图像压缩

The quality of a compressed image is directly related to its value in practice.

1引言遥感图像压缩技术是图像处理研究领域的一个前沿课题。

It studies the algorithm for image enhancing and compressing.

研究了数字图像的增强算法及图像压缩算法。

It researches that it's better to choose the algorithm based on discrete cosine transform coding in the image compression.

研究表明，选择基于离散余弦变换编码的数据压缩算法来进行图像压缩时的性能比较好。

Finally, it gives image processing of image compression and image decompression based on wavelet conversion code.

最后，给出了基于小波变换编码的图像压缩/解压的图像处理。

The compression ratio of high fidelity image compression is raised well by this algorithm.

利用该算法较好地提高了高保真的有损图像压缩的压缩比。

We research the algorithm of scalar quantization which fits the human visual model, and present tree character plane coding and duplicate tree coding algorithm.

在量化方面，进行了结合人眼视觉特性的标量量化方法的研究，提出了小波图像压缩的树特征平面编码及其优化算法——二重树编码算法，取得了很好的压缩效果。

Experimental reault shows that, the compression algorithm has a primely compression performace compared with other compression algorithms present recently.

实验表明，与目前研究的其它超光谱图像压缩算法相比，该算法有着很好的压缩性能。

The common methods of wavelet transform incudes the best wavelet packet-based method, embedded wavelet prediction coding ,wavelet zero-tree compression factor, and so on.

常见的基于小波变换的图像压缩方法有小波包最好基、嵌入式小波预测编码和小波系数零树压缩等。

We separatedly use the haar and improved haar in image compression and give the contrast experiment result, which indicates that the latter has a better compression effect.

本文将haar小波和增加消失矩后的haar小波分别用于图像压缩，并给出了对比实验分析结果，表明后者有更好的压缩效果。

Conventional video compression algorithms have higher compressibility, but the output code stream still needs recoding. A selfadapting arithmetic encoder was required in practical application to produce a final code stream, which can eliminate redundancy in binary code stream to obtain higher encode efficiency. QM arithmetic encoder is a high efficiency encoder designed for the simplicity and speed.

传统的图像压缩算法有较高的压缩码率，但生成的码流仍需要再次编码，实际使用中需要通过一个自适应的算术编码器才能生成最终的码流，以消除二进制码流中的冗余，得到更高的编码效率。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。