中国科学院机构知识库网格系统: 检索

Rail Detection Based on LSD and the Least Square Curve Fitting 期刊论文 OAI收割
International Journal of Automation and Computing, 2021, 卷号: 18, 期号: 1, 页码: 85-95
作者: Yun-Shui Zheng; Yan-Wei Jin

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收藏 | 浏览/下载：24/0 | 提交时间：2021/02/23

Rail inspection line segment detector (LSD) algorithm the least square curve fitting foreign object detection

Feature-Related Searching Control Model for Curve Detection 期刊论文 OAI收割
IEEE Transactions on Cybernetics, 2019, 卷号: 49, 期号: 2, 页码: 580-591
作者: Zhang MY(张茗奕); Xilong Liu; De Xu; Zhiqiang Cao

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收藏 | 浏览/下载：53/0 | 提交时间：2019/05/08

Curve Detection Feature Description Prediction Searching Searching Control Mode Updating

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：14/0 | 提交时间：2020/08/24

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

Corner detection using Gabor filters 期刊论文 OAI收割
iet image processing, 2014, 卷号: 8, 期号: 11, 页码: 639-646
作者: Zhang, Wei-Chuan; Wang, Fu-Ping; Zhu, Lei; Zhou, Zuo-Feng

收藏 | 浏览/下载：51/0 | 提交时间：2015/03/19

edge detection Gabor filters grey systems affine transforms Gabor filter contour-based corner detection magnitude response edge contour shape analysis local curvature maxima points planar curve corresponding grey-variation information Canny edge detector normalised magnitude response magnitude response threshold angle threshold detection accuracy localisation accuracy afflne transform noise-robustness

The linear detection of glass feet billet based on Sobel (EI CONFERENCE) 会议论文 OAI收割
2012 International Conference on Computer Science and Information Processing, CSIP 2012, August 24, 2012 - August 26, 2012, Xi'an, Shaanxi, China
作者: Li Y.; Li Y.; Li Y.; Li Y.

收藏 | 浏览/下载：30/0 | 提交时间：2013/03/25

In the process of producing glass feet billet how to detect the qualification of the products has became an important part. For this situation this paper designs a detection system of the linear of glass feet billet. In this system first make Sobel edge detection to the images from the camera. Then this paper proposes a dynamic threshold segmentation method this method can draw the upper edge curve of the glass feet billet quickly and accurately. This method can detect the qualification of the products very accurate. This system has been successfully applied to the products site. 2012 IEEE.

Fingerprint Singular Point Detection Based on Multiple-Scale Orientation Entropy 期刊论文 OAI收割
IEEE SIGNAL PROCESSING LETTERS, 2011, 卷号: 18, 期号: 11, 页码: 679-682
作者: Chen, Hongtao; Pang, Liaojun; Liang, Jimin; Liu, Eryun; Tian, Jie

收藏 | 浏览/下载：37/0 | 提交时间：2015/08/12

Entropy multiple-scale analysis orientation field orientation field flow curve singular point detection

The Research of real time auto-recognition of the moire fringe (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
Wang M.-J.; Wu Z.-G.

收藏 | 浏览/下载：19/0 | 提交时间：2013/03/25

Measuring the movement of raster by the method of moire fringe has the advantage of high sensitivity high resolution and non-contacted measurement. The characteristic of moire fringe is that the image is white alternate with black the angle of the stripes is uniform the width of the stripes is uniform the terminators of the stripes aren't clear. A fast method that can figure out the width and angle of the moire fringe precisely is put forward in this paper. It calculates the angle the stripes firstly. According to the principle of the minimum mean squared error (MMSE) the closer a series of data is the smaller the value of the MMSE will be. The method is described as follows: It takes the image's center as the origin 180 beelines pass through the origin with the same angle interval. it calculates the value of the minimum mean squared error of the 180 beelines and find out the least one among those then the angle of the moire fringe comes out primarily. In order to improving the calculating precision of moire fringe 60 equal angles are divided in the neighborhood of the angle then a precise angle of moire fringe is calculated according to the principle of the MMSE. After getting out the angle of the moire fringe we begin to calculate the width of moire fringe. A line vertical with the moire fringe is drawn and we can get the width of the moire fringe by the vertical line. In order to get over the influence of the noise an effective area with the shape of diamond is selected in the image. The data of area is accumulated and projected according to the direction of moire fringe and a sine curve come out. The width of moire fringe can be obtained by getting the position of the first wave crest the position of the last wave crest and the number of wave crest. Experiments prove that the precision of the method put forward in this paper is enhanced in comparison with the traditional frequency method the precision of width calculation achieves to 99.6% according to the evaluation indicators of width detection error. The computing speed is boosted largely compared with traditional method and it can achieve with 15 ms that satisfying the demand of real time. 2011 SPIE.

Application of position sensitive detector for the electron detachment cross-sections measurement 期刊论文 OAI收割
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2010, 卷号: 613, 页码: 257-262
作者: Zhao, Jun; Bai, Xue; Li, Junqin; Zhang, Xuemei; Wei, Baoren

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收藏 | 浏览/下载：59/0 | 提交时间：2018/05/31

MCP Pulse height distribution Saturation curve Relative detection efficiency Electron detachment cross-sections

Measuring instrument for radial composite deviations of high-precision master gear (EI CONFERENCE) 会议论文 OAI收割
6th International Symposium on Precision Engineering Measurements and Instrumentation, August 8, 2010 - August 11, 2010, Hangzhou, China
作者: Zhang Y.; Wang L.; Wang L.; Wang L.

收藏 | 浏览/下载：37/0 | 提交时间：2013/03/25

During double flank rolling composite detection the radial composite deviations of master gears has been existed and transferred to the measured gear by the primary harmonic curve. In order to improve measurement accuracy a measuring instrument is developed for radial composite deviations of high-precision master gear in the paper. This instrument uses the structure of spring-suspend swing span to overcome the shortcomings of large rotation errors low sensitivity low resolution and large measuring force appearing in the traditional combination-type gear inspection instrument. Artificial intelligence technology is used to improve the efficiency and accuracy of this instrument. The result is that the measuring apparatus is able to meet the requirement and improve efficiency through the measuring experiments on master gears of precision grade 2 with modulus 2 mm and 3 mm respectively. 2010 SPIE.

Boundary Detection Using Open Spline Curve Based on Mumford-Shah Model 期刊论文 OAI收割
自动化学报, 2009, 卷号: 35, 期号: 2, 页码: 132-136
作者: Li XM(李小毛); Zhu LL(朱琳琳); Tang YD(唐延东)

收藏 | 浏览/下载：28/0 | 提交时间：2012/05/29

Open curve diffusion snake spline curve boundary detection M-S model