中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共9条,第1-9条 帮助

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Effective piecewise planar modeling based on sparse 3D points and convolutional neural network 期刊论文  OAI收割
NEUROCOMPUTING, 2020, 卷号: 378, 页码: 350-363
作者:  
Wang, Wei;  Gao, Wei;  Hu, Zhanyi
  |  收藏  |  浏览/下载:35/0  |  提交时间:2020/03/30
RTSNet: Real-Time Semantic Segmentation Network for Outdoor Scenes 会议论文  OAI收割
Suzhou, China, July 29 - August 2, 2019
作者:  
Ma, Mingyu;  Zou FS(邹风山);  Xu F(徐方);  Song JL(宋吉来)
  |  收藏  |  浏览/下载:38/0  |  提交时间:2020/05/24
An over-segmentation method for single-touching Chinese handwriting with learning-based filtering 期刊论文  OAI收割
INTERNATIONAL JOURNAL ON DOCUMENT ANALYSIS AND RECOGNITION, 2014, 卷号: 17, 期号: 1, 页码: 91-104
作者:  
收藏  |  浏览/下载:39/0  |  提交时间:2015/08/12
脱机中文手写字符串切分方法研究 学位论文  OAI收割
工学博士, 中国科学院自动化研究所: 中国科学院大学, 2013
作者:  
许亮
收藏  |  浏览/下载:58/0  |  提交时间:2015/09/02
An approach for real-time recognition of online Chinese handwritten sentences 期刊论文  OAI收割
PATTERN RECOGNITION, 2012, 卷号: 45, 期号: 10, 页码: 3661-3675
作者:  
Wang, Da-Han;  Liu, Cheng-Lin;  Zhou, Xiang-Dong
收藏  |  浏览/下载:23/0  |  提交时间:2015/08/12
Multi-focus image fusion algorithm based on adaptive PCNN and wavelet transform (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Wu Z.-G.; Wang M.-J.; Han G.-L.
收藏  |  浏览/下载:75/0  |  提交时间:2013/03/25
Being an efficient method of information fusion  image fusion has been used in many fields such as machine vision  medical diagnosis  military applications and remote sensing.In this paper  Pulse Coupled Neural Network (PCNN) is introduced in this research field for its interesting properties in image processing  including segmentation  target recognition et al.  and a novel algorithm based on PCNN and Wavelet Transform for Multi-focus image fusion is proposed. First  the two original images are decomposed by wavelet transform. Then  based on the PCNN  a fusion rule in the Wavelet domain is given. This algorithm uses the wavelet coefficient in each frequency domain as the linking strength  so that its value can be chosen adaptively. Wavelet coefficients map to the range of image gray-scale. The output threshold function attenuates to minimum gray over time. Then all pixels of image get the ignition. So  the output of PCNN in each iteration time is ignition wavelet coefficients of threshold strength in different time. At this moment  the sequences of ignition of wavelet coefficients represent ignition timing of each neuron. The ignition timing of PCNN in each neuron is mapped to corresponding image gray-scale range  which is a picture of ignition timing mapping. Then it can judge the targets in the neuron are obvious features or not obvious. The fusion coefficients are decided by the compare-selection operator with the firing time gradient maps and the fusion image is reconstructed by wavelet inverse transform. Furthermore  by this algorithm  the threshold adjusting constant is estimated by appointed iteration number. Furthermore  In order to sufficient reflect order of the firing time  the threshold adjusting constant is estimated by appointed iteration number. So after the iteration achieved  each of the wavelet coefficient is activated. In order to verify the effectiveness of proposed rules  the experiments upon Multi-focus image are done. Moreover  comparative results of evaluating fusion quality are listed. The experimental results show that the method can effectively enhance the edge details and improve the spatial resolution of the image. 2011 SPIE.  
TurboPixel Segmentation Using Eigen-Images 期刊论文  OAI收割
IEEE TRANSACTIONS ON IMAGE PROCESSING, 2010, 卷号: 19, 期号: 11, 页码: 3024-3034
作者:  
Xiang, Shiming;  Pan, Chunhong;  Nie, Feiping;  Zhang, Changshui
收藏  |  浏览/下载:39/0  |  提交时间:2015/08/12
基于统计部首模型的联机手写汉字识别 学位论文  OAI收割
工学博士, 中国科学院自动化研究所: 中国科学院研究生院, 2010
作者:  
马龙龙
收藏  |  浏览/下载:61/0  |  提交时间:2015/09/02
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:64/0  |  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.