An efficient grayscale image coding scheme based on blocktruncationcoding (BTC) is proposed. The optimal pixel grouping mechanism and the multi-grouping division process are employed in the proposed scheme. An entro...
详细信息
An efficient grayscale image coding scheme based on blocktruncationcoding (BTC) is proposed. The optimal pixel grouping mechanism and the multi-grouping division process are employed in the proposed scheme. An entropy-based indicator generation mechanism is employed to generate the block indicators of different groups. In addition, an optional bit rate reduction mechanism for dynamic block division is designed. Simulation results verify that significant image quality gain is acquired by the proposed scheme compared to the state-of-art image coding methods based on BTC. Meanwhile, a lower bit rate is consumed by the proposed scheme.
暂无评论