Patent ID: 8983185
Filing Date: 2015-03-17
Classification: G06T,H04N

Abstract:
1. A method of compressing an image to be stored in a memory to satisfy a memory requirement, executed by at least one processor, said method comprising the steps of: determining a size of a region in the image, the region having a uniform colour; obtaining candidate values of a region size threshold; comparing the determined size of the region with at least one of the candidate values of the region size threshold; estimating data amounts to encode edges constituting the region which satisfy the at least one of the candidate values of the region size threshold; selecting a value from the candidate values as the region size threshold based on the comparison between the estimated data amounts and the memory requirement; compressing losslessly edges constituting the region which satisfy the selected value of the region size threshold; and compressing lossily image data in a region other than the region to be compressed losslessly.