CONTROLLING SPEED OF SCALABLE CODED IMAGES Russian patent published in 2010 - IPC H04N7/26 G06T5/00 

FIELD: information technology.

SUBSTANCE: subsets are determined (step 29), each containing one or more coding units, where at least one image puts at least one coding unit into two or more subsets, the list of requirements (LOR) is established (step 30) containing at least one element associated with each subset. Significance values are use in order to select quality increments for generating an allowable code stream which satisfies the LOR for subsets (steps 34, 36). Quality increments can be selected so as to attain high quality for different subsets depending on size requirements in the LOR. For certain requirements, the code stream will exhibit an approximately constant quality of the reconstructed image. Quality increments can be selected so as to achieve small sizes of a compressed image for different subsets depending on quality requirements in the LOR.

EFFECT: high quality of the reconstructed image.

27 cl, 7 dwg