Samsung Electronics Co., Ltd.

Massachusetts Institute of Technology

Rohit Pandharkar

Ramesh Raskar

Byung-kwan Park

Andreas Udo Velten

Ghulam Ahmed Kirmani

In exemplary implementations of this invention, a time of flight camera (ToF camera) can estimate the location, motion and size of a hidden moving object, even though (a) the hidden object cannot be seen directly (or through mirrors) from the vantage point of the ToF camera (including the camera's illumination source and sensor), and (b) the object is in a visually cluttered environment. The hidden object is a NLOS (non-line-of-sight) object. The time of flight camera comprises a streak camera and a laser. In these exemplary implementations, the motion and absolute locations of NLOS moving objects in cluttered environments can be estimated through tertiary reflections of pulsed illumination, using relative time differences of arrival at an array of receivers. Also, the size of NLOS moving objects can be estimated by backprojecting extremas of NLOS moving object time responses.

Methods and apparatus for estimation of motion and size of non-line-of-sight objects

Provided are an apparatus and method for processing a light field image that is acquired and processed using a mask to spatially modulate a light field. The apparatus includes a lens, a mask to spatially modulate 4D light field data of a scene passing through the lens to include wideband information on the scene, a sensor to detect a 2D image corresponding to the spatially modulated 4D light field data, and a data processing unit to recover the 4D light field data from the 2D image to generate an all-in-focus image.

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Pune, India

Rohit Pandharkar