Matlab

Fault in Graycomatrix ?
the Numlevels parameter is used to scale the image into (even?) bins. So when you would calculate the graycomatrix of a vector goint from 0 to 255 and you set Numlevels to 8. You should get 32 , 1's,2's,...,8's. B(1,:) = 0:31; B(2,:) = 32:63; B(3,:) = 64:95; B(4,:) = 96:127; B(5,:) = 128:159; B(6,:) = 160:19... 2 Mar 2010 08:57

saving image with it's native resolution...
Fatihcan K&#305;l&#305;ç <fatihcankilic123(a)yahoo.com> wrote in message <583348585.126303.1256741331467.JavaMail.root(a)gallium.mathforum.org>... I worked on this problem long time and i understood the only way to handle this: to extract as "PDF" Hi guys, I have exactly the same problem, I read all of y... 2 Mar 2010 15:47

Medical imaging
I am working on extraction of blood vessels from MRA images. In order to find 8-connected neighbors in binary image bwlabel function is used. How can we find 8-connected neighbors of gray scale image. ... 2 Mar 2010 07:51

getting frame number of real time signal
Hi, I want to product a variable with the frame number of the input signal in real time simulink application. but I didnot achieve this. is there any other way to take the processing time or number of processed signal frame ? thanks ... 2 Mar 2010 07:51

Function imellipse
Good morning. I wonder how I can use the function imellipse to create a mask in an image, which is a uint8 image 640x480. The masked image should contain only values of pixels in the selected region, out of this, the values must be zero. When I apply the following routine in my image: a=imread('image1'); b=imr... 2 Mar 2010 11:13

Excel COM server
Hello, when running the xlswrite command, I end up with the following message: Warning: Could not start Excel server for export. XLSWRITE attempts to file in CSV format. I use Matlab version 7.8.0 (R2009a), and also tried R2010a. I use Excel 2003, fully installed. Does anyone have a suggestion on how I ca... 2 Mar 2010 07:51

Mex File question
Hi i have a mex file that has the following line in it currentcell = 1* *(y+((rows*counter1) + counter2); it is called quite a few times 200K plus can anyone tell me what the 1* part signifies ( i built my mex file using matlab example files so i have included it but i dont know what it does) as my code runs f... 2 Mar 2010 10:05

Local Minimum Solution
Hi all, I'm trying to fit a function to experimental results. the solver i'm using is 'lsqcurvefit'.... The question is how can i be sure that the results is converging to a global solution (unique one) and not to a Local Minimum Solution. i've already checked the lsqcurvefit documentation, and i can say i understa... 2 Mar 2010 10:05

String argument is an unknown option
M=2; Tsym=0.2; Tsample=0.01; EbNoVec=[0:2:12]; TVec=[1000 1000 1000 15000 20000 100000 100000]*Tsym; maxNumErrs=100; maxNumBits=1e6; for n=1:length(EbNoVec); Tmax=TVec(n); EbNo=EbNoVec(n); sim('mpsk'); BERVec(n,:)=grayBER; EbNoLineare=realpow(10,EbNo/10); TheoryVec(n,:)=[erfc(sqrt... 2 Mar 2010 08:58

Changing the order of the nodes of a wavelet packet tree?
Hello all, Matlab seems to calculate the nodes of the wavelet packet tree in the following order (A=approximation or lowpass+downsampling, D= detail or highpass+downsampling): level nodes 0 original signal 1 A1 ... 24 Mar 2010 11:09