## Forums Search for: Segmentation

## Image procesing

HI, I want to "filter" an image and only left a color, in other words, i want to supress all color that arent the color choosen. I have...

HI, I want to "filter" an image and only left a color, in other words, i want to supress all color that arent the color choosen. I have read the both demo of image segmentation but i really dont understand it. Any ideas ?? Thanks in anvance. Regars, Cesar Acosta

## Image Segmentation by Quadtree Decomposition

Dear all I'm working on image analysis using quadtree decomp, but I don't know how I can reconstruct the image after applying the...

Dear all I'm working on image analysis using quadtree decomp, but I don't know how I can reconstruct the image after applying the command S = qtdecomp(I,threshold,[mindim maxdim]) Plz if any one can help me with the appropriate command.

## extracting frames from divx(dx50) compressed avi file

inHi, When i try to show some frames from test file with aviread command i have 'Segmentation violation' error and i didn't solve the...

Hi, When i try to show some frames from test file with aviread command i have 'Segmentation violation' error and i didn't solve the problem. can any one help ? thanks for all your help mov=aviread('file.avi',2); imshow(mov.cdata); ---------------------------------------------------------------------- -- Segmenta

## Image segmentation and tracking .... HELP!!! anyone got a clue?

inHI, I would appreciate some help.... I am trying to write a program in MATLAB that will segment moving objects, for example cars, from a...

HI, I would appreciate some help.... I am trying to write a program in MATLAB that will segment moving objects, for example cars, from a series of images (extracting each frame from a video) and that superimposes on each object its bounding box. Has any one got an idea? The images are RGB. and the bounding boxes must be seen on the RGB image not binary or grayscale.

## 1D segmentation

Hello all, A new bee to wavelets, I need to segment a topographic profile (langscape profile sampled at an interval 6 meters extending to 20 kM...

Hello all, A new bee to wavelets, I need to segment a topographic profile (langscape profile sampled at an interval 6 meters extending to 20 kM long) based on the roughness of the profile and also find wavelet power spectrum of it. In that case which wavelet would be the best or can some body pass on to me the necessary matlab code. I would highly appreciate any kind of help. Thanking y...

## Re: segmentation

I think this code should work It basically segments the image and stores it in a 3 dimensional array which can be accessed by varying...

I think this code should work It basically segments the image and stores it in a 3 dimensional array which can be accessed by varying the 3rd dimension of the array 'a' in code below Hope this helps Tarang im = imread('image.jpg'); % I assume that image size is 144 x 144 xLength = 12; yLength = 12;

## mexfunction matlab fortran

> > Hi all > > > > I am trying to Call a mex files Fortran Program from Matlab Program >and I > > have a Matrix output and...

> > Hi all > > > > I am trying to Call a mex files Fortran Program from Matlab Program >and I > > have a Matrix output and some scalar input , but when I execute the >Program > > I have a Segmentation Violation Error . >

## local minima(maxima)

Hello, I need to develop an algorithm that needs to perform a segmentation of a signal according to the local minima(or maxima). The problem is...

Hello, I need to develop an algorithm that needs to perform a segmentation of a signal according to the local minima(or maxima). The problem is that when I have a noisy time series I can't to this but manually. Can somebody give me an idea on how to deal with this problem? Thank you very much!

## speech signal segmentation

inDear All, I have a speech signal in a matrix form (through wavread) Now I want to eliminate silent periods of the sound track. ...

Dear All, I have a speech signal in a matrix form (through wavread) Now I want to eliminate silent periods of the sound track. If you have any idea, please let me know... My Objective: I am trying to break the speech signal into word segment to analyze phone

## Re: image signatures

Hi, The best way to learn MATLB is to explore it and check out its features. Image signatures are basically a simple representation of your...

Hi, The best way to learn MATLB is to explore it and check out its features. Image signatures are basically a simple representation of your image or object- rather than looking at a object in 2 dimensions you can extract the important structural information of the image and represent it as a vector. This simplifies your problem. I've already sent a mail about image segmentation- you can

## image segmentation

inHello everyone, Am a beginer with matlab so i do need your help to get started, I have a 64x64 image in gray scale, i already ...

Hello everyone, Am a beginer with matlab so i do need your help to get started, I have a 64x64 image in gray scale, i already extracted the histogram (nbr of pixels, intecities (0-255)), I selected some intencities inorder to segment a specific region , I want to know how to create a function inorder to segment specific intencities and apply

## Help appreciated. Simple calculation, small matrix, and annoying "out of mem" problem.

Hi guys, I am using Matlab for a solar data statistics project. The aim of the project is to make an automatic unsupervized segmentation of EIT...

Hi guys, I am using Matlab for a solar data statistics project. The aim of the project is to make an automatic unsupervized segmentation of EIT images coming from the SoHO satellite. One of the approaches involves, at some point of the algorithm, to calculate a Mahalanobis distance (generalized dissimilarity distance, popular in multivariate stats). I received the code from a person that de...

## cooccurence matrix for edge detection algorithm

Hi friends, This is vivek from NIT,trichy,INDIA.Do anybody know the algorithm using cooccurance matrix for image...

Hi friends, This is vivek from NIT,trichy,INDIA.Do anybody know the algorithm using cooccurance matrix for image segmentation and edge detection. i need the matlab or c coding of those algorithm. please help me.............. regds vivek

## Problem in processing multiple images

Dear friends, I need to segment a set of images. So I am trying to run my segmentation code on the sequence of images one by one. I am...

Dear friends, I need to segment a set of images. So I am trying to run my segmentation code on the sequence of images one by one. I am facing an interesting problem in MATLAB--that is the code runs faster for first 2 images and slows down for the third one. This problem is consistent. This problem persists if I change the order of the images also. Images are all of same size. I even clea...

## Need a robust algorithm

Hi all, I am working on particle analysis and I am trying to automate cell count. I came up with an algorithm which first filters the noise...

Hi all, I am working on particle analysis and I am trying to automate cell count. I came up with an algorithm which first filters the noise , then does segmentation, closes unclosed cells, fills holes and then does cell count. The algorithm works well for some images, however there are problems when this code is applied to images in which the cells are of the same clarity as the backgroun...