The present invention concerns the manipulation and especially the
filtering of image data in the compressed domain. A method and a device
is provided which allows for manipulating image data in the compressed
domain transformed from image data in the spatial domain with the help of
a wavelet-based transform algorithm. The advantage of the inventive
concept is to accelerate the filtering in time, such that underlying
constraints in device computational power, storage, memory, and
electrical power consumption are applicable for image
manipulation/filtering.