Ramsin Khoshabeh

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This paper presents a fast algorithm for restoring video sequences. The proposed algorithm, as opposed to existing methods, does not consider video restoration as a sequence of image restoration problems. Rather, it treats a video sequence as a space-time volume and poses a space-time total variation regularization to enhance the smoothness of the solution.(More)
We present Silicone iLluminated Active Peripherals (SLAP), a system of tangible, transparent widgets for use on vision-based multi-touch tabletops. SLAP Widgets are cast from silicone or made of acrylic and include sliders, knobs, keyboards, and keypads. They add tactile feedback to multi-touch tables and can be dynamically relabeled with rear projection.(More)
From a rectified stereo image pair, the task of view synthesis is to generate images from any viewpoint along the baseline. The main difficulty of the problem is how to fill occluded regions. In this paper, we present a new method for view synthesis that is both fast and accurate. Occlusions are filled using color and disparity information to produce(More)
We present a novel stereo video disparity estimation method. The proposed method is a two-stage algorithm. During the first stage, initial disparity maps are computed in a frame-by-frame basis. In the second stage, the initial estimates are treated as a space-time volume. By setting up an l<inf>1</inf>-normed minimization problem with a novel(More)
We describe a system that employs the use of an omnidirectional camera in tandem with a pan-tilt-zoom (PTZ) camera in order to characterize traffic flows, analyze vehicles, and detect and capture anomalous behaviors. The framework is such that we can generate long-term statistics of traffic patterns while still monitoring unusual activity, even apart from(More)
In the human visual system, proximity, similarity, and motion are fundamental attributes that group visual objects together locally. The objects grouped by these attributes are most likely to have the same depth. In previous works, proximity and similarity have been considered in the computation of image disparity maps. However, they are insufficient for(More)
Numerous attempts have been made to introduce three-dimensional (3-D) video systems into clinical routine, particularly for surgeries. The drawback with all of them thus far has been the fact that they require users to wear cumbersome glasses in order to receive the advantage of stereoscopy. In this study, we present, to our best knowledge, the world's very(More)
We present SLAPbook, an application using SLAP, translucent and tangible widgets for use on vision-based multi-touch tabletops in Single Display Groupware (SDG) environments. SLAP stands for Silicone ILluminated Active Peripherals and includes widgets such as sliders, knobs, keyboards, and buttons. The widgets and tactile feedback to multi-touch tables(More)
We present SLAP, a system of tangible, translucent widgets for use on FTIR-based multi-touch tabletops. Our initial widgets include a SLAP keyboard, button, slider, knob, and lens. SLAP widgets add tactile feedback to multi-touch tables, improving input accuracy. They can be relabeled dynamically via table rear projection, and provide inexpensive,(More)
This paper presents a fast algorithm for restoring video sequences. The proposed algorithm, as opposed to existing methods, does not consider video restoration as a sequence of image restoration problems. Rather, it treats a video sequence as a space-time volume and poses a space-time total variation regularization to enhance the smoothness of the solution.(More)