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O型口蹄疫病毒衣壳蛋白VP1的可溶表达及抗原活性鉴定 期刊论文  OAI收割
过程工程学报, 2023, 卷号: 23, 期号: 3, 页码: 472
作者:  
王闰年;  张纯;  吴佳奇;  张耀;  张宇翔
  |  收藏  |  浏览/下载:0/0  |  提交时间:2023/06/21
The incidence and risk factors of acute radiation-induced dermatitis in gynecologic malignancies treated with intensity-modulated radiation therapy 期刊论文  OAI收割
TRANSLATIONAL CANCER RESEARCH, 2020, 卷号: 9
作者:  
Fu, Zhiqin;  Wang, Conghui;  Chen, Jianhong
  |  收藏  |  浏览/下载:48/0  |  提交时间:2020/12/28
Analysis of mixtures of fatty acids and fatty alcohols in fermentation broth 期刊论文  OAI收割
JOURNAL OF CHROMATOGRAPHY A, 2014, 卷号: 1323, 期号: 3, 页码: 66-72
作者:  
Liu, Yilan;  Chen, Ting;  Yang, Maohua
收藏  |  浏览/下载:50/0  |  提交时间:2014/05/06
The Role of Tip Leakage Flow in Triggering Rotating Stall of a Low Speed Compressor under Inlet Distortion 期刊论文  OAI收割
JOURNAL OF THERMAL SCIENCE, 2009, 卷号: 18, 期号: 1, 页码: 33-39
作者:  
Zhang, Jingxuan;  Lin, Feng;  Chen, Jingyi;  Nie, Chaoqun
收藏  |  浏览/下载:43/0  |  提交时间:2015/12/18
A new spaceborne compression approach for remote sensing imagery (EI CONFERENCE) 会议论文  OAI收割
ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Xu S.
收藏  |  浏览/下载:45/0  |  提交时间:2013/03/25
After analyzing advantages and disadvantages of these typical encoding methods: SPIHT and VQ  a "DWT+MRLE" approach for spaceborne data compression was proposed in this paper. This approach includes two steps: Discrete Wavelet Transform (DWT) and Modified Run Length Encoding (MRLE). The former used CDF9/7 biorthogonal wavelet filters to powerfully get rid of correlation between pixels in imagery. The later put enlightening information into the lowest bit of some key-position transform coefficients. Consequently  CDF9/7 and MRLE together make hardware platform remain high real-time capability  and help reconstructed images keep good fidelity with PSNR being about 40dB  compared with the original ones. Comparison between experimentations on SPOT4's low-spatial-resolution (10m) imagery and Ikonos2's high-spatial-resolution (1m) imagery  shows this "DWT+MRLE" method having better performance for remote-sensed imagery  especially those of higher resolution. Although inferior to 8:1  Compression Ration (CR) here near 5:1 is greater than France SPOT5's 3:1 and American Ikonos2's 11:2.6 on-board data compression. More important  this method having less computational amount is good for spaceborne capability of real time. The consumed time of different image size is also presented in this paper  based on TI TMSC6416 DSP chip with 600MHz CPU cycle clock.  
A new segmentation method of CR images based on discrete wavelet transform and mathematics morphology (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Li Z.;  Li Z.
收藏  |  浏览/下载:150/0  |  提交时间:2013/03/25
In this paper  we propose a segmentation method of CR(computed radiography) images with being rid of under-segmentation and over-segmentation. An under-segmentation occurs when pixels belonging to different objects are grouped into a single region. Such errors are the most dangerous because they can invalidate the whole segmentation process. The phenomenon always takes place when we segment CR images because of the principle of CR. In order to depressed under-segmentation  we enhance the CR images using DWT (discrete wavelet transform) to get more detail of CR image features. As we enhance the CR image  the over-segmentation maybe occurs. Compared with under-segmentation  the over-segmentation occurs when a single objects is subdivided by segmentation into several region. For the purpose of preventing from the over-segmentation  we present a scheme for enhanced CR images based on watershed algorithm that solves over-segmentation problem. We use marker-based watershed algorithm. Together with gradient image and marker image  watershed segmentation can make sure to partition CR image into meaningful object and avoid further segmentation of homogeneous regions. The result of the proposed algorithm are compared with those of other standard methods. Experiments have shown a better result and indeed solved under-segmentation and over-segmentation problems.