Identifying an object in a field of view
AssigneeUltrahaptics IP Two Limited
InventorDavid Holz
Life of this patent
Estimating the term…
Abstract
The technology disclosed relates to identifying an object in a field of view of a camera. In particular, it relates to identifying a display in the field of view of the camera. This is achieved by monitoring a space including acquiring a series of image frames of the space using the camera and detecting one or more light sources in the series of image frames. Further, one or more frequencies of periodic intensity or brightness variations, also referred to as ‘refresh rate’, of light emitted from the light sources is measured. Based on the one or more frequencies of periodic intensity variations of light emitted from the light sources, at least one display that includes the light sources is identified.
Claims19
A method of recognizing a display in a field of view of a camera, the method including:
- acquiring a series of image frames from the camera, the image frames including capturing an object within a field of view of the camera;
- detecting one or more light sources in the series of image frames;
- determining a rate of periodic change in brightness of the one or more light sources detected in the series of image frames;
- and
- recognizing the object in the series of images as a display within the field of view of the camera that includes the one or more light sources, the recognizing based on the determined rate of periodic change in brightness of the one or more light sources.
A method of recognizing a display in a field of view of a camera, the method including:
- monitoring using a camera, a space within the field of view of the camera;
- in response to a detection of one or more light sources in the space, determining a rate of periodic change in brightness of the one or more light sources detected in the space;
- and
- recognizing at least one object within the space as a display that includes the one or more light sources, the recognizing based on the determined rate of periodic change in brightness of the one or more light sources.
A system of recognizing a display in a field of view of a camera, the system including:
- the camera that captures a series of images including at least one object in the field of view of the camera;
- and
- an intensity analyzer running on at least one processor coupled to the camera, wherein the intensity analyzer:
- detects one or more light sources in the series of images;
- determining a rate of periodic change in brightness of the one or more light sources detected in the series of images;
- and
- recognizes the at least one object as a display in the field of view of the camera that includes the one or more light sources, the recognizing based on the determined rate of periodic change in brightness of the one or more light sources.
Dependencies are inferred from the claim text.