Matlab

Problem with wavedec2
I have used wavedec2 on Image ( 512 * 512) to decompose it into 4 levels which means the level 1 coefficients ( horizontal, vertical, diagonal) should be of size 256 *256 and second level should be 128 *128 , etc.. But in MAtlab 2009b, I am getting 263 *263 matrix for level 1 coeffient. HOW? Below is my code: i... 11 Mar 2010 00:12

Problem with wavedec2
If you do a Wavelet decomposition of Image ( 512 *512) into 4 levels using any wavelet family, the first detail coefficients ( also vertical & horizontal) should be of length 256 *256 and second level will be 128 *128. But When I did in Matlab 2009b, it is giving as 263 * 263 matrix for first level coefficients.... 11 Mar 2010 00:12

classification of color images
Hello Friends, I am trying to classify images(colour). For eg a certain type of medical image(MRI,CTSCAN,Fundus..etc). I am looking for algorithms that can classify images as MRI or non-MRI,fundus-non-Fundus..etc. What are the simple classification techniques used for such? regards ... 15 Mar 2010 15:48

Sobel Edge Detection
After using sobel edge detection on an image.. I plotted a graph of pixel values vs pixel position (for one row of the image).. The link of the graph is attached here: http://farm5.static.flickr.com/4010/4423446095_1f8d52cc4a_b.jpg I located all the edge positions and plotted them on the same graph using mar... 11 Mar 2010 00:12

Sobel Edge Detection
After using sobel edge detection on an image.. I plotted a graph of pixel values vs pixel position (for one row of the image).. The link of the graph is attached here: http://farm5.static.flickr.com/4010/4423446095_1f8d52cc4a_b.jpg I located all the edge positions and plotted them on the same graph using mar... 12 Mar 2010 11:38

need some help in matlab fsolver
Dear Friends, i am using fsolver in matlab when i write my all equation manually then i get correct answer. If i write these equations with help of for loop i am not getting correct ans. will any one please help me. i am new in matlab thanks in advance Alok x0=[-0.1085 -0.3293 -0.3618 -0.3293 -0.10... 11 Mar 2010 00:12

SELF ORGANIZED MAP
hello please tell me how to apply a SOM on USG image to identify number of different regions in abdomen ( seperated by different gray intensity levels) thanks. ... 11 Mar 2010 00:12

how to print cell array
Hi I use textscan to read the file. Then I want to fprintf to screen. But fails. [A, count] = textscan(fid,'%s %d %d %d %f %f %f %d %d %d %f %f %f %f %f %f %f %f %f %d %d %d') fprintf('%s\n',A{1,:}) it shows A = Columns 1 through 6 {140x1 cell} [140x1 int32] [140x1 int32] [140x1 int... 11 Mar 2010 00:12

SVM simple question
Hi guys, So far I understand that SVM try to find the parameters (w and b) of the hyperplane described by the equation y(i)=w*x(i)+b I wonder where svmtrain function save the w vector. I can not find it in the SVMStruct. Regards, ... 16 Mar 2010 19:49

setting figure size limits
How one can set the figure size limits: i.e. from a certain size the figure is not shrinkable? thanks for any help ... 10 Mar 2010 20:54