Image matching-based pointing techniques

摘要

Techniques are disclosed that can be implemented as a system configured for image matching-based pointing and/or selection from information presented in an image displayed by a projection device. A pointing device configured as described herein may be pointed at a target portion of an image displayed by a projection device and allowed to capture an image inclusive of that target portion. In turn, the captured image data may be compared with data pertaining to the original displayed image. The resultant pointing location data can be used to generate one or more pointing indicators within the original image, and the projection device may display the resultant annotated image on screen, in some cases in real time and/or with precision resolution of a single pixel. A subsequent user selection can be made based on the known location of the pointing indicator. The techniques provide for more native human-machine interaction than existing approaches.

主权项

1. A user interface system comprising:
a pointing calculation module configured to compare captured image data with original image data and to output pointing location data based on such comparison, the pointing location data signifying a target location within a displayed image generated from the original image data, wherein:
the captured image data comprises a digital image provided by a user pointing device pointed at the target location within the displayed image generated from the original image data, the digital image inclusive of at least a portion of the displayed image at which the pointing device is pointed; andin comparing the captured image data with the original image data, to identify the target location within the displayed image, the pointing calculation module is further configured to perform at least one of edge detection, pixel comparison, and matching of a center of the captured image with the target location within the displayed image; and a marking module configured to incorporate into the original image data a pointing indicator based on the pointing location data, the pointing indicator annotating the target location within the displayed image at which the pointing device is pointed.