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Benjamin Thompson


Last seen: Today Active since 2015

Programming Languages:
C++, C, MATLAB
Spoken Languages:
English

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  • 6 Month Streak
  • Revival Level 2
  • Knowledgeable Level 4
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Answered
enhance image quality for read Barcode
If your camera has autofocus, the reflection off the table below may be confusing it. Place something nonreflective with no hig...

4 días ago | 0

Answered
enhance image quality for read Barcode
Can you get a better photo? Can you read the barcode manually from this photo? You can use improfile to get something like thi...

7 días ago | 0

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Answered
How can I convert a file format FIG to PCD?
There is a function called pcwrite. The MATLAB documentation has a good article on it.

7 días ago | 0

Answered
Finding an element in table without using if_else condition
You can do some operations on the Table variables to get index vectors: >> Table_A.A ans = 3×1 string array "...

7 días ago | 1

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Answered
How to call c2000 library functions with the S-Function builder?
If you are using mex to compile this C code into a binary for Simulink to use as an S-Function block, you probably need to use t...

10 días ago | 0

Answered
Customized Library version management
Simulink libraries just have one version number for the whole thing just like Simulink model files. You can not version each bl...

25 días ago | 1

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Answered
[SOLVED ALREADY] Loop through data struct with variable names
You want to index into the structure array, then pass one of those array elements to the length function: >> S1.E1 = [1 1]; ...

25 días ago | 0

Answered
Using Matlab to open a text file
Looks like subl is not in your search path. You can use the system command to print out the search path that the MATLAB process...

25 días ago | 0

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Answered
Embedded coder 'Generate code only' not including toolbox files
If you have some other toolchain to compile the source code, you can locate the file in the MATLAB program files folder and incl...

26 días ago | 0

Answered
Getting NaN while using the ratio of power and factorial
The factorial function output increases very fast as input increases. See "doc factorial" for details. The output is "inf" for...

26 días ago | 0

Answered
How do I grab all the files with a certain name pattern from several folders?
The dir function will work with wildcard characters: D = dir(fullfile(myFolder, '*grab*'))

alrededor de 1 mes ago | 0

Answered
Image correction based on the mesh of projection surface
The image processing toolbox has only more basic geometric transformations, and computer vision has some camera calibration tool...

alrededor de 1 mes ago | 0

Answered
Video background removal in MATLAB by K-means clustering processing technique
I am not sure if it uses K-means clustering but vision.ForegroundDetector can support that type of application: https://www.m...

alrededor de 1 mes ago | 0

Answered
Why does my code bug down during while loop?
Have you tried the Profiler tool with your code? This can quickly highlite which parts take the most time. In this case line 2...

alrededor de 1 mes ago | 0

Answered
How to make matlab access two folders for data when separated by date
You can get file dates using the "dir" function or keyword in MATLAB. Does any of this help? >> D = dir D = 105×1 s...

alrededor de 1 mes ago | 0

Answered
Getting ginput to read axes on an appdesigner GUI
Here is a previous discussion on this topic: https://www.mathworks.com/matlabcentral/answers/392617-how-can-i-use-ginput-in-a...

alrededor de 1 mes ago | 0

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Answered
How do you use parameters with simulink coder?
You can change the parameter configuration using the Model Parameter Configuration dialog like below. But note that code from S...

alrededor de 1 mes ago | 0

Answered
Does Simulink Free Trial Version R2022a include Simulink coder and Embedded coder?
No you will need to request trials for those products separately.

alrededor de 1 mes ago | 0

Answered
Data Type Conversion in simulink
Type "doc fixedt" in MATLAB to get a detailed explanation of the fixed point data types. If I right click on the data type conv...

alrededor de 1 mes ago | 0

Answered
How to do +,-,*,/ with one scalar and one matrix(IN GUI)?
Addition and subtraction are the same. You can add or subtract a scalar from a matrix. Adding or subtracting matrices requires...

alrededor de 1 mes ago | 0

Answered
extracting road from lidar
Hard to tell without sample images but if the road is consistently a big black thing, use imclose to help make the edges solid a...

alrededor de 2 meses ago | 0

Answered
Divide Image into Overlapping blocks and save it
An image is just a matrix. If you want to save a part, then imwrite(img(1:2084,1:1042), 'file1.jpg', 'jpg'); imwrite(img(1042...

alrededor de 2 meses ago | 0

Answered
Detect ColorChecker chart in an image
You could pass a different value for Sensivity to colorChecker. By default it is 0.6. For information on supported color space...

alrededor de 2 meses ago | 0

Answered
Parameter Estimation in Simulink
You could look over this example: https://www.mathworks.com/support/search.html/videos/online-parameter-estimation-with-simul...

alrededor de 2 meses ago | 0

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Answered
How do I get the matrix of gray levels from the "from Video Device" in Simulink
Double click on the block and change the output color space option to "grayscale" if you can. Or, the Computer Vision Toolbox o...

alrededor de 2 meses ago | 0

Answered
uigetfile in appdesigner freezes MATLAB
uigetfile is supposed to open a file selection dialog box and let the user select a file? Do you not see that dialog box pop up...

alrededor de 2 meses ago | 0

Answered
I want to use mvnrnd for generating numbers,but there is error in my code
X has 31 columns. mu only has 2 columns since d == 2. Both need to have the same number of olumns. sigma needs to have the sa...

alrededor de 2 meses ago | 1

Answered
Why am I getting syntax
Missing two closing parenthesis it would appear. Is MATLAB suggestion not correct? You might do better breaking this up into m...

alrededor de 2 meses ago | 0

Answered
How to generate a 1D random walk of 100 sample paths, along with sample mean and variance?
Try this to take advantage of vectorization in MATLAB. I may be confused about how you define "walks" and "steps", and whether ...

2 meses ago | 0

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Answered
Matlab ginput mouse click freezes and does not obtain coordinates
Do not use ginput with AppDesigner. Here is some related discussion and some alternatives: https://www.mathworks.com/matlabcen...

2 meses ago | 0

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