All Questions
57 questions
1
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1
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84
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matlab Array dimensions must match for binary array op
i have been stuck on this problem for quite a while now, i am trying to make a code in matlab that looks through a wally crowd picture and tries to find wally by comparing it to a picture of wally ...
- 41
0
votes
1
answer
122
views
Store matrices in an array - MATLAB
I am trying to store 2x2 matrices in an array, which is to be connected to a particular size of an image for futher image processing. I.e.:
pixx = 300; % x number of pixels;
pixy = 200; % y number of ...
- 23
1
vote
3
answers
136
views
Matlab: Replace zeros with last non-zero index
I have a matrix Cr of size 352x240 uint_8.
How can I replace zeros with last non-zero index?
For example, output should be like this:
141 141 141 142 ...
141 141 141 142 ...
141 141 141 142 ...
141 ...
user4282023
1
vote
2
answers
799
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I have problem with converting MATLAB code to Python
I need to convert the block of code that's shown below to Python. I created two arrays named u and v seperately and put them in a for loop in the range 0 to M-1 and I know find works similar to if ...
0
votes
1
answer
1k
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How to fix this error Index in position 2 exceeds array bounds in MATLAB?
I have a problem with this line of code bloop(rj,cj) = J1(i,j). I tried it a lot and changed the numbers, but the error remains.
The Error is Index in position 2 exceeds array bounds
bloop(rj,cj) = J1(...
- 1
0
votes
0
answers
118
views
trying to measure the diameter of a golf ball using regionprops from image-proc toolbox
I wrote a program that takes an image of a golf ball,
processing it to create a binary image that represents only the ball in white and
the rest of the picture (background) in black.
I want to use the ...
user13878703
-1
votes
1
answer
2k
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Error using ones Size inputs must be integers?
hello every one i have a problem with my code for error
r =[zeros(size(img2,1),size(img2,2)) ones(size(img2,1),size(img2,2)/2)];
where img2 an image of size [111 235]
Error using ones
Size inputs ...
- 19
1
vote
0
answers
262
views
Matlab: multidimensional array for images
I am new to the concept of multi-dimensional array and I am trying to apply it to the following image that I have:
What I would like to do is to create a 5D array as follow [number of boxes in a row, ...
- 150
1
vote
2
answers
532
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Matlab Gradient of depth image
I would like to know if it is possible to calculate the gradient of a depth image, given a depth array in Matlab, (i.e. calculate the distance between connected pixels, 2D array cells, in the depth ...
- 150
1
vote
1
answer
793
views
Fetching brightest pixel from a grayscale image
I have a grayscale image from which I need to find the top 0.1% brightest pixels.
I tried using a max function on 0.1% of the pixels but it is not giving me correct results.
Code:
[m,n]=size(image)...
- 71
1
vote
1
answer
2k
views
passing an array as an index to another array?
alright so I'm writing some code used for image processing and most of it is converted from some old matlab code for the same process. At the point I'm at now(the final step in the process) I need to ...
1
vote
0
answers
42
views
How do I test and invalidate points close to the image border?
I have the indices of several points of interest in a 3d image
PIdx = [864, 865,866,867,868,869,870,871,872,873,874,2068,2079,3327];
I am to perform certain operations at each of these points – one ...
- 47
1
vote
2
answers
2k
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How to Get pixel Intensity Values Matrix
I want to get the closer look of images pixels and also the pixel value matrix (which usually ranges 255 integer values I think).
Do I need Matlab, or any other program/framework? (I am a Computer ...
- 23
0
votes
1
answer
33
views
Can I output text/variables that are not part of a graph to a figure window?
In Matlab Can I output text/variables to a figure window that are not part of a graph? For example.
I have a image that I am running a filter through. I want to display the new image with ...
- 279
0
votes
1
answer
58
views
How do I replace pixels that meet a distance criteria?
I have the image:
A = [3 1 1 2 2
0 0 0 3 2
0 0 3 3 2
1 1 1 1 2
1 1 1 2 2];
From the image I obtained the following matrix:
B = [1,1; 3,3; 2,4; 3,4];
Now, I want to test the ...
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