Method and Device for Processing Input Image Data

A method for processing input image data by an image processing device, to achieve a desired visual effect within an output image, wherein input image data are stored within an input memory device comprising at least one input buffer and being at least partly located within an external storage device, the external storage device being located at least one of externally to or physically separated from an image processing unit of the image processing device and the input image data are transferred based on data of a lookup table into respective output image data stored within an output memory device, wherein when reading data out of a respective cell of the input buffer a restricted block of data is copied into and/or cached in an internal storage device, wherein read/write operations of the image processing unit are performed faster with the internal storage device than with the external storage device, the lookup table being generated based on at least one data remapping function to achieve the desired visual effect, and wherein the entries are arranged within the lookup table in such a way that when processing the lookup table by reading the table entry-by-entry the input memory device is addressed in a sequential reading order, such that the entries of the lookup table are sorted in one of an ascending and a descending order of an input memory address field identifying a memory address in the input buffer thereby accessing input image data in the order as they are stored in the input buffer and in the internal storage device.