中国科学院机构知识库网格系统: 检索

Automated accelerated solvent extraction method for total lipid analysis of microalgae 期刊论文 OAI收割
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS, 2020, 卷号: 51, 页码: 9
作者: Chen, Wei; Liu, Yongmei; Song, Lirong; Sommerfeld, Milton; Hu, Qiang

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收藏 | 浏览/下载：137/0 | 提交时间：2020/12/03

Total lipids Comparison studies Microalgae Accelerated solvent extraction Conventional methods Biofuel Lipid quality

Applying maximally stable extremal regions and local binary patterns for guide-wire detecting in percutaneous coronary intervention 期刊论文 OAI收割
IET IMAGE PROCESSING, 2019, 卷号: 13, 期号: 13, 页码: 2579-2586
作者: Pusit, Prasong; Xie, Xiao-Liang; Hou, Zeng-Guang

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收藏 | 浏览/下载：34/0 | 提交时间：2020/03/30

blood vessels medical image processing surgery image sequences video signal processing image filtering object detection X-ray imaging object tracking stroke width variation filter region detection local binary patterns guide-wire recognition conventional MSER methods maximally stable extremal regions guide-wire position anatomical skeleton contours training data X-ray video sequence percutaneous coronary intervention surgery region area range filter X-ray video monitoring guide-wire tip detection modified multifilters training templates

A porosity calculation method based on CT images and its application 期刊论文 OAI收割
JOURNAL OF HYDRAULIC ENGINEERING, 2015, 卷号: 46, 期号: 46, 页码: 357-365
作者: Wang Y(王宇); Wang; Yu; Que JM(阙介民); Li

收藏 | 浏览/下载：41/0 | 提交时间：2016/04/18

Conventional methods CT Image Deformation and failures Gray-level Porosity calculations Segmentation methods Threshold segmentation X-ray computed tomography

Local variance based color image quality assessment method (EI CONFERENCE) 会议论文 OAI收割
2011 2nd International Conference on Advanced Measurement and Test, AMT 2011, June 24, 2011 - June 26, 2011, Nanchang, China
作者: Wang Y.; Wang Y.; Wang Y.; Wang Y.; Wang Y.

收藏 | 浏览/下载：18/0 | 提交时间：2013/03/25

In this paper local variance is used to describe the structural information of a color image in order to assess its quality. The representation method is different from conventional models in that some information that is sensitive to human eyes is enhanced by using local variance distribution. It encodes the local variance distribution of different channels of a color image into the three imaginary parts of a quaternion. The distance between the singular value feature vectors of the source image block and the distorted image block which are described by quaternion matrices is calculated. The experimental results show that the assessment results of the proposed assessment method are more consistent with the Human Visual System than those of the conventional assessment methods.

An enhancing method based on locally redistributed histogram for medical image (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
作者: Zhang L.-P.

收藏 | 浏览/下载：10/0 | 提交时间：2013/03/25

This paper present a fast and simple medical image enhancing method based on locally redistributed histograms which can enhance the contrast ratio of medical images efficiently. Compared with conventional enhancing methods it can process images more clearly and suppress noise more efficiently especially for medical images. 2010 IEEE.

Non-uniformity correction in multi-CCD imaging system (EI CONFERENCE) 会议论文 OAI收割
2010 2nd International Conference on Mechanical and Electronics Engineering, ICMEE 2010, August 1, 2010 - August 3, 2010, Kyoto, Japan
Tao M.; Ren J.

收藏 | 浏览/下载：14/0 | 提交时间：2013/03/25

The non-uniformity phenomenon exists in each channel of multi-CCD imaging systems. The factors which lead to the problem are complex. The conventional calibrating algorithms can not consider all of these factors and have poor effects. According to the characters of multi-CCD imaging systems a non-uniformity correction method based on the scene was proposed by adopting the traditional two-point correction theories. The correction coefficient of each channel image can be calculated via the linear relation between the two neighboring pixel lines in the two-channel images. Compared with the conventional two-point calibration and multi-point calibration methods contrastive calibrating results were obtained. This method does not need any standard lighted image as reference source which provides a real time way for calibrating the multi-CCD imaging systems in practical applications. 2010 IEEE.

Handwritten character recognition based on 13-point feature of skeleton and self-organizing competition network (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Intelligent Computation Technology and Automation, ICICTA 2010, May 11, 2010 - May 12, 2010, Changsha, China
Zhong C.; Ding Y.; Fu J.

收藏 | 浏览/下载：35/0 | 提交时间：2013/03/25

This article is about the recognition for handwritten characters. Firstly we use some conventional methods to preprocess the images and introduce the 13-point feature of skeleton method to extract the data that containing feature of the handwritten character. Secondly we use the data to train the self-organizing competition network. In the end we test the net and conclude that this method has a good performance at handwritten character recognition. 2010 IEEE.

Color image quality assessment based on quaternion representation for the local variance distribution of RGB Channels (EI CONFERENCE) 会议论文 OAI收割
2009 2nd International Congress on Image and Signal Processing, CISP'09, October 17, 2009 - October 19, 2009, Tianjin, China
Yuqing W.; Ming Z.

收藏 | 浏览/下载：16/0 | 提交时间：2013/03/25

In this paper Quaternions are used to describe the structural information of a color image in order to assess its quality. The representation method is different from conventional models in that some information that is sensitive to human eyes is reinforced by using local variance. It encodes the local variance distribution of the RGB channels of a color image into the three imaginary parts of a quaternion. The luminance layer of the color image is taken as the real part of the quaternion. The distance between the singular value feature vectors of the source image block and the distorted image block which are described by quaternion matrices is calculated. The final assessment result is calculated by using the mid point of the distances. The experimental results show that the assessment results of the proposed assessment method are more consistent with the Human Visual System than those of the conventional assessment methods. 2009 IEEE.

Nonlinear laser focusing using a conical guide and generation of energetic ions 期刊论文 OAI收割
phys. rev. e, 2008, 卷号: 78, 期号: 3, 页码: 36405
Cao Lihua; Yu Wei; Yu M.Y.; Xu Han; He X.T.; Gu Yuqiu (7); Liu Zhanjun; Li Jinghong; Zheng Chunyang

收藏 | 浏览/下载：763/7 | 提交时间：2009/09/18

Conventional methods Energetic ions Focusing effects High-density Inner surfaces Laser focusing Laser-plasma interaction Light intensities Light pulses Particle-in-cell simulations Pulse shaping Punch-through Spot sizes Thin foils Thin target

Wavelet packet and neural network basis medical image compression (EI CONFERENCE) 会议论文 OAI收割
4th International Conference on Photonics and Imaging in Biology and Medicine, September 3, 2005 - September 6, 2005, Tianjin, China
Zhao X.; Wei J.; Zhai L.

收藏 | 浏览/下载：12/0 | 提交时间：2013/03/25

It is difficult to get high compression ratio and good reconstructed image by conventional methods we give a new method of compression on medical image. It is to decompose and reconstruct the medical image by wavelet packet. Before the construction the image use neural network in place of other coding method to code the coefficients in the wavelet packet domain. By using the Kohonen's neural network algorithm not only for its vector quantization feature but also for its topological property. This property allows an increase of about 80% for the compression rate. Compared to the JPEG standard this compression scheme shows better performances (in terms of PSNR) for compression rates higher than 30. This method can get big compression ratio and perfect PSNR. Results show that the image can be compressed greatly and the original image can be recovered well. In addition the approach can be realized easily by hardware.