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Dirk-Jan Kroon

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University of Twente

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Files Posted by Dirk-Jan View all
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02 Sep 2010 Screenshot B-spline Grid, Image and Point based Registration B-spline registration of two 2D / 3D images or corrsp. points, affine and with smooth b-spline grid. Author: Dirk-Jan Kroon registration, 2d, nonrigid, bspline, 3d, strain tensor 226 82
  • 4.75
4.8 | 12 ratings
30 Aug 2010 Screenshot Classic AdaBoost Classifier Weak threshold classifier boosted to strong Classifier with Adaboost Author: Dirk-Jan Kroon threshold, schapire, cascade, treshold, boosting, adaboost 190 0
30 Jul 2010 Screenshot OpenSURF SURF (Speeded Up Robust Features) image feature point detection / matching, as in SIFT Author: Dirk-Jan Kroon detector, chris evans, surf, evans, scale invariant featu..., distance 295 11
  • 4.0
4.0 | 3 ratings
27 Jul 2010 Screenshot Snake : Active Contour Snake Segmentation (Kass et al), 2D/3D including GVF and balloon force (Easy to read code) Author: Dirk-Jan Kroon contour, image, gvf, demetri, image force, snakes 281 1
27 Jul 2010 Screenshot Separate Kernel in 1D kernels Decompose an arbitrary N dimensional filtering kernel into 1D kernels, for faster filtering Author: Dirk-Jan Kroon matrix, 5d, conv2, gaussian, filter, decompose 49 1
  • 5.0
5.0 | 1 rating
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02 Sep 2010 OpenSURF SURF (Speeded Up Robust Features) image feature point detection / matching, as in SIFT Author: Dirk-Jan Kroon

*worker_matlab Ness,
Yes, there is documentation on the website of chrisevansdev.com.

Implementation description in, "Notes on the OpenSURF Library". Also a view papers with reviews of OpenSurf are available there.
30 Aug 2010 B-spline Grid, Image and Point based Registration B-spline registration of two 2D / 3D images or corrsp. points, affine and with smooth b-spline grid. Author: Dirk-Jan Kroon

* Tan Chye Cheah
See the example in the help op manually_warp_images.
(Note!, tomorrow a whole new version of code will be online)
30 Aug 2010 Viewer3D MIP, Color, Slice and Shaded 3D (shearwarp) Volume Rendering, interactive 3D view/measurement GUI Author: Dirk-Jan Kroon

*Kai Steppenwolf

If you select one dicom file from a dataset with a lot of files representing a 3D volume, then the program will automatically load also all other files to build the 3D volume.

Best Regards, Dirk-Jan Kroon

20 Aug 2010 B-spline Grid, Image and Point based Registration B-spline registration of two 2D / 3D images or corrsp. points, affine and with smooth b-spline grid. Author: Dirk-Jan Kroon

*Carl

bicubic-interpolation is available if you compile the c-code with compile_c_files. (not implemented in .m file because it would be really slow)

If you want to keep track of the forward affine matrix during registration, the best way is to put: M = inv(M); as first line in affine_transform.m and as first line in make_init_grid.m
19 Aug 2010 OpenSURF SURF (Speeded Up Robust Features) image feature point detection / matching, as in SIFT Author: Dirk-Jan Kroon

*eric,
Strange error. I don't think it is a bug in OpenSurf.

Maybe you can solve this by using
I = imread(('example.jpg','jpg') instead of I=imread('example.jpg') in your code.

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02 Sep 2010 OpenSURF SURF (Speeded Up Robust Features) image feature point detection / matching, as in SIFT Author: Dirk-Jan Kroon Evgeny

In Example 2 you can write shortly
This 2 rows
D1 = zeros([64 length(Ipts1)]);
for i=1:length(Ipts1), D1(:,i)=Ipts1(i).descriptor; end
Equivalent
D1 = reshape([Ipts1.descriptor],64,[]);

02 Sep 2010 OpenSURF SURF (Speeded Up Robust Features) image feature point detection / matching, as in SIFT Author: Dirk-Jan Kroon Kroon, Dirk-Jan

*worker_matlab Ness,
Yes, there is documentation on the website of chrisevansdev.com.

Implementation description in, "Notes on the OpenSURF Library". Also a view papers with reviews of OpenSurf are available there.
02 Sep 2010 OpenSURF SURF (Speeded Up Robust Features) image feature point detection / matching, as in SIFT Author: Dirk-Jan Kroon Ness, worker_matlab

Hello,
 wonderful work, there is a complete documentation?
02 Sep 2010 OpenSURF SURF (Speeded Up Robust Features) image feature point detection / matching, as in SIFT Author: Dirk-Jan Kroon Ness, worker_matlab

30 Aug 2010 OpenSURF SURF (Speeded Up Robust Features) image feature point detection / matching, as in SIFT Author: Dirk-Jan Kroon eric

Hello,
Still same error code. Would you please tell me how to run this?
Thank you very much.
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Files Tagged by Dirk-Jan View all
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Updated   File Tags Downloads
(last 30 days) 		Comments Rating
02 Sep 2010 Screenshot B-spline Grid, Image and Point based Registration B-spline registration of two 2D / 3D images or corrsp. points, affine and with smooth b-spline grid. Author: Dirk-Jan Kroon registration, 2d, nonrigid, bspline, 3d, strain tensor 226 82
  • 4.75
4.8 | 12 ratings
30 Aug 2010 Screenshot Classic AdaBoost Classifier Weak threshold classifier boosted to strong Classifier with Adaboost Author: Dirk-Jan Kroon threshold, schapire, cascade, treshold, boosting, adaboost 190 0
30 Jul 2010 Screenshot OpenSURF SURF (Speeded Up Robust Features) image feature point detection / matching, as in SIFT Author: Dirk-Jan Kroon detector, chris evans, surf, evans, scale invariant featu..., distance 295 11
  • 4.0
4.0 | 3 ratings
27 Jul 2010 Screenshot Snake : Active Contour Snake Segmentation (Kass et al), 2D/3D including GVF and balloon force (Easy to read code) Author: Dirk-Jan Kroon contour, image, gvf, demetri, image force, snakes 281 1
27 Jul 2010 Screenshot Separate Kernel in 1D kernels Decompose an arbitrary N dimensional filtering kernel into 1D kernels, for faster filtering Author: Dirk-Jan Kroon matrix, 5d, conv2, gaussian, filter, decompose 49 1
  • 5.0
5.0 | 1 rating

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