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How do I calculate the histogram within a minimum bounding box, along the orientation of the rectangle? Let say I have the coord...

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Asked 5 months ago

I want to normalize the orientation and scale of these images before I do a similarity measure. How can I achieve this using PCA...

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Asked 1 month ago

How to get data gradient and how to locate significant changes of the gradient? I'm trying to locate the first "turning point" o...

How to count the pixels along the line (red) that is perpendicular to the major axis (blue) of a region, without rotating the im...

Below is a scatter plot from array that I get using boundary(). How can I get a region so that I can use regionprops() to find t...

The first sample is excluded despite being the maximum in findpeaks(). How to exclude the last peak? <</matlabcentral/answers...

How to find the first y value (in red) efficiently in each column of the image below? <</matlabcentral/answers/uploaded_files...

What is the most efficient/fastest way to find the circled local minimum below, the lowest minima between two highest peaks? The...

I have a .txt file with 3235K number of lines, and 25 space delimited columns. I use the following code to read the file: ...

Asked 4 months ago

I have a data array (13x5). The last column is the class (1-4) of each data. How do I randomly pick n-number of data from each c...

Is it possible to separate a blob into multiple regions and find out the centroid and major axis of each region? <</matlab...

Is there any existing function that: 1. groups pixels with similar value together 2. finds the main axis orientation of the r...

I would like to find the equation of a line that passes through the centroid of a blob so that I can divide the blob into half. ...

Asked 6 months ago

After segmentation, I found the boundary of a region with: k = boundary(x,y) How do I set equally distributed grid point...

I would like to add one-pixel padding to the border of a non-uniform region. Instead of looping each pixel and check its 8-pixel...

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Asked 2 days ago

How to separate a region by an equation. For example I want to find the region greater than the equation y = mx + c. <</matla...

Asked 30 days ago

I have 3-D points data as following. Could you suggest a way to locate the two features circled? I can use regression and dy/dx...

I want to reshape a vector that has 72322351 elements and I got the error: Error using reshape Size arguments must be real integ...