重构图象 meaning in Chinese
reconstructed image
Examples
- At the same time , the main advantage of the encoding method , which can allow a target bit rate to be met exactly , is that the encoder can stop encoding at any point
另外，本方案还有一个明显的优点就是可以在任意一点结束编解码，从而可以根据对重构图象质量的要求动态调整压缩比。 - 2 ) the embedded zero - tree wavelet algorithm , which is proposed by shapiro , is analyzed . regarding to its shortcomings , a new quantization method based on zero - tree is presented . in addition , this method needs to match the hvs characteristics
2 )仔细分析了shapiro的嵌入式零树编码算法，根据其在量化过程中存在的问题，提出了一种改进的零树量化算法，并在量化过程中充分考虑了人的视觉特性对于重构图象质量的影响。 - The thesis reviews the theory which is the basis of synthetic aperture processing and introduces five algorithms of image reconstruction : the coherent addition provides a good opportunity for the real time sas ; the envelope processing can work when sonar echo returns lack phase coherence ; the i - q processing can reduce the sampling rate ; the broadband and ctfm processing are both aimed to increase the sas mapping rate
讨论了用于重构图象的五种算法，包括简单的可进行实时处理的相关合成法，可以在缺乏相位信息时使用的包络处理法，可以降低采样率、减少运算量、存储量的正交处理法，可以提高声纳运行速度，从而提高成象率的宽带处理法和ctfm法等五种算法。 - Through anatomizing ezw coding algorithm and taking the effects of human being ’ s vision characteristics on quality of reconstituting image . a improved zeretrees algorithm are put forward . at last a new image compression encoding algorithm based on wavelet transform and vector quantization is put forward . the experiment show , in very low bit rate , using the proposed algorithm , the reconstructed image is superior to that of ezw in both of perception and psnr
最后,在小波树的基础上,通过对矢量量化的研究,本文提出了一种基于四叉树结构新的小波树矢量量化压缩编码算法,实验证明,在较高压缩比的情况下,使用此方法得到的重构图象质量(视觉效果和峰值信噪比)比通常的小波压缩算法有了较大的提高。 - Thus the coding of a color head image actually become the coding of a color component . the experimental results show this method not only improve the coding efficient and compression ratio but also obtain satisfactory effect of the reconstructed image . at the same time , this method also enables gray head images to be converted into color head images
这样对彩色人头图象的编码实质上就变成了对其中的一个色彩分量的编码，实验结果表明该方法不仅提高了编码效率和压缩比，也能获得较满意的重构图象效果，同时还使得将灰度人头图象转换成彩色人头图象成为可能。