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     The paper picks out 15 special patches in the Bohai Sea for analysis from 22 NOAA AVHRR images (from 1992 to 1994).
     利用NOAA卫星AVHRR图像(使用1992~1994年共22幅图像)选取渤海中的15个特征区域进行分析。
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     Methods: With Medicid-03E brain evoked potential instnnnent of Neuronic Compeany, the latency and the amplitude of P3 evoked by vistal (image) and auditory stimuli were recorded in 168 patient with closed head injury and compared with nounal subjects, 54 cases of the patients were re-examined Results: The P3 latercy in patient group was significantly prolonged as compared with the control group (P<0.001), but the amplitude was decreased.
     方法:应用Medicid-03E脑诱发电位仪测定168例闭合性颅脑外伤患者的视觉(图像)、听觉诱发的P3波之潜伏期和波幅,并与正常对照组作比较,54例患者进行复测比较。 结果:病人组P3潜伏期较正常对照组明显延长(P<0.001),波幅降低;
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     The functions of this system are as follows:①image input,which can be used in CT, X-ray,electron microscopy photo graphy etc;
     包括硬件和软件系统。 该系统具有如下功能:①图像输入(能输入CT、X光片、电镜照片等图像)
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     In this paper,a new image compression coding algorithm based on Self-Organizing neural network,VQ+DPCM+DCT algorithm,is proposed. Experiment results show that the compression ratio is 31.8∶1,the PSNR is 35. 82dB(Lenna luminance image),and subjective image quality is very good.
     本文提出了一种基于自组织特征映射神经网络的图像压缩编码算法,即VQ+DPCM+DCT算法,实验表明,在压缩比为31.8∶1时,其峰峰信噪比为35.82dB(Lenna亮度图像),且主观效果良好,这是至今为止使用矢量量化(VQ)方法压缩图像所获得的最好结果。
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     Graphics and image edition is always a difficulty of scientific journal typesetting.
     图形(图像)的编辑一直是科技期刊排版的1个难点.针对“电脑稿”,提出了4种转图的方法,并进行了效果比较;
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     Image Compression Technologies
     图像压缩技术
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     Image Compression Method
     图像压缩技术
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     (4) Image rectification.
     (4图像校正。
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  image)
Using these monomial bases we prove that the image of the transfer for a general linear group over a finite field is a principal ideal in the ring of invariants.
      
It is injective and its image coincides with the set ofEx-fixed points inI.
      
A pattern for an element of a Weyl group is its image under a combinatorially defined map to a subgroup generated by reflections.
      
The Discrete Wavelet Transform (DWT) is of considerable practical use in image and signal processing applications.
      
Among all image transforms, the classical (Euclidean) Fourier transform has had the widest range of applications in image processing.
      
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This paper describes an application of image holographic method to the photoelastic stress analysis. The results of experimental and theoretical study indicate that the unpolarized light from He-Ne laser is equivalent to circular polarized light. Using this method, isopachic fractional fringe orders can be measured with compensator, and the parallax and drift of fringe pattern can be eliminated. The image of inter-fero-stress Pattern will appear on holographic plate when illuminated by white light. The photographic...

This paper describes an application of image holographic method to the photoelastic stress analysis. The results of experimental and theoretical study indicate that the unpolarized light from He-Ne laser is equivalent to circular polarized light. Using this method, isopachic fractional fringe orders can be measured with compensator, and the parallax and drift of fringe pattern can be eliminated. The image of inter-fero-stress Pattern will appear on holographic plate when illuminated by white light. The photographic images of the stress distributions obtained by this method from models of turbine blade roots and a cover of bearing are presented.

本文介绍了图像全息法在光弹性应力分析中的应用。实验和理论研究的结果都说明由氦 氖气体激光器发出的非偏振光是和圆偏振光等效的。用这个方法,可以通过补偿器测定等和 线分数条纹,可以消除条纹图案的视差和浮动,全息底板可以用白光照明再现干涉应力图 像。本文给出了用实验方法测定的汽轮机叶片根部和轴承瓦盖模型的应力分布。

In this article a method incorporating the information yielded by high resolution electron micrographs and the corresponding electron diffraction patterns is proposed for the determination of crystal structures. Using this method it is possible to solve the problem of extracting structure amplitude moduli from electron diffraction data and also to solve the phase problem that commonly occurs in diffraction analysis. The resolution of the structure image so obtained may be higher than that of the original electron...

In this article a method incorporating the information yielded by high resolution electron micrographs and the corresponding electron diffraction patterns is proposed for the determination of crystal structures. Using this method it is possible to solve the problem of extracting structure amplitude moduli from electron diffraction data and also to solve the phase problem that commonly occurs in diffraction analysis. The resolution of the structure image so obtained may be higher than that of the original electron micrographs and may approach the diffraction limit.

本文提出一个把高分辨电子显微图和相应的选区电子衍射图结合起来以测定晶体结构的方法。此法可解决从电子衍射数据求解结构振幅绝对值的问题,亦可解决各种衍射分析所共有的相角问题。所得结构图像的分辨本领将优于电子显微图,而有可能接近于衍射分辨极限。

The mathematical expression of character picturs has been given and their Fourier transformation or spatial frequency spectrum obtained. Then, after sampling the spectrum, we have drawn the binary hologram. The accuracy of the method is high and the amount of calculation is much less than the discrete Fourier transformation. By using this method we take only 30X30 sampling points for "E" and 60X60 for "", their images have thus been reproduced sharply.

写出了文字图像的数学函数,并求出其付里叶变换,得其频谱,在频域中采样后绘出双元全息图.此法精度高,较一般离散付里叶变换法(D.F.T.)的计算量大为减少,用本方法对“E”字图像仅需30×30个样点,“中国”二字仅需60×60个样点即可提出清晰图像

 
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