Matlab

How to get pixel intensity values of an image
Hi all, I'm a beginner in matlab. I have a grayscale image and I would like to get the intensity value of every pixels in the image. As far as I know, imhist will only show a graph of the intensity value. Instead, I want to retrieve the value (i.e the integer value). Thanks in advance ... 4 Jan 2010 08:07

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MATLAB - serial communication problem..loss of data
i need some code about serial communication with Matlab but fwirte and fprintf not work why? i want to transfer 'String' data to Microcontroller through Serial Port. i write Matlab code in following form: s=serial('com1','baudrate',115200); fopen(s) fprinf(s,'typeAlpha/r') %'typeAlpha/r' data to transfer ... 6 Jan 2010 08:46

logistic regression
Hello Currently i am working for my project regarding logistic regression using several variables. for your information, i used glmfit function to calculate the coefficients. Here, i would like to ask regarding log likelihood ratios and standard error for my coefficients. Is there any way on how to calculate log li... 8 Mar 2010 11:55

Fruit image segmentation
Hello, I'm doing research on jatropha fruit. I need your help for segmentation of the fruit. Currently I'm using thresholding technique and edge detection method to separate fruit image from background. However, it's not applicable for all fruit with different maturities where I cannot get the perfect shape of ja... 4 Jan 2010 07:03

parallel processing - parfor - progress monitor
As far as I've seen in the forums there doesn't seem a way to monitor the progress of a par for loop (that is how many iterations have executed). Since the simulations I run take a couple of hours this would be quite useful. Is there any other computationally effective way to implement a 'parfor' loop, using other c... 4 Jan 2010 04:51

Unscented Kalman Filter
Hi, I am looking at some time series data. Does anyone have an m-file for an Unscented Kalman Filter (UKF) that is easy to use? thanks! sushma ... 21 Jan 2010 21:26

matrix inverse using qr decomposition
I need to write a homework about the inverse matrix. I wrote with other methods (ie the LU, LU with pivoting), just missing matlab code with QR factorization ... so if someone knows and is willing to help would be very grateful ... 14 Jan 2010 16:55

shape based image retrieval help
i think u r wrong at the beginning the centroid u r calculating should be calcualted from only the shape not the whole image. But anyway if u have fixed the problem i d apriciate if u could share the final code, because now im starting to code the GFD and also have some dificulties thanks in advance "shantini jey... 3 Jan 2010 13:50

To draw the major and minor axis of an ellipse
Hi everyone, In this link ( http://drop.io/major_and_minor_axis ) , I have different objects with their best fit ellipse and their centroid. Does anyone know how to plot the major and minor axis of this ellipse which passes through that centroid? From regionprops only their lengths and orientation is known!!!... 3 Jan 2010 10:29