基于物理真实的有损压缩往往伴随有VOP结构形变，导致重构图像质量下降。
The physical validity based lossy compression algorithms are usually accompanied with VOP structural distortion, leading to the degradation of the reconstructed image quality.
CDF9/7定点实现方法虽可以解决上述问题，但存在恢复图像质量下降的缺点。
The existed fixedpoint implementation methods of CDF9/7 can solve the problem of computation and storage, but they degrade the quality of the reconstructed image.
虽然大多数监控系统都采用序列图像压缩，但是在窄带传输中，序列图像压缩方法会出现图像质量下降和马赛克等现象。
In the spite of use of sequence image compression coding in most monitor system, such problem as the image quality degradation, Mosaic will appear in the narrow band.
对测试图像序列进行测试的结果表明，该方案能明显降低编码复杂度，而编码质量只有轻微的下降。
For concerned test image sequences, the proposed algorithm can reduceencoder complexity significantly while coding quality is only slightly decreased.
佐藤：如果有任何一点电信号残存在象素中，那么图像质量将会下降。
Sato: If any electrical signal remains in a pixel, image quality will be reduced.
目前普遍采用的插值重建等方法存在重建后图像的主观视觉质量明显下降的不足。
In general, the widely used interpolation method has some limitations such as low subjective quality of the reconstructed image.
通过对图像格式的比较，说明在数字电视节目制作中数据处理对图像质量的影响，从而更好地避免格式转换过程中图像质量的下降。
By the comparison of picture patterns, this thesis states the affect of data solution to the picture quality so as to avoid the fall-down of picture quality during the period of pattern changes.
针对在较高误码率条件下JPEG2000图像传输质量急剧下降的缺陷，引入RS编码进行差错控制。
The quality of JPEG2000 image is seriously degraded when the bit error rate becomes rather high, so RS coding is added in the system for error control.
同时，该算法的图像质量要好于DS算法，和PMVFAST算法相比只有较小的下降。
Moreover, the proposed algorithm achieves better quality performance than DS algorithm and only a little degradation as compared to PMVFAST.
该方法可以计算任何形式的图像运动导致的成像质量的下降，而且可以很方便地应用到一维运动的情况。
This method can be used to calculate the degradation of image quality as a result of any kind of image motion in the image plane, and easily used in the case of one dimensional motion.
其局限性是，图像质量会下降，因为观众每只眼所看图像的分辨率只有显示屏标准分辨率的一半。眼睛不正对着屏幕时，立体视觉效果依然会受到限制。
It has limitations. Image quality is reduced, since each eye is presented with half of a display's resolution . And viewing angles are still limited .
而直接扫描冠状面图像质量无明显下降（P>0·05）；
Meanwhile there was no significant difference of image quality between the two mA in coronal direct scan (P>0.05).
提出了稳健性好的图像盲水印算法：白色像素较多的图像加入水印后会产生大量溢出误差，从而很难将水印提取出来或者对图像质量造成严重下降。
Valid Blind Watermarking Algorithm On Image The images that have a lot of white pixels usually can produce a lot of overflows after being embedded the watermark.
实验结果表明，本文提出的新算法在重建图像质量没有明显下降的前提下，编码速度有了显著提高。
Experimental results show that the algorithm can increase the encoding speed significantly with negligible PSNR drop and bit-rate increase.
视频空间分辨率下变换转换编码过程的运算量较大，受实时性、输出码率的限制，转换后的图像质量会有一定程度的下降。
Video transcoding for reduced spatial resolution needs a lot of computation. Restricted by real-time demand, the quality of transcoded stream will decrease in variant degree.
视频空间分辨率下变换转换编码过程的运算量较大，受实时性、输出码率的限制，转换后的图像质量会有一定程度的下降。
Video transcoding for reduced spatial resolution needs a lot of computation. Restricted by real-time demand, the quality of transcoded stream will decrease in variant degree.
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