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# Happy PhD

Last seen: 3 maanden ago Active since 2018

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Question

How can i extract the numbers from string?
Im trying to extract the numbers from a cell array? How can i do this? cell array: filename = 1×12 cell array Colum...

3 maanden ago | 2 answers | 0

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Question

Saturation limit on 16 bit image in MATLAB
I have a series of images and I am trying to decide if its saturated or not. This is the intensity levels i got with code below ...

4 maanden ago | 1 answer | 0

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Question

How to save data to existing excel file
I am trying to save data in excel but I am having trouble with adding header to first row and then data beneath existing rows. ...

5 maanden ago | 4 answers | 0

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Question

How to find the coordinates from an convolution with an mask
Hi, I created an rectagular mask or elliptical mask that i rotate and convolute with an gray-scale image with some intensity c...

6 maanden ago | 0 answers | 0

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Question

How to create a rectangular mask based on current code for making an elliptical mask
I have an code that creates an elliptical mask and rotates it to a certain angle: for k = 0:180/deltaK:180-1 % Loop to Rotate...

6 maanden ago | 2 answers | 0

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Question

Automatic cropping of an image using threshold
I have an grayscale image with a intensity distribution. The peaks of the light might be at one locatoion or contain several pea...

8 maanden ago | 1 answer | 0

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How to read in several 16-bit images and store their filenames?
I solved it with this code: https://www.mathworks.com/help/matlab/import_export/process-a-sequence-of-files.html

9 maanden ago | 0

| accepted

Question

How to read in several 16-bit images and store their filenames?
I have a set of images in a folder that is16-bit and I want to load them into matlab, maybe into an array, to do some calculatio...

9 maanden ago | 2 answers | 0

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Question

Image warning about downscaling for preview?
Hi, I am using the Image Acquisition app and sometimes I use the preview with gigecam and I am getting the follwing error: War...

10 maanden ago | 1 answer | 0

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Can you get the maximal intensity of an frame in preview
Problem was solved by taking snapshot and find the maximal value in the frame.

10 maanden ago | 0

| accepted

Add legend in plot in Appdesigner
Solved the problem. I had to add legend(app.UIAxes); to make it visible.

10 maanden ago | 1

| accepted

Question

Add legend in plot in Appdesigner
Hi, I am doing some image processing and I like to plot the result for each added image as a new legend. Number of legends can b...

10 maanden ago | 1 answer | 0

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Question

Can you get the maximal intensity of an frame in preview
I am using preview for having an live feed of the camera. I would like to also display the maximal intensity of each frame with ...

10 maanden ago | 1 answer | 0

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Question

Place video stream inside of app designer
I have an code that i want to place inside of app designer. The code creates a window that shows the frames (live stream) of an ...

10 maanden ago | 1 answer | 0

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Question

Read and extract specific values from a textfile
Hi, I am trying to extact values at diffrent positions from a file with different type of lines. Example of some lines: t= ...

ongeveer een jaar ago | 1 answer | 0

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Question

How to do convolution of an image with many combinations of a mask, fast?
Hi, I have an normal size image (about 1200x1900) for which I have cropped to a smaller image, but for simplicity lets say i hav...

meer dan een jaar ago | 1 answer | 0

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Question

Error message using timer
Hi, Im having issues with my timers giving lots of error messages when being runned. Im using the timer to plot a capture ...

meer dan een jaar ago | 1 answer | 0

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Question

Saving image in correct format or how do I save only image-part of the figure?
I want to save the "image part" of the figure as .jpeg. That is, everwything that is inside of the axis (without the axis and th...

bijna 2 jaar ago | 2 answers | 0

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Question

how to set x-axes in a histogram of gray scale image and how to see if the image is saturated (12 bit)
Hi, I am trying to plot a histogram of a unit16 picture (actually its a 12 bit image) and plot the gray scale. I am interested t...

bijna 2 jaar ago | 3 answers | 0

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Question

How can I get the intensity sum of a circular region around a particular pixel?
I have two regions of light, in circles for which i want to calculate the intensity of region 1 (center circle) and region 2 (ou...

ongeveer 2 jaar ago | 1 answer | 0

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Question

Crop out a section of the image in imshow, how?
I have an image I, I want to crop out a section of the image so i dont use the whole image in the analysis. I have two coordin...

meer dan 2 jaar ago | 1 answer | 0

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Question

Saving figure in app designer.
Hi, I want to save a figure in app designer called app.ScanDataPlot. The code below saves the figure (but just the data, with ...

bijna 3 jaar ago | 1 answer | 0

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Question

how to create used input struct names
Hi. I created a struct, data = struct() I would like to add fields to it based on user input from app designer. For example...

bijna 3 jaar ago | 1 answer | 0

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Question

How to i reset/clear an figure in app designer?
I tried to write app.UIAxes.cla; or cla(app.UIAxes) but it doesn't do the job. Yes it clears the figure, but when I rep...

bijna 3 jaar ago | 2 answers | 0

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Question

How to build on an existing struct 4x4xn matrix?
I have an struct, for example... A = struct(); where we have a 4x4 matrix A.G = rand(4,4); I want to build on values with...

bijna 3 jaar ago | 2 answers | 0

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Question

figures are not opening
Hi, I have some figures I am saving to file from app designer. I am using code fig1.Visible = 'off'; to make the figures i...

bijna 3 jaar ago | 1 answer | 0

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Question

How to handle timer
I have a program in app designer, for which I have a camera that is showing live feed with a timer. See example below,.. ...

bijna 3 jaar ago | 1 answer | 0

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Question

Error with timer TimerFcn
Hi, am using an timer to plot my camera onto UIAxes. I am getting error everytime I stop the timer. I am getting the error te...

meer dan 3 jaar ago | 2 answers | 0

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Question

how to set exposuretime in appdesigner with EditField?
Hi, I am trying to change the exposure time with an Edit Field, but I am problem accessing the camera properties wihin the ap...

meer dan 3 jaar ago | 1 answer | 0