中国科学院机构知识库网格系统: 检索

Modelling the stability of a soil-rock-mixture slope based on the digital image technology and strength reduction numerical manifold method 期刊论文 OAI收割
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS, 2021, 卷号: 126, 页码: 45-54
作者: Yang, Yongtao; Chen, Tao; Wu, Wenan; Zheng, Hong

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收藏 | 浏览/下载：51/0 | 提交时间：2021/05/25

Soil-rock mixtures Strength reduction technique Numerical manifold method Digital image processing technology Slope stability analysis

Small target detection based on reweighted infrared patch-image model 期刊论文 OAI收割
IET IMAGE PROCESSING, 2018, 卷号: 12, 期号: 1, 页码: 70-79
作者: Guo, Jun; Wu, Yiquan; Dai, Yimian

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收藏 | 浏览/下载：74/0 | 提交时间：2018/12/12

Object Detection Infrared Imaging Principal Component Analysis Small Target Detection Reweighted Infrared Patch-image Model Infrared Small Target Detection Sparse Background Edges Background Estimation Reweighted Nuclear Norm Nontarget Sparse Points Reweighted Robust Principal Component Analysis Problem Inexact Augmented Lagrangian Multiplier Method Background Clutter Suppression Reweighted l(1) Norm

Robustness Analysis of License Plate Visual Positioning Method in Vehicle Collision Warning System 期刊论文 OAI收割
International Journal of Pattern Recognition and Artificial Intelligence, 2017, 卷号: 31, 期号: 1, 页码: 1-15
作者: Qin LJ(秦丽娟); Wang T(王挺)

收藏 | 浏览/下载：44/0 | 提交时间：2016/08/14

Robust analysis vehicle anti-collision warning system visual location method license plate image

Blind deblurring from single motion image based on adaptive weighted total variation algorithm 期刊论文 OAI收割
IET SIGNAL PROCESSING, 2016, 卷号: 10, 期号: 6, 页码: 611-618
Wen, J; Zhao, JS; Cailing, W; Yan, SX; Wang, W

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收藏 | 浏览/下载：27/0 | 提交时间：2016/12/09

image restoration image motion analysis inverse problems blind image deblurring method adaptive weighted total variation algorithm single motion image structure blur kernel estimation point spread function ringing artefact removal higher-order partial derivative ill-posed inverse problem latent image restoration

Reconstructing light curves from HXMT imaging observations 期刊论文 OAI收割
Proceedings of the International Astronomical Union, 2014, 卷号: 10, 期号: 306, 页码: 355-358
作者: Huo, Zhuo-Xi; Zhang, Juan; Li, Yi-Ming; Zhou, Jian-Feng

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收藏 | 浏览/下载：24/0 | 提交时间：2019/07/11

method: data analysis techniques: image processing X-rays: time-varying objects

An Image Reconstruction Algorithm for Electrical Capacitance Tomography Based on Robust Principle Component Analysis 期刊论文 OAI收割
SENSORS, 2013, 卷号: 13, 期号: 2, 页码: 2076-2092
作者:

收藏 | 浏览/下载：26/0 | 提交时间：2015/10/23

electrical capacitance tomography capacitance sensor image reconstruction inverse problem robust principle component analysis forward-backward splitting technique alternating direction iteration optimization method

A line mapping based automatic registration algorithm of infrared and visible images 会议论文 OAI收割
5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications, Beijing, June 25-27, 2013
作者: Ai R(艾锐); Shi ZL(史泽林); Xu DJ(徐德江); Zhang CS(张程硕)

收藏 | 浏览/下载：36/0 | 提交时间：2013/12/26

There exist complex gray mapping relationships among infrared and visible images because of the different imaging mechanisms. The difficulty of infrared and visible image registration is to find a reasonable similarity definition. In this paper, we develop a novel image similarity called implicit linesegment similarity(ILS) and a registration algorithm of infrared and visible images based on ILS. Essentially, the algorithm achieves image registration by aligning the corresponding line segment features in two images. First, we extract line segment features and record their coordinate positions in one of the images, and map these line segments into the second image based on the geometric transformation model. Then we iteratively maximize the degree of similarity between the line segment features and correspondence regions in the second image to obtain the model parameters. The advantage of doing this is no need directly measuring the gray similarity between the two images. We adopt a multi-resolution analysis method to calculate the model parameters from coarse to fine on Gaussian scale space. The geometric transformation parameters are finally obtained by the improved Powell algorithm. Comparative experiments demonstrate that the proposed algorithm can effectively achieve the automatic registration for infrared and visible images, and under considerable accuracy it makes a more significant improvement on computational efficiency and anti-noise ability than previously proposed algorithms.

Characteristic point match algorithm based on the SURF in binocular stereo vision (EI CONFERENCE) 会议论文 OAI收割
5th International Conference on Intelligent Networks and Intelligent Systems, ICINIS 2012, November 1, 2012 - November 3, 2012, Tianjin, China
作者: Wang L.; Wang L.; Wang L.; Yang L.; Yang L.

收藏 | 浏览/下载：27/0 | 提交时间：2013/03/25

One of the main components of the computer vision is 3D reconstruction. Extracts and the match based on two-dimensional picture characteristic point is the 3D reconstruction technology core. Taking binocular stereoscopic vision theory as a foundation through extracts the characteristics of SURF based on the multi-scale analysis this feature has specific scale reproducibility put the epipolar constraints and disparity constraints as conditions judgement to specific screening it is greatly reduced the search range. The experiment use the matching method for three different actual scenes the results shows that the method can enhance the image matching speed and precision and can get more precise dense parallax used for reconstruction complete scene. 2012 IEEE.

The research of digltal CR medicine image adapitive enhancement method (EI CONFERENCE) 会议论文 OAI收割
4th International Conference on Mechanical and Electrical Technology, ICMET 2012, July 24, 2012 - July 26, 2012, Kuala Lumpur, Malaysia
Ming-Hui Z.; Yao-Yu Z.

收藏 | 浏览/下载：66/0 | 提交时间：2013/03/25

Digital CR medicine radiation image is in doctor's favor and has became medicine imaging technology new hot spot because of its high gray contrast powerful computer disposal function little radiation dosage non-film diagnosis different area consultation. But degradation of digital X-ray medical image such as low contrast and blurring during radiographic imaging caused by complexity of body tissue and effects of X-ray scattering and electrical noise etc. can worsen the results of analysis and diagnosis. So it is usually needed that CR medicine image is enhanced to improve its vision quality and easy to doctor's more accurate diagnosis. The general enhancement algorithms over enhancing the contrast and lose image details aiming at the defects an enhancement algorithm for CR image is proposed based on the ratio of deviation to mean of domain. The arithmetic enhance CR image edge details by adjusting factor K based on the ratio of deviation to mean of domain of CR image. Experiment results demonstrate that the algorithm enhances CR image detail and CR image enhanced has good visual effect the adaptive enhancement method is fit for CR medicine image. (2012) Trans Tech Publications Switzerland.

Comparison and simulation of subpixel imaging modes for linear CCD (EI CONFERENCE) 会议论文 OAI收割
2012 3rd International Conference on Information Technology for Manufacturing Systems, ITMS 2012, September 8, 2012 - September 9, 2012, Qingdao, China
作者: Li Y.; He B.; Li Y.; Li Y.; Li Y.

收藏 | 浏览/下载：37/0 | 提交时间：2013/03/25

Subpixel technique of linear CCD is effective to enhance the spatial resolution without increasing the focal length of optics and reducing the pixel size. To compare image quality of two main subpixel imaging modes quincunx sampling and four-point sampling a method to quantitatively evaluate image quality of subpixel based on MTF was proposed. The MTF of quincunx and four-point sampling modes were derived. Analytical results shows that theoretical limiting resolution of quincunx sampling and four-point sampling is improved to 1.4 and 1.86 times respectively and MTF values at Nyquist frequency of two modes are increased by 0.1106 and 0.1679 respectively. MTFA in (0 0.5) of two subpixel imaging modes were calculated and results illustrates that four-point sampling offers much more improvement with image quality than quincunx sampling at the cost of double amount of data. A model for simulating subpixel imaging using Matlab was established and simulation results of spoke target verify the theoretical analysis. (2012) Trans Tech Publications Switzerland.