An Experimental Study on the 3-Dimensional TAT System for High-Resolution Pictures

进行了图像序列存储，构建了图像序列分段数据压缩的计算机仿真系统。利用该仿真系统，提出了一种三维TAT（3-D TAT）系统的新算法。实现了该算法的三维TAT系统。所构建的三维TAT系统硬件结构简单；例如，编码器只有大约10,000个门。成功地演示了高分辨率图像信号的压缩。三维TAT系统的帧间插值方式大大提高了静止图像的质量；重建后的图像与原始图像没有差异。三维TAT算法为运动图像选择帧间插值方式，并能很好地重建运动图像。三维TAT系统对场景变化的响应速度快。当图像从一个静止场景切换到另一个静止场景时，帧间插值块的数量在场景切换后的第一帧减少，然后在4帧左右迅速增加，达到稳定状态。因此，采用新算法的三维TAT系统对于高分辨率图像的压缩是非常有效的。

An image-sequence storage was made and a computer simulation system for the data compression of image sequences sects constructed. A new algorithm of the 3-dimensional TAT(3-D TAT) system was developed by using the simulation system. The 3-D TAT system of the algorithm was implemented. The hardware of the constructed 3-D TAT system is very simple; for example, the encoder has about 10,000 gates only. The compression of high-resolution picture signals was successfully demonstrated. The interframe interpolation mode of the 3-D TAT system greatly improves still picture quality; no difference was observed between the reconstructed and original pictures. The 3-D TAT algorithm selects the interframe interpolation mode for moving pictures and reconstructs them very well. The 3-D TAT system has fast response to the scene change. When the picture is switched from one still scene to another still scene, the number of the interframe interpolation blocks decreases in the first frame after the scene change, and then increases rapidly reaching the steady, state in about 4 frames. Thus, the 3-D TAT system employing the new algorithm is very effective for the compression of high-resolution pictures.