how to show only match features in SIFT algorithm

i calculate the features of 1st image ( pic of mobile phone) and save it. then i calculate the features of 2nd image in which mobile phone is present with some other objects. now how do i show only the matched features of these 2 images so that mobile phone can be highlighted as my required object?

Answer 1

[Image Analyst]

What code are you using? I don't believe the Computer Vision System Toolbox has SIFT, but it has SURF, which, from what I've seen, is pretty much the same in the end as SIFT, but it's a lot faster so that's why it's used more. Would you consider switching?