Modeling Blurred Video with Layers (ECCV 2014)

20 July 2014

01:59

Modeling Blurred Video with Layers Wulff, J. and Black, M.J., European Conference on Computer Vision (ECCV), September 2014. pdf: http://files.is.tue.mpg.de/black/papers/WulffECCV2014.pdf Abstract: Videos contain complex spatially-varying motion blur due to the combination of object motion, camera motion, and depth variation with finite shutter speeds. Existing methods to estimate optical flow, deblur the images, and segment the scene fail in such cases. In particular, boundaries between differently moving objects cause problems, because here the blurred images are a combination of the blurred appearances of multiple surfaces. We address this with a novel layered model of scenes in motion. From a motion-blurred video sequence, we jointly estimate the layer segmentation and each layer's appearance and motion. Since the blur is a function of the layer motion and segmentation, it is completely determined by our generative model. Given a video, we formulate the optimization problem as minimizing the pixel error between the blurred frames and images synthesized from the model, and solve it using gradient descent. We demonstrate our approach on synthetic and real sequences.