Earticle

A new near loss-less compression method for 2D game sprite animation image is presented to reducethe amount of the game contents resources. The sprite animation data in 2D mobile game occupies a largepart of the resource, and in particular the sprite animation data by using a lossless compression techniquecan cause a relatively very significant increase of data amount as the higher complexity of the animation. The new near-lossless method, which is an adaptive compression technique by considering the alpha valuefor transparency and the variance of color values of block, is proposed in order to obtain greatercompression efficiency without los of quality. By using experiments, we show that the proposed methodcompared to the PNG compression technique is good for compression efficiency, and in particular theeffect is very high in complex and dynamic 2D sprite animation.