• at least one computation unit adapted to transform the pixel grey levels of the current block into frequency coefficients using the predefined transform;
• at least one builder unit able to build up a merger block for each stored texture pattern block, whereby a plurality of merger blocks is obtained, each frequency coefficient positioned at a defined place of each respective merger block being equal to the frequency coefficient positioned at the same place of the current block, when said frequency coefficient of the current block complies with a criterion;
• or to the frequency coefficient positioned at the same place of the corresponding texture pattern block among the texture pattern blocks stored in the memory, when said frequency coefficient of the current block does not comply with said criterion;
• at least a second selection unit for selecting a merger block among the plurality of merger blocks, wherein for each merger block a predefined function is computed to obtain a variation value representative of the frequency similarity between the current block and each merger block's corresponding texture pattern block, and a grey level gradient between the current block and at least one block adjacent to the current block is computed, and the merger block having the smallest value is selected;
• and
• at least one computation unit adapted to transform the frequency coefficients of the merger block selected into grey levels using a transform inverse of the predefined transform;
• the first selection unit being adapted to replace in the image the current block by the selected merger block.