If a physical object has a smooth or piecewise smooth boundary, its images obtained by
cameras in varying positions undergo smooth apparent deformations. These deformations …

The amount of user-generated multimedia content (UGC) has increased rapidly in recent
years due to the ubiquitous availability of smartphones, digital cameras, and affordable …

This note is devoted to a mathematical exploration of whether Lowe's Scale-Invariant
Feature Transform (SIFT)[21], a very successful image matching method, is similarity …

The number of lecture videos available is increasing rapidly, though there is still insufficient
accessibility and traceability of lecture video contents. Specifically, it is very desirable to …

Videos accompanied by documents—document-based videos—enable presenters to share
contents beyond videos and audience to use them for detailed content comprehension …

The corresponding point coordinates determined by classic image matching approaches
define local zero-order approximations of the global mapping between two images. But the …

We describe a robust and efficient method for automatically matching and time-aligning
electronic slides to videos of corresponding presentations. Matching electronic slides to …

This paper presents a method to automatically detect slide changes in lecture videos. For
accurate detection, the regions capturing slide images are first identified from video frames …

SIFT (scale invariant feature transform) features have been one of the most efficient
descriptors for object recognition. However, the excessive number of key points and high …

We develop a general framework to automatically match electronic slides to the videos of the
corresponding presentations. The synchronized slides support indexing and browsing of …