Detection and Tracking of pixels in sequence of images

Hi. I am a MS student. I have set of problems and questions. 1. I am using "detectMinEigenFeatures" function. Mathematically whats the feature..? Is it the value of R..? I counld not find it in the function documentation. 2. I want detect corner features in a frame1. and then find the position of same pixels in the frame2. Then find corner features in frame 2, and find the same pixels in frame3. I want to use KLT tracker, but the problem is KLT tracks the same pixels in all the frames and needs initialization for each frame, which is not possible. How can we use KLT for this, and is there another efficient method for this problem..?

Your help would be highly appreciated..

[Adam]

Please try to remember to fill in the Products section when asking a question. It does help people to understand what the question relates to. In this case I have added the Computer Vision System Toolbox as the function you mention is not in base Matlab.