William Thielicke

Last seen: 1 day ago | Active since 2008

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Personal website: http://William.Thielicke.org Company website: http://www.Optolution.com Professional Interests: Animal locomotion, flow measurement techniques, micro air vehicles, robotics

Programming Languages:
Python, MATLAB, Visual Basic
Spoken Languages:
English, French, German
Professional Interests:
Image Processing Toolbox, Image Acquisition Toolbox

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Matlab Compiler: Is "userpath" always there and accessible?
Dear all, my compiled app needs to store some temporary files in the background. Is it safe to assume that the directory given ...

6 days ago | 1 answer | 0

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Question

Matlab Compiler Splash screens sizes, aspect ratio
There are two splash screen locations available in Matlab Compiler. One for the App itself, the other for the installer. I can't...

7 days ago | 0 answers | 0

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Submitted

PIVlab - particle image velocimetry (PIV) tool with GUI
Easy to use, GUI based tool to capture, analyze, validate, postprocess, visualize and simulate PIV data.

1 month ago | 1167 downloads |

Question

Warning: The next image file directory at byte position 944016033 is at or beyond the end of the file.
When i run the following command: imfinfo('PIVlab_panda_Cam01.tif'); I get the error message from the title. The image file i...

2 months ago | 1 answer | 0

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Error handling with graphical user interface
Hi, sometimes, a graphical user interface tool that I published crashes. This tool is often used by people that are new to Matl...

3 months ago | 1 answer | 0

1

answer

Question

Check code compatibility with older releases
Hi, I am wondering if there is a more or less efficient way to check backwards compatibility. Here is an example: I am using thi...

10 months ago | 2 answers | 0

2

answers

Question

Finding nice color bar limits automatically
Dear all, I have a plot with a colorbar. The limits of the color bar can't be adjusted automatically, because the plot is a bit ...

11 months ago | 1 answer | 0

1

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Question

ROI with hole, convert back to logical
Hi, I have a task that has probably been asked before, but I do not find something about this issue. I have a binary mask that...

1 year ago | 0 answers | 1

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Answered
How can i edit the points of a saved ROI?
I think I found the solution: figure imshow(imread('baby.jpg')) roi = images.roi.AssistedFreehand(Color="y"); draw(roi) The...

1 year ago | 0

Answered
Best way to export image / animation from GUI, including colorbar
I think I am close to a good solution: The function that does all the plotting / imagesc / scatter in the uifigure got an addit...

1 year ago | 0

Question

Best way to export image / animation from GUI, including colorbar
Hi, am am trying to export a graphics file from a uifigure. The plot has several layers and elements, and also features a colorb...

1 year ago | 1 answer | 0

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Question

Mac and Linux users, please support me with a very simple task (VideoWriter.getProfiles())
Dear Mac and Linux users, I am currently enhancing a piece of GUI software (PIVlab), and I want to allow the users to select one...

1 year ago | 1 answer | 0

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Answered
Image acquisition toolbox: Predict how many imgs can be buffered in RAM?
I found a solution. Here is the function that I use: function [max_possible_images] = PIVlab_capture_max_possible_images(ROI,bi...

1 year ago | 0

| accepted

Answered
try...catch for memory full error in imaq toolbox ?
I am getting a bit closer, I am able to display a messagebox with a suitable hint: clc imaqreset delete(imaqfind); %clears al...

1 year ago | 0

Question

try...catch for memory full error in imaq toolbox ?
Hi, I am recording data with an usb3vision camera. I am directly capturing to RAM. After a while, the memory of the computer is...

1 year ago | 4 answers | 0

4

answers

Question

Image undistortion with fixed camera position and single calibration image
Dear all, I want to undistort an image. The camera is fixed on a tripod. The camera captures the reflected light of particles w...

2 years ago | 2 answers | 0

2

answers

Question

Image acquisition toolbox: Predict how many imgs can be buffered in RAM?
Hello, I am looking for a way to predict how many frames (approx.) I can capture to the RAM of my computer using the image proc...

2 years ago | 2 answers | 0

2

answers

Question

Speed improvement of repeated cross-correlation of an "almost same area" ?
Hi, my question is probably more a mathematical one: I am calculating a cross-correlation of two sub-images to determine a disp...

2 years ago | 1 answer | 0

1

answer

Submitted

Keyword occurance in academic papers (google scholar)
This function gets the amount of hits for a specific keyword per year, using google scholar. Inspired by https://zenodo.org/reco...

2 years ago | 3 downloads |

Answered
Deblur image that has locally varying (but well known) motion blur
Dear Bjorn, thanks for your reply! I had a look at your code, but I think it will take me some more time to understand if I can ...

2 years ago | 0

Question

Deblur image that has locally varying (but well known) motion blur
Hi, I have an image where motion blur occurs due to long exposure photographing. I know the amount of motion blur for each pixel...

2 years ago | 3 answers | 0

3

answers

Question

Colorbar range inconsistent in high aspect ratio images
Hi, I am certainly doing sth wrong, but I wonder why Matlab displays different colormap limits when I change the colormap locati...

3 years ago | 1 answer | 0

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answer

Answered
How can I open MATLAB data files in the PIVlab app?
PIVlab sessions can only be opened in PIVlab. If you want to work in MATLAB, you can export the results as mat file from PIVlab....

3 years ago | 0

| accepted

Answered
imagesc: how to set NaN as white color
As this is still the first hit when searching on Google... The best solution IMHO: Setting data that is NaN to transparent se...

3 years ago | 6

Submitted

Webcam Realtime Motion Tracker
Example of how to track space-resolved motion in realtime from a webcam video stream.

3 years ago | 10 downloads |

Question

Sudden drop in speed for large matrices. RAM full -> Prevention?
Dear all, I am doing image analyses with a toolbox called "PIVlab". At work, we recently bought a new camera with 25 MP resolut...

3 years ago | 0 answers | 2

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answers

Question

cell2mat -> operation -> mat2cell : How...?
Hi, I have a cell aray that I need to convert to a 3D matrix, perform some operation, and then convert it back to the original c...

3 years ago | 1 answer | 0

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answer

Question

imwrite 12bit data?
Hello, I have a camera that gives me grayscale 12bit images. They are quite big, and the framerate is quite high, so I would lik...

3 years ago | 0 answers | 0

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Question

FEX: How to add links in the overview text?
Hello, I would like to have the text in my Matlab submission appear as a hyperlink: https://de.mathworks.com/matlabcentral/file...

3 years ago | 0 answers | 0

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Answered
'Clipping' the quiver plot
When anything uses "axis image", then it is not possible to disable clipping anmore... Is this desired behaviour? figure; imag...

3 years ago | 0

William Thielicke

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