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在研究视觉阈值效应和视觉掩盖效应的基础上 ,提出了一个符合人眼视觉特征的失真判断准则 ,并将其应用到H .2 6 3视频编码中 ,以达到提高编码速度的目的。实验结果表明 ,这种基于人眼视觉特性的失真判断方法能在保证恢复图像主观质量和压缩效率的前提下 ,有效地提高编码速度。
On the basis of studying the visual threshold effect and the visual masking effect, a distortion criterion that meets the human visual characteristics is proposed and applied to H.264 video coding in order to improve the coding speed. The experimental results show that this method based on human visual features can effectively improve the encoding speed under the premise of ensuring the subjective quality and compression efficiency of the restored image.