Rank: 1141 based on 129 downloads (last 30 days) and 2 files submitted
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Jaap de Vries

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FM Global

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Senior Research Scientist


 

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31 Aug 2012 Screenshot barrel and pincushion lens distortion correction I = LENSDISTORT(I, k)corrects for radially symmetric distortions Author: Jaap de Vries image processing, mathematics, optics, lens distortion, abberation, barrel distortion 102 15
  • 4.125
4.1 | 8 ratings
21 Aug 2012 Screenshot Planck's Law SPECEXITANCE Calculates the spectral radiant exitance for a black body (W/m^2·µm) Author: Jaap de Vries measurement, physics, radiation, optics, infrared 27 3
Comments and Ratings by Jaap de Vries View all
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20 Feb 2014 struct2csv Output a structure to a .csv file, with column headers Author: James Slegers

Very Nice Job!!!!

You saved me a ton of time today.
One nice addition would be a possibility to put a second row with units below row one that show the fields. I notice that many of my engineering data files have two header lines; one width the field names and the second line with the units.

10 Dec 2013 export_fig Exports figures nicely to a number of vector & bitmap formats. Author: Oliver Woodford

I got it fixed, code works great!!
When I set the background transparent the part inside the graph remains white, while the sections outside the axis become transparent, any tips?

Regards,

Jaap

10 Dec 2013 export_fig Exports figures nicely to a number of vector & bitmap formats. Author: Oliver Woodford

add...

Error using print
Too many input arguments.

10 Dec 2013 export_fig Exports figures nicely to a number of vector & bitmap formats. Author: Oliver Woodford

I am really looking forward to using this code but I keep getting the following error...

export_fig 'test.jpg'

Error in print2array (line 140)
print(fig, renderer, res_str, '-dtiff', tmp_nam);

Any help would be apreciated.

Regards, Jaap

14 Nov 2013 barrel and pincushion lens distortion correction I = LENSDISTORT(I, k)corrects for radially symmetric distortions Author: Jaap de Vries

Sina, do you have an image with radial distortion? barrel or pincushion.

if so, import the image and assign to a variable (e.g., I)

Then aply correction I2 = lensdistort(I, 0.1) play with the 0.1 to get the wanted effect.

Diffrerent algorithms are available if you wish too.

Comments and Ratings on Jaap de Vries' Files View all
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02 Nov 2014 barrel and pincushion lens distortion correction I = LENSDISTORT(I, k)corrects for radially symmetric distortions Author: Jaap de Vries Jacques Nel

Matthijs, baie dankie! How do you know those are the correct settings for GoPro Hero 3? Of course they work, but is there a way to know them without using trial and error? Thanks!Jaap, thanks a lot!

30 Sep 2014 barrel and pincushion lens distortion correction I = LENSDISTORT(I, k)corrects for radially symmetric distortions Author: Jaap de Vries Wern-Juin Choy

09 Jun 2014 barrel and pincushion lens distortion correction I = LENSDISTORT(I, k)corrects for radially symmetric distortions Author: Jaap de Vries Ken

18 Mar 2014 barrel and pincushion lens distortion correction I = LENSDISTORT(I, k)corrects for radially symmetric distortions Author: Jaap de Vries Brooke

Does anyone's images get the edges chopped off when using the 'undistortimage' tool? If so how can I fix this to where my whole image is shown and not a cropped version. Thank you!

19 Nov 2013 barrel and pincushion lens distortion correction I = LENSDISTORT(I, k)corrects for radially symmetric distortions Author: Jaap de Vries Sina Tebianian

Thanks Jaap. Yes, my images have pincushion distrotion and should be corrected. I saw that lensdistort(I,k) works well for small pincushion distortions specially for the central part of the image. The edges get the opposite effect of Barrel. I can send you a sample image I started working on as an example. How I can I use the other algorithms?

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