Answered
ERROR installing 2019b
I'd click the Yes button. If that doesn't work, try the FAQ: During_installation.2C_the_installer_crashes.2C_hangs.2C_gives_an_...

8 days ago | 0

Answered
Create mask over image
To mask an image with a binary image, which will blacken the image outside where the mask is true: % Method to multiplication c...

8 days ago | 0

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How do I get values out of a scatter plot that are in between the data points
You could try spline() or interp1(). See attached demo. Red points are the original "knots" and the blue points are the inte...

8 days ago | 1

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Answered
I want to calculate m, b using the polyfit function over and over and over again.
Try this, where I plot b and m for all 100 trials, and do a scatterplot for trials 95 through 100, as you asked: % Initializati...

8 days ago | 1

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Answered
Cross correlation at 0 lag between two time series data sets
Isn't that just what the first example in the documentation for xcorr() does? Did you see it? Also use corrcoeff() to get the ...

8 days ago | 0

Answered
How to plot a graph? I'm getting a blank graph.
I'm not sure how long the loop takes, but it appears that it should take just milliseconds since I don't see any pause() command...

8 days ago | 0

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Answered
inexplicable GPU memory usage
I'm not sure if A gets converted to double after fft(), but you know that A will be complex and take up twice as much as a real ...

8 days ago | 0

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Make .wav signals same size?
See the FAQ: How_can_I_process_a_sequence_of_files? The "dir()" version of the code is probably what you want. So do the loop ...

9 days ago | 1

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Answered
the meaning of basic matlab words
Usually it's basically a variable that contains everything you need to interact with something, such as a graphical object displ...

10 days ago | 0

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Filling in cell area and counting cells
You can use imfill() and bwareafilt() or bwareaopen(): mask = imfill(mask, 'holes'); % Fill holes. mask = bwareafilt(mask, [30...

10 days ago | 0

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How to Improve Accuracy Of Finding Circularity Algorithms?
You might want to try deep learning.

12 days ago | 0

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Chessboard , Euclidean and City Block distance simplest codes(functions) for all order of matrix that i can understand as i am student and at start of this language.
There is a function bwdist() that computes distances of different definitions. What data are you starting with? Like two (x,y)...

13 days ago | 0

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Representing a pixel's color vector in 3D RGB space and transforming into 2D space
Did you try R = double(I(:,:,1)); G = double(I(:,:,2)); B = double(I(:,:,3)); C = (R + G + B) / 3; u = (2*C - G - B) ./ C; ...

13 days ago | 0

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Answered
how can I remove the regions in the edge map that are partially blocked along a line of sight of the centroid?
To get rid of the red and blue blobs, you need to identify which blob contains the right most, and top most, pixels. So simply ...

13 days ago | 0

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Smooth data for slowly-sampled data
Try sgolayfilt() in the Signal Processing Toolbox. That's one way. See my attached demo.

13 days ago | 0

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How do I detect colored objects in a picture?
Use the Color Threshold on the Apps tab of the tool ribbon. Use hsv color space and adjust the hue angle with the sliders, then...

13 days ago | 1

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Answered
How can i make automatic rotation using PCA to set the galaxies oriantation to be horizontal?
One way that does not depend on selecting a threshold for your image is to use the radon transform. Look how I used it to rotat...

13 days ago | 2

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making a multiple choice test with pictures that disappear using the compiler???
Of course. In short See the FAQ: How_can_I_process_a_sequence_of_files? Then in the loop imshow(filename) pause(10) % Displ...

13 days ago | 0

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how to derive 1D heat conduction
Homework help Click Here

13 days ago | 0

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How to detect bright thick fibers around boundary?
Zeynab, you need to segment out the lamellopodia. You can do this simply by thresholding the green channel. Then, get the area...

13 days ago | 0

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how to call a variable inside a function
Is this different than your post under your other account: Click here The code below works to count the letters in each state n...

13 days ago | 0

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Is it a bug?
Yes, you do have a bug in your program. You compared floating point numbers with == instead of ismembertol(). See the FAQ fo...

14 days ago | 2

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find mean of 2d slice in 3d segmented volume
Try this: [rows, columns, slices] = size(image3d); % image3d is your masked gray level image with some zeros in it. sliceMean...

14 days ago | 0

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Answered
Vector and matrix average
Nearly everyone would use mean, like they've told you. However if you want to do it like you said, using the sum and number of ...

14 days ago | 0

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Extracting center most submatrix from kspace
Pretty easy. Just get the coordinate of the cluster centroid, then use sort() to get the 32 points closest to the centroid. Is ...

14 days ago | 0

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how to write a programme in matlab comparing USA states name with english alphabets, and give the unmatch letter Q as a output.. ?
Not exactly sure what you're looking for but you might look at the functions contains() and strfind(): str = 'Arizona'; % Arizo...

14 days ago | 0

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Answered
How Finding location of an object on grid with Image Processing matlab
You need to use image segmentation to find the location of the colored blobs. See my attached demo where I track a green Sharpi...

14 days ago | 0

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What is Pixels and what is gray level value ? and how to calculate all distances between them
A pixel is an element of a matrix that represents something (like reflectance) of a certain scene. The gray level is the numeri...

14 days ago | 1

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Answered
How to filter similar objects with same brightness value?
Perhaps by it's vertical location in the scene. Wouldn't the bridge be the highest thing? Or perhaps by the shape (aspect rati...

14 days ago | 0

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convolution of two function
Looks like it's an edge effect where zeros outside the signal are getting convolved in when the signals start to not overlap any...

14 days ago | 0

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