I am trying to extract features from an image, but I have failed to get the points that I want to extract, and hence my image fails to match with the template.
Are there any checkpoints that I have to go through before applying SIFT to my image so that I get good results? For example the template image is;
targeted image;
Answer
What you are supposed to do when matching a template to an image using sift is to run sift against your template and then look for those sift features in that arrangement in your scene.
Rule of thumb: Compare like to like.
Sift(Template) Contained Within Sift(Image)
You cannot tune Sift to extract the "features you want" Sift *uses invariant measures to find features that it believes are most salient. (*Chris A)
If you want it to find particular features from your template make smaller templates of those features and search for them.
Just a suggestion. I do not know exactly what type of template you are trying to fit to what type of scene or image.
No comments:
Post a Comment