Image processing

A method of decoding an image represented by multiple compressed blocks stored in a memory, said method comprising the steps of:

• fetching a compressed block from said memory;
• decompressing said compressed block to get multiple property values;
• assigning said multiple property values to a pixel block (30A) and at least one other pixel block (30B-30D) being encompassed together with said pixel block (30A) in a superblock;
• decoding said image based on at least one property value of said pixel block (30A) and at least one property value of said other pixel block (30B-30D).

An image compressor for compressing an image comprising multiple pixels having property values, said image compressor comprises:

• an image decomposer for decomposing said image into multiple superblocks, where a superblock encompasses N pixel blocks (30A-30D, 32A-32D) of multiple pixels and N is an integer equal to or larger than two;
• a fixed rate compressor for fixed rate compressing, for at least a superblock of said multiple superblocks, property values of said superblock to get a compressed block having a target bit length;
• and
• a memory assigner for assigning said compressed block to memory locations of a memory and being assigned for said N pixel blocks (30A-30D) encompassed by said superblock to get N copies of said compressed block in said memory locations, wherein said N copies of said compressed block collectively constitute a compressed representation of said superblock.

An image decoder for decoding an image, said image decoder comprises:

• a memory accessor for fetching a compressed block from a memory storing multiple compressed blocks representing said image;
• a decompressor for decompressing said compressed block to get multiple property values;
• a value assigner for assigning said multiple property values to a pixel block (30A) and at least one other pixel block (30B-30D) being encompassed together with said pixel block (30A) in a superblock;
• a pixel decoder for decoding said image based on at least one property value of said pixel block (30A) and at least one property value of said other pixel block (30B-30D).