Search - matlab image

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[Software Engineering] ImageProcessing-CircleDetection-RenatoSalas_final DL : 0: The present report outlines the design, implementation and performance of the application of Hough Transform (HT) to detect circles in arbitrary pictures. Detecting circles in arbitrary pictures involves a two step process in this project. First, edges within the image have to be detected then, by means of a voting mechanism the most probable circles will be located. Edge detection goal is to look for boundary locations that naturally happen between objects. Objects normally have continuous intensity values therefore sudden changes in that pattern might indicate a boundary condition. Changes of intensity in one direction can be calculated by the gradient operator however, noise can alter meaningful edges. Convolution is then normally applied to account for a small amount of smoothing, thus reducing noise.-The present report outlines the design, implementation and performance of the application of Hough Transform (HT) to detect circles in arbitrary pictures. Detecting circles in arbitrary pictures involves a two step process in this project. First, edges within the image have to be detected then, by means of a voting mechanism the most probable circles will be located. Edge detection goal is to look for boundary locations that naturally happen between objects. Objects normally have continuous intensity values therefore sudden changes in that pattern might indicate a boundary condition. Changes of intensity in one direction can be calculated by the gradient operator however, noise can alter meaningful edges. Convolution is then normally applied to account for a small amount of smoothing, thus reducing noise.
Date : Size : 1.06mb User : donna
[Documents] matlab.picture.theory DL : 0: With regard to the method of image matlab
Date : Size : 2kb User : 黄涛
[Industry research] mmsp08 DL : 0: Feature extraction is a key issue in contentbased image retrieval (CBIR). In the past, a number of texture features have been proposed in literature, including statistic methods and spectral methods. However, most of them are not able to accurately capture the edge information which is the most important texture feature in an image. Recent researches on multi-scale analysis, especially the curvelet research, provide good opportunity to extract more accurate texture feature for image retrieval. Curvelet was originally proposed for image denoising and has shown promising performance. In this paper, a new image feature based on curvelet transform has been proposed. We apply discrete curvelet transform on texture images and compute the low order statistics from the transformed images. Images are then represented using the extracted texture features. Retrieval results show, it significantly outperforms the widely used Gabor texture feature.
Date : Size : 1.36mb User : Swati
[Software Engineering] readwav DL : 0: 该程序详细说明了怎么用MATLAB来读取音频文件属于非常详细的源代码的性质的源代码-This is a very useful program you kown ,i promise you ,it is more than you can image
Date : Size : 3kb User : Yan xiaoyun
[File Format] Robust_Real_time_Object_Detection DL : 0: 一个关于real adaboost的paper，里面也介绍了integral image的理论，这是我研究人脸辨识的参考资料。-A paper about real adaboost , which also introduce the theory of integral image. This is my reference of face detection.
Date : Size : 766kb User : Kevin Hsieh
[Software Engineering] bayer DL : 0: 抖动，是指当在低分辨率下看较高分辨率的图像、低色模式下显示更多色模式（如在VGA16色图形模式下显示256色及全彩色图像）时出现的颜色和图像变形的问题。-Jitter, when the low-resolution look at the images higher resolution, low-color mode to show more color mode (such as color graphics mode VGA16 display 256 colors and full-color images) when the color and image distortion problems.
Date : Size : 8kb User : 陈宇航
[Software Engineering] 528662_73a4472e572f6a1d DL : 0: 一个蚁群算法的图像处理程序！能够进行图像分割，提取图像边缘-An ant colony algorithm for image processing! To carry out image segmentation, image edge extraction
Date : Size : 18kb User : 朱杰
[Software Engineering] LineDetection DL : 0: this a line detection in image processing-this is a line detection in image processing
Date : Size : 1kb User : JAVAD
[File Format] dxVideo DL : 0: This library contains helper functions to read image frames into matlab from Video file using DirectShow. This library has borrowed codes from Ashwin Thangali s "DirectShow (DirectX) based AVI file reader", and it can read multiple video formats besides avi. Features: a) can read frames from rmvb, avi, etc. b) handles most codecs installed on the system d) its implementation is only based on the IMediaDet interface -- Depending on your Matlab version, the .mexw32 files may need to be renamed as .dll -- The library usage is as follows, [avi_hdl, avi_inf] = dxVideoOpen(avi_filename) pixmap = dxVideoReadMex(avi_hdl, frame_num) img = reshape(pixmap,[avi_inf.Height,avi_inf.Width,3]) dxVideoCloseMex(avi_hdl) -- recompile the library I have compiled the code with the DirectShow lib in Microsoft DirectX 9.0 SDK Update (December 2004) -- known limitation a)only works for windows :( b)may be slow for big image frames and some codecs. -This library contains helper functions to read image frames into matlab from Video file using DirectShow. This library has borrowed codes from Ashwin Thangali s "DirectShow (DirectX) based AVI file reader", and it can read multiple video formats besides avi. Features: a) can read frames from rmvb, avi, etc. b) handles most codecs installed on the system d) its implementation is only based on the IMediaDet interface -- Depending on your Matlab version, the .mexw32 files may need to be renamed as .dll -- The library usage is as follows, [avi_hdl, avi_inf] = dxVideoOpen(avi_filename) pixmap = dxVideoReadMex(avi_hdl, frame_num) img = reshape(pixmap,[avi_inf.Height,avi_inf.Width,3]) dxVideoCloseMex(avi_hdl) -- recompile the library I have compiled the code with the DirectShow lib in Microsoft DirectX 9.0 SDK Update (December 2004) -- known limitation a)only works for windows :( b)may be slow for big image frames and some codecs.
Date : Size : 17kb User : marwa
[Software Engineering] 1 DL : 1: 一种图像检索中纹理特征提取的方法。本文介绍了基于Gabor 滤波器和Gabor 小波变换提取纹理特征的分析方法, 以及对Gabor 小波进行了高斯归一化以提高对图像检索的速度和准确度。-An image retrieval texture feature extraction methods. This article based on Gabor filters and Gabor wavelet transform to extract texture feature analysis method, as well as Gabor Wavelet Gaussian normalized to enhance the image retrieval speed and accuracy.
Date : Size : 50kb User : 爱学习
[File Format] CBIR DL : 0: Graph-Cut Transducers for Relevance Feedback in Content Based Image Retrieval, Relevance Feedback for Content-Based Image Retrieval Using Bayesian Network,CONTENT BASED IMAGE RETRIEVAL,Relevance Feedback,A survey of browsing models for content based image retrieval,Analysis of Relevance Feedback in Content Based Image Retrieval, Performance Evaluation in Content-Based Image Retrieval: Overview and Proposals, COMPARISON OF TECHNIQUES FOR CONTENT-BASED IMAGE RETRIEVAL
Date : Size : 3.3mb User : sunda
[Software Engineering] 16604788-ebcot-Original-paper-taybman-image-compr DL : 0: best ebcot for jpeg2-best ebcot for jpeg2000
Date : Size : 237kb User : kaks
[Industry research] interpol_7 DL : 0: matlab code for resizing the image
Date : Size : 2kb User : nifrad
[Software Engineering] matlab_image_processing DL : 0: mathlab for image processing 2D, DFT, FFT etc.
Date : Size : 25kb User : Canggih Adiyasa
[Software Engineering] stereopairs DL : 0: 立体图像校准的matlab程序算法讲解。可以直接下载源码-A compact algorithm for rectification of stereo pairs
Date : Size : 171kb User : xujie
[Software Engineering] image DL : 0: Matlab Source Code to do several image processing and enhancement
Date : Size : 4kb User : FatimaThaher
[Documents] vvvvv DL : 0: 图像在获取、传愉和存储过程中, 由于受多种原因如模糊、失真、噪声等的影响, 会造成图像质的下降。维纳滤波是一种常见的图像复原方法, 该方法的思想是使复原的图像与原图像的均方误差最小原则来复原图像。但是该法其有一定的限制性, 本文在分析维纳滤波复原图像的基础上, 针对维纳滤波复原过程中产生的振铃效应, 提出了基于维纳滤波图像复原的改进算法。该葬法通过分析图像的边界条件, 来用对图像边界进行处理的方法, 将图像在边界处对称化。实脸结果表明, 该方法有效地降低了维纳滤波图像复原过程中产生的振铃现象, 且复原的图像质全较好。-Wiener filtering for image restoration can be better through the establishment of motion blur this mathematical model, simulation for image restoration, while also blur the image by adding noise to recover, that must be considered when there is noise, the image signal to noise ratio , the noise autocorrelation function for image restoration
Date : Size : 480kb User : 马飞
[Program doc] SSDA_080721 DL : 1: SSDA算法是一种快速图像匹配算法，希望对大家有所帮助！-SSDA algorithm is a fast image matching algorithm, we want to help!
Date : Size : 1kb User : xy
[Software Engineering] edge_detect DL : 0: edge detector: gaussian mask convolved with an image and then edge detection is carried out.
Date : Size : 1kb User : manish
[Software Engineering] projectt DL : 0: image enhacement with matlab
Date : Size : 320kb User : kiyan

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