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图像压缩

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Effective encoding technologies to obliterate redundance and retain the image quality are the focus of research.

采用有效的压缩编码技术删除冗余,以尽量少的比特数存储图像,并同时保证图像的质量,己成为研究的热点。

The bad thing is that the DXT compression formulas for color images used in DirectX favors only the green channel (usual 30%, 59%, 11% formular), the blue/z channel isn't that important (especially if we renormalize later), but the image quality can be improved by preserving the red channel better.

坏的是,在使用DirectX的彩色图像DXT压缩公式主张只有绿色通道(通常30%,59%,11%公式),蓝/?通道并不重要(尤其是如果我们归一化后),但图像质量可以改善红色通道保存较好。

The feasible number of the first classification and the appropriate pattern of recoding can be used in the process of grassland desertification remotesensing monitoring in Inner Mongolia.·-Renverse principal component analysis is a kind of technique to decrease correlation and stand out the useful information.

主成分变换一逆变换处理是是一种数据压缩和去相关技术,主要目的就是把原来多波段图像中的有用信息集中到数目尽可能少的新的主成分图像中,并使这些主成分互不相关,从而突出有效信息。

This system gathers, compresses, and stores the video image in real time to different speed and...

该系统将不同车速和车况下的视频图像进行实时采集、压缩、和存储,实现了汽车运行视频图像的实时存储功能。

The decompressed images reserve most of details on the images resulted from raw data.

解压缩数据生成的图像可以清晰地保留图像中的细节信息。

Experimental results show that this method can obtain a higher compression ratio for color video and achieve higher qualities of decompressed images.

同样,从实验结果中可以看出在彩色空间上采用该方法能进一步地提高图像的压缩比和图像解压后的质量。

The valid gray grads are equipoised. This algorithm conquers the gray discontinuity and drop. This algorithm has achieved the elimination of gray redundancy and the improvement of image quality.

该算法在压缩灰度冗余的同时,进行直方图均衡,克服了传统直方图方法在图像增强时造成的灰度断层和丢失,提高了图像质量。

Our scheme first selects the image array we need urgently, and then applies a lifting-based 3D wavelet transform on the selected image array, and finally quantizes different bands with different precisions and entropy codes for each band.

本文首先对图像序列进行&滑动窗口&的选帧,然后对图像序列进行基于整数提升的三维小波变换,最后利用嵌入式零树小波编码对小波系数进行量化编码,从而实现对IBR场景数据的压缩。

Experiments proves that this algorithm not only give attention to the intensity of embedding watermarking but also guarantee the quality of image combining with human visual system better, and it has good robust under the image processing attacks such as cutting, filter, smoothing, sharping, and JPEG compression etc.

实验结果证明,本文算法兼顾了嵌入水印强度的同时更好的保证了图像质量,不仅能很好的结合人眼视觉系统,且对一般的图像处理如剪切、滤波、平滑、锐化和JPEG压缩,都具有较好的鲁棒性。

According to this, the author applied wavelet transform to image restoration, enhancement, encoding, edge detection of the ultrasonic imaging well logging, and to attitude computation of tilted fracture and bed plane from well logging image.

在此基础上,将小波变换应用于超声成像测井图像恢复、图像增强、数据压缩编码、边缘检测以及倾斜裂缝和层面产状计算中。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

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