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How can I snap my data point to the border for a colormap/heatmap?
pcolor() does not show all the values as pixels/tiles. It leaves off the last row and column. Or, actually, it has the pixels ...

8日前 | 1

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Distance between several defects/points
Try this: % Initialization steps. clc; % Clear the command window. close all; % Close all figures (except those of imtool...

8日前 | 0

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how to draw 3d histogram of an image ad shown in figure
This is done by the histogram2() function. Check out the help for examples. Let us know if you can't figure it out for your da...

8日前 | 0

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How to get the bright areas separately from an image?
Can you divide the later image by an earlier one? The ratio in the regions where the intensity went up faster than the rest of ...

8日前 | 0

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Different Values of Bounding Boxes for different classes.
I don't think so. If the bounding box was [0], it would not even have produced that bounding box in the first place.

8日前 | 1

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How can I save ROI parameters from DrawFreehand and load it onto another image?
Here is what I do: % User draws curve on image here. hFH = drawfreehand(); % Get the xy coordinates of where they drew. xy =...

8日前 | 0

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Extracting external Boundary from Binary Image generated from noisy RGB
What do you think of this: % Demo by Image Analyst. clc; % Clear the command window. close all; % Close all figures (exce...

10日前 | 0

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Finding when signal goes below threshold
Can't you just mask it, like indexes = above_threshold & baseline_waves; then examine that logical with find() or strfind()? ...

10日前 | 0

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Extract Red Line From JPEG
Try the Color Thresholder on the Apps tab of the tool ribbon. From there you can export code for a function that you can then c...

10日前 | 0

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Filter centroids to find only those of interest in binary image
If you know the rows and columns outlining your box you can erase the image inside that box before computing the centroids mask...

10日前 | 0

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Index exceeds the number of array elements (1).
for k = 1 : numel(h_im) % the length is 3072 a(k) = w_im{k}(x,y) - h_im{k}(x,y); end and if dl > 0 ...

10日前 | 0

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Newton's Method Plot of Errors
You need to index err: err(i) = abs(x - xold); Otherwise it's just a scalar, not a vector with 9 elements because you're overw...

11日前 | 0

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extracting values from a matrix or vector
Consecutive in what way? Consecutive in value or index location? None of those numbers are consecutive in their values. Why t...

12日前 | 1

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How to activate MATLAB for non-administrator users?
If you want to solve it NOW, then you'll call them on the phone NOW and talk to a real live person.

12日前 | 0

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Why do all my points not all plot at the same time?
Your for loop needs an "end". And comment out firugre(1) - not sure if that messes up the hold now, plus it's not needed. Also...

12日前 | 0

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How to activate MATLAB for non-administrator users?
Should not be a problem. If you have trouble with installation or running it after installation, see the FAQ: https://matlab.f...

12日前 | 0

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How change the axes labels and axes range of each plot of one figure?
Try this (untested): fontSize = 20; subplot(1, 2, 1); imshow(yourImage, 'Parent', h1); title(h1, 'Magnitude Scalogram', 'Fon...

12日前 | 0

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Randomly deforming my curve
Try this: % Initialization steps. clc; % Clear the command window. close all; % Close all figures (except those of imtool...

12日前 | 1

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How to Segment a image object based on edge points ?
You should be able to just threshold and call bwlabel. [labeledImage, numRegions] = bwlabel(grayImage > 0, 4); I'm not sure ...

12日前 | 0

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Extracting external Boundary from Binary Image generated from noisy RGB
If you just want the top pixel of the quarter image, you can simply scan the image column by column looking for the first pixel ...

12日前 | 1

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how to set x-axes in a histogram of gray scale image and how to see if the image is saturated (12 bit)
If the maxcount is 2123959, then that just means that the highest bin has a y value of 2123959. That bin could be anywhere alon...

12日前 | 0

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How to Segment a object's based on color pixel value ? and how to labelling it ?
You can use the Color Thresholder on the Apps tab of the tool ribbon. Tell it to export the code. Then you can pass the mask i...

12日前 | 0

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Animate a rectangle, for loop used
Use the rectangle() function. Get it's handle so you can delete the old one when you want to place a new one.

12日前 | 0

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How to plot this graph on Matlab?
You can use rectangle() to plot the circle and oval. You can use text() to place text labels on the plot.

12日前 | 2

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Nuclear norm coding issue
In plot([1 : 50:(m*n)], SuccessRate(2:9)) SuccessRate(2:9) has 8 elements. Does x have 8 elements? What does this show leng...

12日前 | 0

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optimization of scobel image processing - better approach needed
Here is what I have so far: % Demo by Image Analyst clc; % Clear the command window. close all; % Close all figures (exce...

13日前 | 0

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optimization of scobel image processing - better approach needed
What happens if you try stdfilt(), or look at the vertical profile by summing the image horizontally?

13日前 | 0

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Trying to get the angles at each time step. The angles should be in radians 0 to pi. From my loop, the angles are qs, qe, qw. Each time we get a new angle by adding the q_dot. I am getting angle 10^4 , which does not make sense.
If you want equal spaced angles, and a certain number of them, do this: allAngles = linspace(startingAngle, endingAngle, number...

13日前 | 0

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Find quasi-periodic peak locations from noisy photon count data
I'm attaching a demo where you can specify how many Gaussians are in your signal and it will find them. If you don't know how m...

13日前 | 0

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Image processing - calculate center mass and its initial moment
Call regionprops(binaryImage, 'Centroid') binaryImage = bwareafilt(binaryImage, 1); % Take largest only. props = regionprops(b...

13日前 | 0

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