Image Processing Files

Started by Sarosh in Matlab DSP17 years ago

hi, Can anyone kind kind enough mail the following 2 files from the Image Processing Toolbox 4. bwtraceboundary.m ...

hi, Can anyone kind kind enough mail the following 2 files from the Image Processing Toolbox 4. bwtraceboundary.m bwboundaries.m thnx __________________________________


image mapping

Started by sean_garber in Matlab DSP17 years ago

Hi, I just wrote my first program and was wanting to create some graphics for it. At the moment I have a animation of a 2D area...

Hi, I just wrote my first program and was wanting to create some graphics for it. At the moment I have a animation of a 2D area plot (box) moving across the plot background. Does anyone know if it is possible to map a .jpg image to the plot background and the plot area. A


load multiple image files in matlab

Started by Anshu in Matlab DSP16 years ago 1 reply

Hi   I want to read around 100 image files into matlab. How can you do that?   Anshu

Hi   I want to read around 100 image files into matlab. How can you do that?   Anshu


image segmentation

Started by moon moon in Matlab DSP14 years ago 1 reply

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 ...

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


how can i modify menu bar of image processing toolbox

Started by enas...@gmail.com in Matlab DSP13 years ago

hi all can i ask ..i have a siminar on 13 may 2007 i have an image processing application i want to modify the standard menu bar.. can...

hi all can i ask ..i have a siminar on 13 may 2007 i have an image processing application i want to modify the standard menu bar.. can I??? i have another question if i have a for loop how can i make a delay to the first step and then continue another step this is my code: for i = 1:7 str = strcat(int2str(i),'.jpg'); eval('img=imread(str);'); f=imshow(img); end ho...


Image Processing Help required! Passing of data from VB.net to Matlab

Started by chanfan_main in Matlab DSP12 years ago 1 reply

Hi !! I'm a student and would like to seek help on passing of data from VB.net to a Matlab program. I'm required to draw an unfilled...

Hi !! I'm a student and would like to seek help on passing of data from VB.net to a Matlab program. I'm required to draw an unfilled ellipse on an image using VB.net and passing this coordinates occupied by the unfilled ellipse onto matlab program that reads the same image as well as reading the coordinates of the unfilled ellipse. May i know how can i go about doing that? How do ...


pass variable to other function

Started by sven...@hotmail.com in Matlab DSP15 years ago

Hello, i searched the archive more then once about this and can not solve my 2 problems.. 1)I open a file (image) with a listbox and store...

Hello, i searched the archive more then once about this and can not solve my 2 problems.. 1)I open a file (image) with a listbox and store it in the variable filename. Now i would like to perform some operations on the image, pressing a pushbutton. How do i pass filename to the pushbutton callback funtion?? 2)I calculate a certain matrix (with the help of this group


Neural Nets, HSV and Histograms for face detection

Started by silverknight21 in Matlab DSP13 years ago

Hi, Am trying to use HSV in one of my applications to detect a face using skin color. Am developing a simple neural net for detecting the...

Hi, Am trying to use HSV in one of my applications to detect a face using skin color. Am developing a simple neural net for detecting the presence of a face in an image. First i resize all images into a 20x20 matrix. The i convert the image from RGB to HSV and then split it into H,S and V values/matrices. Do i use the H,S or V value as inputs into the net? Then how do histograms work exac...


Display value/matrix in GUI

Started by sven...@hotmail.com in Matlab DSP15 years ago 1 reply

Hello, I have made a GUI, in which i open an image and perform some operations on the image. I also calculated some values (MSE,SNR...) and an...

Hello, I have made a GUI, in which i open an image and perform some operations on the image. I also calculated some values (MSE,SNR...) and an 8x8 matrix. How can i display these values and the matrix on my GUI ?? Thx in advance, Sven.


Quality of a compression.

Started by rukmanimohan04 in Matlab DSP15 years ago 2 replies

Hi, I want to know how are the images qualified after compression ? That is, How are they given 100% ,90% 80% and so on.... as...

Hi, I want to know how are the images qualified after compression ? That is, How are they given 100% ,90% 80% and so on.... as quality? When we consider the 2d dct image compression in matlab image processing toolbox demo is it right to consider the quality of the compressed images based on the number of coefficients included? KIndly


Image classification

Started by billulster in Matlab DSP15 years ago

Friends Has anybody used Matlab for Satellite Image Classification? I need to know how to load satellite images with different bands...

Friends Has anybody used Matlab for Satellite Image Classification? I need to know how to load satellite images with different bands into Matlab. Besides, the ability to use Matlab for classification accuracy assessment. Any comments would be highly appreciated. Bill


About "cov" function in MATLAB?

Started by meydey_82 in Matlab DSP12 years ago

Hi all! I'm trying to realize the work of Sadjadi named "A full plane block kalman filter for image restoration". In this paper, there is...

Hi all! I'm trying to realize the work of Sadjadi named "A full plane block kalman filter for image restoration". In this paper, there is a section to find a parameter named "p". Simply, I can explain my problem like this. There are some vector observations, x, that represents some pixel values on the image and their sizes are 1xN. It is wanted to find the parameter p(k) and its definit...


Problems with using bwlabels with a coin counter

Started by matthew joyce in Matlab DSP14 years ago

Thanks to those who helped me with inverting the black and white image > > I = imread('H:\image\simple.png'); J = rgb2gray(I); figure,...

Thanks to those who helped me with inverting the black and white image > > I = imread('H:\image\simple.png'); J = rgb2gray(I); figure, imshow(I), figure, imshow(J); level = graythresh(J); BW = im2bw(J,level); BW=~BW; imshow(BW) > > BW1 = imfill(BW,'holes'); imshow(BW1) The next step that I want to do is use the bwlabel function. The problem that im having with it though is that I do


som toolbox

Started by barnali789 in Matlab DSP16 years ago

hi i need to implement self organizing neural neural networks with SOM toolbox, which i have downloaded (toolbox). I am...

hi i need to implement self organizing neural neural networks with SOM toolbox, which i have downloaded (toolbox). I am working with jpg MRI images. How do I pass my image data to the toolbox? which functions do i use to read my image data in the toolbox so that I can g


Seeded Region Growing Image Segmentation

Started by chanfan_main in Matlab DSP12 years ago

Dear all, Do you guys know of any ready-made software for Image segmentation using Seeded Region Growing Technique(SRG)? Please...

Dear all, Do you guys know of any ready-made software for Image segmentation using Seeded Region Growing Technique(SRG)? Please advise! Thanks! James


plot on image

Started by Ibrahim muhammed in Matlab DSP10 years ago

Hi guys, I'm really stuck on plotting a line on an image. Any help will be highly appreciated! 1) data=[72 x 154] double figure,...

Hi guys, I'm really stuck on plotting a line on an image. Any help will be highly appreciated! 1) data=[72 x 154] double figure, pcolor(data), shading flat;colorbar 2) Now I would like to plot maximum value along the column axis, but its like 'hold on' doesn't work for me, or is it my indexing? I did [c,I]=max(data); hold on, plot (c,'r'); ---------...


TIFF Files / Matlab

Started by Daljit Dave Singh in Matlab DSP16 years ago

Friends, I am working on TIFF files, and when I open them on Windows using IMAGE, and SGI Unix using XV, I get 2 layers of images ...

Friends, I am working on TIFF files, and when I open them on Windows using IMAGE, and SGI Unix using XV, I get 2 layers of images ovelapping. Wondeing if some one knows, how to open without overlaping, thanks, Dave TIFF: Tagged Image File Format Other keywords, CATSCAN,


MatLab interfaced with Camera ---> nubie

Started by pakigenius786 in Matlab DSP17 years ago 1 reply

Can i interface a camera with MatLab. Take the video, strip it down so its something called a "binary image" and feed it back...

Can i interface a camera with MatLab. Take the video, strip it down so its something called a "binary image" and feed it back wireless to a microcontroller (PIC). what is a binary image and how do i use it? Thank you VERY MUCH. all help is greatly appreciated. Mohamm


filter applicaion

Started by Harsh Pradhan in Matlab DSP15 years ago 1 reply

i am trying to apply a filter to a image matrix x ,, x=imread('image.bmp);please can u tell me how to apply digital filer to the matrix x, ...

i am trying to apply a filter to a image matrix x ,, x=imread('image.bmp);please can u tell me how to apply digital filer to the matrix x, i can design filter using fdatool; but where does the desined filter is saved i do not know,, and how to use any filter on any input sequence i do not know. please help me in this thing


Digitial image correlation for strain measurement

Started by Madhusudhanan Balasubramanian in Matlab DSP16 years ago

Hello, I'm using the suggested newton-raphson iterative scheme for solving the 6 deformation parameters for strain measurement...

Hello, I'm using the suggested newton-raphson iterative scheme for solving the 6 deformation parameters for strain measurement using digital image correlation. However my results do not converge so well. Does anyone have any experience in DIC for strain measurement?