Answered
how to estimate the density of each pixel in the image?
I am not sure what you mean, but if it is the intensity of a pixel, you can access that as follows: intensity=yourimage(50,...

7 years ago | 0

Answered
overlay to image matrix together
It depends a lot on your images and what you exactly want, but did you try to just sum them? overlay_im=image1+image2; I...

7 years ago | 0

Answered
how to choose weight (lamda)value for thresholding based intensity contrast and variance?
For the modulus you should check this link: http://lmgtfy.com/?q=matlab+modulus

7 years ago | 0

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Answered
Find a series of consecutive numbers in a vector
The following will give the lengths of the consecutive sequences of your vector: q=yourvector; a=diff(q); b=f...

7 years ago | 5

Answered
how to access zip files in the directory?
Using the 'dir'-command you can obtain a list of files. In your case you could use something like: filelist=dir('DATA/*....

7 years ago | 0

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Answered
changing values of pixels in an image pixel by pixel ( Thresholding )
Hi, First I don't understand how your original image can have non-integer pixel values, because it seems your image is 8-bit ...

7 years ago | 0

Answered
Change amount of ticks on a colorbar
The 'YTick' property contains the locations of the ticks on the Y axis, so I guess that set(cbr,'YTick',20:2:50) should...

7 years ago | 4

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Question


Dummy error in parfor
Hi, While running a parfor loop i am getting the following error: Caught-error breakpoint was hit in ParallelException...

7 years ago | 1 answer | 0

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answer

Question


Sparse for arrays with lots of NaN.
Hi, I am using very large arrays containing a lot fo NaNs. If they were zeros, I could use 'sparse' to save a lot of memory, ...

7 years ago | 1 answer | 2

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answer

Answered
HOW TO WRITE SUMMATION FORM ∑_(i=1) (L-1)
Make an appropriate vector with the values that you want to sum (or select the values from an array containing them) and use the...

7 years ago | 0

Answered
Hi, guys, I am trying to create a MATLAB Subrountine, but I faced some problems. My code is not working, and I don't know what is wrong with it.
Try to remove the first three lines ('clc', 'clear' and the empty line), then rename your file, or function, so that the filenam...

7 years ago | 0

Answered
Average curve for a set of curves
Maybe you can use interpolation (help interp has an example) to generate Y data for a common set of X points, based on your orig...

7 years ago | 0

Answered
How to convert Nan to zero
To set all NaN in Q to zero: Q(isnan(Q))=0; Is that what you need?

7 years ago | 35

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Question


Parfor reports error which does not exist when running as a for-loop
Hi, To speed up some calculations I am using a parfor-loop. I have to run calculations on many files and I made a simple parf...

7 years ago | 2 answers | 1

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Answered
How to change the colour of the backgroud
It depends on what type of image you have, but let's say it is a 8-bit grayscale image. In that case you can do the following: ...

7 years ago | 0

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Answered
Is there any matlab code to get time and date from Internet?
Take a look at this: http://www.mathworks.com/matlabcentral/fileexchange/20693-atomic-reminder It has a function where the...

7 years ago | 1

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Answered
doubt regards of centroid
It seems that your labeledImage contains 40 different objects. All of those objects will have a centroid and that's why you get ...

7 years ago | 0

Answered
sigmoid function value for parameter a and b
Well, if the only requirement is that y0 < 0.5 for x=0 and y1 > 0.5 for x=1, then for 0 < b < 1 and a > 0 it should work.

7 years ago | 1

Question


Multi-dimensional version of bwboundaries
Hello, I am trying to get the boundaries of objects in a three-dimensional array. For 2D data, the bwboundaries functio...

7 years ago | 2 answers | 0

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