Sharp Laboratories of America, Inc

Miao Liao

Petrus J L Van Beek

Xinyu Xu

Xiao-Fan Feng

Ahmet Mufit Ferman

Xu Chen

Xiaofan Feng

Soonhac Hong

Philip B Cowan

Ming Li

Aspects of the present invention are related to methods and systems for vision-based computation of ego-motion.

Methods and systems for vision-based motion estimation

Feature detection may be performed on an image. After feature descriptors for each detected feature are computed, feature matching between feature descriptors for the current image and for a key image frame is performed. If a sufficient number of good matches are identified, key points associated with the feature correspondences may be projected from image coordinates to world coordinates. A distance, in the world coordinate frame, between each feature correspondence may he computed. When the computed distances indicate sufficient movement of the mobile agent to ensure accurate motion estimation, a motion estimate may he computed from the pairs of world coordinates associated with the feature correspondences. A current camera pose in a global coordinate frame may be generated. A motion trajectory may then be determined and feature descriptors for the key image may be updated to the feature descriptors for the current image frame.

Methods and systems for mobile-agent navigation

A system and method are provided for autonomously navigating a vehicle. The method captures a sequence of image pairs using a stereo camera. A navigation application stores a vehicle pose (history of vehicle position). The application detects a plurality of matching feature points in a first matching image pair, and determines a plurality of corresponding object points in three-dimensional (3D) space from the first image pair. A plurality of feature points are tracked from the first image pair to a second image pair, and the plurality of corresponding object points in 3D space are determined from the second image pair. From this, a vehicle pose transformation is calculated using the object points from the first and second image pairs. The rotation angle and translation are determined from the vehicle pose transformation. If the rotation angle or translation exceed a minimum threshold, the stored vehicle pose is updated.

Autonomous navigation using visual odometry

Aspects of the present invention are related to methods and systems for autonomous navigation using visual landmark recognition.

Aspects of the present invention are related to methods and systems for autonomous navigation using visual-landmark recognition. One method may include scanning a captured image to detect a machine-readable marker and extracting encoded data therefrom. The data may include an identifying key usable to access a database to retrieve physical attributes associated with the marker. The method may include using the physical attributes to compute a position and an orientation of a mobile agent relative to a landmark object associated with the marker. The method may further include determining a path toward a next route location based on the position of the next route location and the computed position and orientation of the mobile agent and controlling the mobile agent to drive along the path toward the next route location.

A system that determines the task of the viewer and/or gestures made by the user. Based upon the determined task and/or the gestures, the lighting provided to the viewer may be modified.

Task light based system and gesture control

A display includes a display area that emits light and a border region surrounding at least a portion of the light emitting region. A light guide plate is overlaying the display area. A lighting module is operatively interconnected with the light guide plate to provide light to the light guide plate and positioned within the border region, and a one camera module is operatively interconnected with the light guide plate to sense light from the light guide plate and positioned within the border region. The display determines a position of a touch on the light guide plate by determining a location of frustrated total internal reflection within the light guide plate as a result of the touch on the light guide plate.

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Camas, WA, United States of America

Miao Liao