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Artiom Kovnatsky

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USI Università della Svizzera italiana

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10 Jan 2014 Screenshot Feature points in image, Keypoint extraction Finds, matches, plots feature points in images. Author: Artiom Kovnatsky harris, fps, fp, korners, feature points, image processing 182 11
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4.4 | 5 ratings
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30 May 2014 Surface Spherical Harmonic Functions Visualization Visualization of surface spherical harmonics on the sphere surface. Author: Dimitrios Piretzidis

10 Jan 2014 Feature points in image, Keypoint extraction Finds, matches, plots feature points in images. Author: Artiom Kovnatsky

Hi,
The problem with d2Fdxdy has been fixed, now d2Fdxdy = [ 1 0 -1; 0 0 0; -1 0 1 ]/4

Artiom

02 Dec 2010 Feature points in image, Keypoint extraction Finds, matches, plots feature points in images. Author: Artiom Kovnatsky

Hi,
yes, u right, need to be what u've written.
I'll change it.
Thank you.
:)

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18 Dec 2014 Feature points in image, Keypoint extraction Finds, matches, plots feature points in images. Author: Artiom Kovnatsky Haris

Iam unable to run both the codes. Kindly help me to run the codes.
In first code (demosift.m) it shows error
"harrispls" is not working for integer type of form unit8"

in second code (demoasift.m) it shows error:
Error using disp
Too many output arguments.
Error in demoASIFT (line 109)
[ HrLPointsTmp1 ] = harrislpls( imgSimulated, TypeOfNBHOOD, NBHOOD,
TypeOfCornerDetector, BorderDistanceMatrix, ThreshType, HarrisThresh, k, Dilate,
radius, sigma_nmbr, disp, SwitchWaitbars );

Kindly someone tell me the problem in this..I'll be really really obliged..

16 Dec 2014 Feature points in image, Keypoint extraction Finds, matches, plots feature points in images. Author: Artiom Kovnatsky Sanya

I have 2 doubts:

#1: I am using demoSIFT.m (on Windows)
img1: https://www.dropbox.com/s/q4p9df8dabtw6dr/img1.png?dl=0
and
img2: https://www.dropbox.com/s/6ifab90c9hl0ptv/img2.png?dl=0

I am pretty sure I am getting what I want, matching features. But I am not able to view the output clearly on my screen (both images together side by side showing matched features). The screen shot of my output is here: https://www.dropbox.com/s/4hruxm676evva8m/Output_screenshot.png?dl=0.
What parameter should I change?

#2: I am not able to run demoASIFT.m (with same images as input) Error message is:
>> demoASIFT
Error using disp
Too many output arguments.

Error in demoASIFT (line 109)
[ HrLPointsTmp1 ] = harrislpls( imgSimulated, TypeOfNBHOOD, NBHOOD,
TypeOfCornerDetector, BorderDistanceMatrix, ThreshType, HarrisThresh, k, Dilate,
radius, sigma_nmbr, disp, SwitchWaitbars );

What am I doing wrong?

Thank-you

16 Dec 2014 Feature points in image, Keypoint extraction Finds, matches, plots feature points in images. Author: Artiom Kovnatsky Sanya

@risky: you can run the demo .m files within the folder "Demos, scripts".
First feed img1 and img2. (img1 = imread(....); img2 = imread(...)).
Open the demo .m file and click on F5.

21 Oct 2014 Feature points in image, Keypoint extraction Finds, matches, plots feature points in images. Author: Artiom Kovnatsky risky

hay im new to matlab, can you tell me how to run the code ??

01 Jul 2014 Feature points in image, Keypoint extraction Finds, matches, plots feature points in images. Author: Artiom Kovnatsky Joyce

Hi,
why HrLOrntPoints and HrLPoints have different rows? Should HrLOrntPoints has same number with HrLPoints only one column added?

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