Question

Increasing the resolution of a grayscale image 16-times the original
Say that you were required to increase the resolution of a `grayscale` image by `16` times. How would that be done in `MATLAB`? ...

ungefär 11 år ago | 1 answer | 0

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Question

Increasing the resolution of a grayscale image
I have a grayscale image which I need to increase its resolution, how can I do that in `MATLAB`? Thanks.

ungefär 11 år ago | 0 answers | 0

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answers

Question

Coverted a grayscale image to binary, but....
I have a `grayscale` image which I have converted to `binary`. But, when I `imwrite` it, I don't get a `binary` image. That is, ...

ungefär 11 år ago | 1 answer | 0

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Question

When I write the image it appears black
I have a program that returns a `grayscale` image. But, when I try to write the image, it appears totally `black`. Why is that? ...

ungefär 11 år ago | 0 answers | 0

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Question

Representing the result in grayscale
I'm working with <http://www.mathworks.com/matlabcentral/fileexchange/41967-fast-segmentation-of-n-dimensional-grayscale-images ...

ungefär 11 år ago | 2 answers | 0

2

answers

Question

What does this mean in MATLAB?
I have came about a MATLAB code like the following: xyz = imfilter(A,B); xyz_subsample = xyz(1:2:size(xyz, 1), 1:2:size(...

ungefär 11 år ago | 2 answers | 0

2

answers

Question

Segmenting an image according to cluster centers
Say that I want to use specific cluster center values in the <http://www.mathworks.com/help/fuzzy/fcm.html fcm> function? Can I ...

ungefär 11 år ago | 0 answers | 0

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Question

Assigning index of elements
I have the following `for-loop` part of a function: for i=1:5 for j=1:2 m=x(i)-c(j); end end As a ...

ungefär 11 år ago | 0 answers | 0

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Question

Segmenting an image according to a cluster center
I came to a statement while reading a paper in the meaning of: `segmenting an image according to an optimum cluster center`. ...

ungefär 11 år ago | 2 answers | 0

2

answers

Question

Segmenting an image according a threshold
Say that I have a grayscale image, which values range from `[0,255]`. Say that I want the pixels which values are larger than or...

ungefär 11 år ago | 2 answers | 0

2

answers

Question

Giving certain pixels a colour
For an image I have, how can I do the following in MATLAB? - Giving the pixels with values 100 for instance the colour green ...

ungefär 11 år ago | 1 answer | 0

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Question

Cell arrays in MATLAB
I know what a cell array is. I just came to the following line: cell_array = cell([], 1); What does that mean? How can we re...

mer än 11 år ago | 3 answers | 0

3

answers

Question

Minimum distance classifier code
I'm trying to look for a `minimum distance classifier` in `MATLAB`. I have been looking but didn't find any yet. Do you know of ...

mer än 11 år ago | 1 answer | 0

1

answer

Question

Filling a specific region with a colour
Is there a way in MATLAB to fill a specific region with some colour? I looked at roifill, but wasn't clear if it does the work? ...

mer än 11 år ago | 3 answers | 0

3

answers

Question

Selecting all pixels except one pixel
Say that we have a 3x3 matrix. If we type x(:), this will select all the elements in the matrix, right? How can we select all...

mer än 11 år ago | 1 answer | 0

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Question

Rotating an output image
I have got a result for an image, and, when I compared the result to a ground truth, I noticed that the output is like a mirror ...

mer än 11 år ago | 1 answer | 0

1

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Question

Selecting the most repeated value
Say we have the following matrix: > x=[2 3 2; 4 2 3; 4 2 3; 6 43 32]; And, we do the following, such that `a` shows h...

mer än 11 år ago | 1 answer | 0

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Question

Converting an image with specific values to black and white
I have an image that has only three values(i.e; 56, 98, 170). Those values represent different labels. How can I convert such im...

mer än 11 år ago | 1 answer | 0

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Question

Example on cluster labeling
Can you show me an example on how we can use matlab to label clusters we have for an image? Thanks.

mer än 11 år ago | 0 answers | 0

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Question

Measuring the distance to specific pixels
In `matlab`, I know that I can calculate the distance between points (i.e; pixels) between two images using `pdist`. But, the...

mer än 11 år ago | 0 answers | 0

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Question

How to check how long implementation time took
Is there a way in `matlab` (i.e; function) to check how long your program took to finish running? Thanks.

mer än 11 år ago | 1 answer | 0

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Question

??? Cell contents reference from a non-cell array object.
At the following line of code: p(ismember([four_neighbourhood_cell_array{:}],[C.(sprintf('C%d',k)){:}]) == 1) = membersh...

mer än 11 år ago | 1 answer | 0

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Question

Comparing histograms using discriminate analysis
I have some histograms that I would like to compare using discriminate analysis (DA). Can I do that in matlab? Thanks.

mer än 11 år ago | 0 answers | 0

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Question

Matlab "save" and saving memory
For example, I'm trying to run a program, and since I'm having a while-loop in that program where in each iteration a new empty ...

mer än 11 år ago | 0 answers | 0

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Question

Complement of a vector
Say I have a vector with some values, and I want to create a new vector that is the complement of that defined set. How can I do...

nästan 12 år ago | 1 answer | 0

1

answer

Question

What does this matlab error mean
I was trying to run a program in `matlab` where I have used `imdilate`, but got the following error which I actually didn't unde...

nästan 12 år ago | 2 answers | 0

2

answers

Question

Differences in using pdist
In using `pdist` in `matlab`. What is the difference between the use of these two forms (notice (,) & (;)? >> pdist([x,y]...

nästan 12 år ago | 1 answer | 0

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Question

4-neighbourhood - Where did those values come from?
Say we have the following matrix `x`: >> x = [1 4 3; 6 4 3; 6 9 3; 2 4 3; 5 4 0; 5 3 1; 6 4 7] x = ...

nästan 12 år ago | 2 answers | 0

2

answers

Question

Selecting that pixel that minimizes the distance
Say I have the following two matrices: >> x = [1 4 3; 6 4 3; 6 9 3; 2 4 3; 5 4 0; 5 3 1; 6 4 7]; >> y = [0 0 1; 1 1 ...

nästan 12 år ago | 0 answers | 0

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Question

Substituting values in a matrix
Say I have the following two matrices: >> x = [1 4 3; 6 4 3; 6 9 3; 2 4 3; 5 4 0; 5 3 1; 6 4 7]; >> y = [0 0 1; 1 1 ...

nästan 12 år ago | 1 answer | 0

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