Close focus with GPU

Patent metadata

Field	Value
Publication number	US-9154686-B2
Application number	US-201314036222-A
Country	US
Kind code	B2
Filing date	Sep 25, 2013
Priority date	Sep 25, 2013
Publication date	Oct 6, 2015
Grant date	Oct 6, 2015

Abstract

Disclosed are systems and methods for focusing a digital camera to capture a scene. It is first detected that a change in a scene requires the digital camera to be focused or refocused. The camera focus is automatically scanned from a closest settable distance to farther distances until a first closest object in the scene is detected. Once the first closest object in the scene is detected, the camera focus is set at the distance of the first closest object and a finer scan is executed. In an embodiment, a dynamic movement threshold is calculated and used to determine that the change in scene requires the digital camera to be focused or refocused.

First claim

We claim:

1. A method for auto focusing a digital camera on a scene, the method comprising:
determining that a change in the scene requires that the digital camera be refocused;
automatically setting a focus distance of the digital camera to a lowest available distance;
dividing the scene into multiple sub-frames, incrementally increasing the focus distance at a first increment without user intervention and determining a focus value at each increment for each sub-frame and for…

Assignees

• Motorola Mobility Llc
• Google Technology Holdings LLC

Inventors

• Shchepetov Denis S
• Aas Eric F

Classifications

• H04N23/673 Primary

  Electricity · mapped topic

• H04N5/23212 Primary

  Electricity · mapped topic