Beantwortet
imshow - plotting a circular image, how to make corners white?
Could you share your matrix. Or try following command. colormap gray; This will make show boundary either black or white...

fast 14 Jahre vor | 0

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quick itteration
Though your code requires cleaning but this code will generate exact output you are required. In your code there are many variab...

fast 14 Jahre vor | 1

Beantwortet
quick itteration
I guess this can be done in one line without using for loop, and second line for plot. Could you tell us about L, N and other va...

fast 14 Jahre vor | 0

Beantwortet
compressing a image
What you explained about ratio, you better use <http://en.wikipedia.org/wiki/Run-length_encoding Run length Encoding (RLE)>. You...

fast 14 Jahre vor | 2

Beantwortet
Highlight a point on graph.
Lets say you have a curve, and you know one point which you want to highlight. Then simply plot that point with different marker...

fast 14 Jahre vor | 7

Beantwortet
How to make mex file of C program in matlab
if it is mex file, its mean C code for matlab. then simply compile it by this command in matlab editor. mex unravel.c; ...

fast 14 Jahre vor | 2

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Beantwortet
Testing/training set
it totally depends on type of dataset. One of the famous technique is <http://en.wikipedia.org/wiki/Cross-validation_(statistics...

fast 14 Jahre vor | 1

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Beantwortet
finding the best match between set of images using SIFT algorithm
As I understood, you want to do image to image matching. Let say your template image is T, and you set of images D. Each image...

fast 14 Jahre vor | 3

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Beantwortet
cell array
try like this. entryname=[entryname1 entryname2]; use [] instead of {}. I hope it will work.

fast 14 Jahre vor | 3

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How can i capture image from webcame and save it in a folder ( for recognization)
May be this tutorial is helpful to you. <http://www.mathworks.com/matlabcentral/fileexchange/22792-video-tutorial-how-to-conn...

fast 14 Jahre vor | 1

Beantwortet
Searching files
yes it is possible to search files. you can write code as you like. For example I want to search file 'test.txt' in current ...

fast 14 Jahre vor | 1

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Beantwortet
How to add gaussian noise to the 1D signal
Other then obove given solution, this might work.. Let say your 1D signal is *H*, then GH = H.*fspecial('gaussian', size...

fast 14 Jahre vor | 1

Beantwortet
K means clustering in ECG Signal
<http://www.vlfeat.org/ Vlfeat> is one the best opensource library for many computer vision and machine learning algorithms. It ...

fast 14 Jahre vor | 2

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help about (=) operator
You might not be using US keyboard layout. About keyboard layouts <http://en.wikipedia.org/wiki/Keyboard_layout click here>. Tr...

fast 14 Jahre vor | 2

Beantwortet
Help with For/If commands
Use switches .. I hope it will solve your problem. ex. switch choice case {1,4,6,7,8,10,11} % your code here...

fast 14 Jahre vor | 2

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Beantwortet
image conversion
yes, you can convert color image to gray scale image, and gray scale image is 2-D image.

fast 14 Jahre vor | 2

Beantwortet
random number generation within the defined range
As Daniel suggested that we might not get exactly what you want. But there can be several tricks. Once possible trick is that yo...

fast 14 Jahre vor | 2

Beantwortet
How to put a good threshold in comparing images
It totally depends on type of images and applications. But you can keep various values of Threshold and on each value you calcul...

fast 14 Jahre vor | 2

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Beantwortet
multiply col vector with matrix
You can do it like this. bsxfun(@times,M,N) If N is column vector then each colmn in M is multiplied by N, else if N is ...

fast 14 Jahre vor | 1

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Beantwortet
crop image automatically
let say your image is I, and if you know your know the areas for your image to crop and those remain for all images then followi...

fast 14 Jahre vor | 2

Frage

Vectorization
Let say I have Matrix *M* with *i* rows and *j* columns. And one constant number *a* is given. Final output Matrix should be *N*...

fast 14 Jahre vor | 2 Antworten | 0

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Antworten

Frage

rotate image
Dear all, Let say I have patch *P* and I want to rotate it in the direction of angle *T* (in degrees). Rotation should be si...

fast 14 Jahre vor | 2 Antworten | 0

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Beantwortet
pixel value in given direction
let say you want to get point (x2,y2) then x2 = x1 + d * cos(T); y2 = y1 + d * sin(T); I hope this is what you wanted...

fast 14 Jahre vor | 2

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Beantwortet
Publishing a Pdf
Hi, may be this discussion help you. <http://mathworks.com/matlabcentral/answers/26903-exporting-image-to-bounded-pdf>

fast 14 Jahre vor | 2

Beantwortet
reordering the data
Second possible way is D = [1 2 3 4 5 6 7]; declare any temp variable to have the order of indices. For example. T ...

fast 14 Jahre vor | 2

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magnitude and direction
I think you want to compute the SIFT right ? Anyway to divide the image into blocks, you can use following tip <http://mat...

fast 14 Jahre vor | 3

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Euclidian Norm and Brightness between 2 images
then I guess for L you can do following. R1 = R1(:); R2 = R2(:); G1 = G1(:); G2 = G2(:); B1 = B1(:); B2 = B2(:); ...

fast 14 Jahre vor | 2

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Beantwortet
magnitude and direction
what do you mean by direction of images. I hope you are talking about gradient value and direction (orientation) ?

fast 14 Jahre vor | 3

Beantwortet
calculating the mean
Hi, could you please reformat the code. As it is difficult to see code. whenever you have line other then code then make that...

fast 14 Jahre vor | 1

Beantwortet
edit-error in calculating dsit
Well I guess you want to get single scalar value as distance of A2 for each Chanel in A1. If so then I try to do in steps. There...

fast 14 Jahre vor | 2

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