Digital image processing (2nd ed.)
Digital image processing (2nd ed.)
Local Scale Control for Edge Detection and Blur Estimation
IEEE Transactions on Pattern Analysis and Machine Intelligence
Bilateral Filtering for Gray and Color Images
ICCV '98 Proceedings of the Sixth International Conference on Computer Vision
Distinctive Image Features from Scale-Invariant Keypoints
International Journal of Computer Vision
A Comparison of Affine Region Detectors
International Journal of Computer Vision
Matching slides to presentation videos using SIFT and scene background matching
MIR '06 Proceedings of the 8th ACM international workshop on Multimedia information retrieval
Image deblurring with blurred/noisy image pairs
ACM SIGGRAPH 2007 papers
Rate-efficient, real-time cd cover recognition on a camera-phone
MM '08 Proceedings of the 16th ACM international conference on Multimedia
Automated lecture recording system with AVCHD camcorder and microserver
Proceedings of the 37th annual ACM SIGUCCS fall conference: communication and collaboration
Client-side backprojection of presentation slides into educational video
Proceedings of the 20th ACM international conference on Multimedia
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Restoring the fine detail in the slide area of a defocused lecture video is a challenging task. In this work, we propose to use clean images of slides available along with the defocused lecture video to help the restoration. Our proposed method uses local feature descriptors and multiple defocused slide decks to automatically identify the slide that is displayed in the defocused frame. We then use the matching slide as side information to estimate the parameters for deconvolution and bilateral filtering. Experimental results show that the proposed algorithm compares favorably to a computationally-intensive iterative deconvolution algorithm that does not employ any side information. In particular, it can recover small drawings and text that are severely blurred in a poorly focused lecture video