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2
votes
1answer
27 views

Questions about log polar transform

I read various papers about the log polar transform and its application on template matching with images and have some questions: In "Image Registration Using Log Polar Transform and Phase ...
4
votes
0answers
66 views

How to tell how likely a signal is present in another one? (variance unknown)

I know this is probably a simple question, but I haven't been able to find a satisfactory answer anywhere... Say you have a time series signal of finite length N. Call it $y[n]$. It is stationary, ...
1
vote
0answers
63 views

How to recognize a zebra crossing from top view using OpenCV?

How to recognize a zebra crossing from top view using OpenCV? It is not a straight zebra crossing - it has some twists and turns. I have some ideas: parallel line detection, but the available ...
7
votes
3answers
778 views

Scale and Rotation invariant Template Matching

I'm looking for a method for scale and rotation invariant Template matching. I already tried some, but they didn't work so good for my examples or took for ever to execute . SIFT and SURF Feature ...
0
votes
0answers
74 views

3D medical image mask partial registration

I would like to partially register two binary masks. By "partially register" I mean that one of the masks is a subset of the other. These masks are produced by a segmentation procedure, applied to two ...
0
votes
0answers
298 views

rotation and scale invariant phase correlation(FFT)

I have code that stitch 2 images or it can be used for template matching, it uses fftw+opencv. If I want to use scale pyramid, how many scales I must choose according to the size of image and how ...
10
votes
1answer
119 views

Advise on detecting anatomical landmarks in a CT reconstructed volume

I'm trying to automatically detect some medical defined anatomical landmarks in a CT reconstructed volume. Medical doctors use these landmarks to measure some patient specific parameters. I have ...
11
votes
2answers
329 views

Necessary image processing operations before template matching

Well, this may show I didn't take image processing class. I have this template to match an object in images. But real object in images, for example, does not look like that but the second image. What ...