中国科学院机构知识库网格系统: 检索

A pothole detection method based on 3d point cloud segmentation 会议论文 OAI收割
Osaka, Japan, 2020-05-19
作者: Du, Ying; Zhou, Zuofeng; Wu, Qingquan; Huang, Huimin; Xu, Mingming

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收藏 | 浏览/下载：37/0 | 提交时间：2020/08/21

Pothole Detection Extraction Plane Fitting Point Cloud Segmentation Region Growing

LSS-target detection in complex sky backgrounds 期刊论文 OAI收割
Chinese Optics, 2019, 卷号: 12, 期号: 4, 页码: 853-865
作者: Y.-F.Wu; Y.-J.Wang; H.-J.Sun; P.-X.Liu

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收藏 | 浏览/下载：16/0 | 提交时间：2020/08/24

Image segmentation,Aspect ratio,Computer vision,Curve fitting,Filling,Object detection,Object recognition,Signal detection

An Automatic Detection and Classification Method of the Splicing Abnormality in the Stellar Spectra for LAMOST 期刊论文 OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 卷号: 37, 期号: 7, 页码: 2250-2253
作者: Meng Fan-long; Pan Jing-chang; Yu Jing-jing; Wei Peng

收藏 | 浏览/下载：36/0 | 提交时间：2017/09/06

Splicing wavelengths Spectra pretreatment Segmentation fitting Deviation Abnormal grading

Accurate urban road centerline extraction from VHR imagery via multiscale segmentation and tensor voting 期刊论文 OAI收割
Neurocomputing, 2016, 期号: 205, 页码: 407-420
作者: Cheng GL(程光亮); Zhu FY(朱飞云); Xiang SM(向世明); Wang Y(王颖); Pan CH(潘春洪)

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收藏 | 浏览/下载：32/0 | 提交时间：2017/05/09

Road Centerline Extraction Multiscale Segmentation Tensor Voting Non-maximum Suppression Fitting Based Centerline Connection

Active Contour Driven by Time-Varying Fitting Energy 会议论文 OAI收割
Phoenix, Arizona, USA, 2016
作者: Wang LF(汪凌峰); Lingfeng Wang

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收藏 | 浏览/下载：29/0 | 提交时间：2016/10/20

Image Segmentation Level Set Active Contour Local Binary Fitting Cv Model

基于视觉的高压输电线路自主巡检方法研究 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, 2015
作者: 赵德政

收藏 | 浏览/下载：123/0 | 提交时间：2015/09/02

图像分割直线拟合视觉伺服巡线机器人巡线无人机 Image segmentation Straight line fitting Vision servo Inspection robot Inspection UAV

Research on automatic Hartmann test of membrane mirror (EI CONFERENCE) 会议论文 OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China
作者: Zhang P.

收藏 | 浏览/下载：41/0 | 提交时间：2013/03/25

Electrostatic membrane mirror is ultra-lightweight and easy to acquire a large diameter comparing with traditional optical elements so its development and usage is the trend of future large mirrors. In order to research the control method of the static stretching membrane mirror the surface configuration must be tested. However membrane mirror's shape is always changed by variable voltages on the electrodes and the optical properties of membrane materials using in our experiment are poor so it is difficult to test membrane mirror by interferometer and null compensator method. To solve this problem an automatic optical test procedure for membrane mirror is designed based on Hartmann screen method. The optical path includes point light source CCD camera splitter and diffuse transmittance screen. The spots' positions on the diffuse transmittance screen are pictured by CCD camera connected with computer and image segmentation and centroid solving is auto processed. The CCD camera's lens distortion is measured and fixing coefficients are given to eliminate the spots' positions recording error caused by lens distortion. To process the low sampling Hartmann test results Zernike polynomial fitting method is applied to smooth the wave front. So low frequency error of the membrane mirror can be measured then. Errors affecting the test accuracy are also analyzed in this paper. The method proposed in this paper provides a reference for surface shape detection in membrane mirror research. 2010 Copyright SPIE - The International Society for Optical Engineering.

Toward Accurate and Fast Iris Segmentation for Iris Biometrics 期刊论文 OAI收割
IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE, 2009, 卷号: 31, 期号: 9, 页码: 1670-1684
作者: He, Zhaofeng; Tan, Tieniu; Sun, Zhenan; Qiu, Xianchao

收藏 | 浏览/下载：34/0 | 提交时间：2015/08/12

Biometrics iris segmentation reflection removal eyelid localization eyelash and shadow detection edge fitting

Research on tracking approach to low-flying weak small target near the sea (EI CONFERENCE) 会议论文 OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
作者: Xue X.-C.

收藏 | 浏览/下载：39/0 | 提交时间：2013/03/25

Automatic target detection is very difficult in complicate background of sea and sky because of the clutter caused by waves and clouds nearby the sea-level line. In this paper in view of the low-flying target near the sea is always above the sea-level line we can first locate the sea-level line and neglect the image data beneath the sea-level line. Thus the noise under the sea-level line can be suppressed and the executive time of target segmentation is also much reduced. A new method is proposed which first uses neighborhood averaging method to suppress background and enhance targets so as to increase SNR and then uses the multi-point multi-layer vertical Sobel operator combined with linear least squares fitting to locate the sea-level line lastly uses the centroid tracking algorithm to detect and track the target. In the experiment high frame rate and high-resolution digital CCD camera and high performance DSP are applied. Experimental results show that this method can efficiently locate the sea-level line on various conditions of lower contrast and eliminate the negative impact of the clutter caused by waves and clouds and capture and track target real-timely and accurately.

Image processing method for vision-based measure system of robot linear trajectory 会议论文 OAI收割
3rd International Symposium on Multispectral Image Processing and Pattern Recognition, BEIJING, China, October 20-22, 2003
作者: Hao YM(郝颖明); Dong ZL(董再励); Zhou J(周静); Liu, BC; Sun, YM

收藏 | 浏览/下载：30/0 | 提交时间：2012/06/06

measure for linear trajectory image segmentation multilevel thresholds line fitting