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max grosse

2010-08-16 13:34
Hartley and Zisserman describe the homography calculation (or estimation) very well in their wonderful book "Multiple View Geometry in Computer Vision". However, they suggest solving the equation system by using a singular value decomposition (SVD). Another possible solution is to ...
2010-06-06 17:18
For an assignment, I had to create a short stop-motion movie. Before starting to search for good software to aid the process of taking something like 600 photos, I decided to write a simple application by myself. Actually, I wanted ...
2009-09-16 20:11
I continued working on my automatic panorama creation software. For now, I tried a completely different approach than bundle adjustment which provides already some interesting results (see image). Still a lot to do, though!
2009-08-30 14:05
I started to re-implement (that is: copy) automatic panorama creation like described here. Instead of the patented SIFT however, I am using the free(?) SURF.

For now, I rely on OpenCV for almost all of the common algorithms, which appears ...

2009-08-30 14:04
There is are three popular functions in Adobe® Photoshop® called Auto Contrast, Auto Tone and Auto Color. I have to admit that I haven't done any real research on how the underlying algorithms work, I rather played around a ...
2009-07-01 16:04

Using OpenCV (with python) I wrote a little AR application that uses only some basic OpenCV functionality. I did this mainly to get a slight idea on the quality of my calibrated intrinsic and, of course, for the fun of ...
2009-05-13 16:34

Homographies are really useful. Often I need to take pictures of a projection onto a surface and usually this results in some perspective distortion. Using cvFindHomography, giving 'control points', a homography can be calculated and then the image can be ...
2009-05-05 00:12
Inverting an image in OpenCV is quite easy. No need to mess around with pointers. Actually, it can be done in a single line, with a single instruction:

1 cvXorS(input, cvScalar(255), output)