Image blur detection

Patent metadata

Field	Value
Publication number	US-8964045-B2
Application number	US-201213362849-A
Country	US
Kind code	B2
Filing date	Jan 31, 2012
Priority date	Jan 31, 2012
Publication date	Feb 24, 2015
Grant date	Feb 24, 2015

Abstract

Among other things, one or more techniques and/or systems are provided for quantifying blur of an image. Blur may result due to motion of a camera while the image is captured. Accordingly, motion measurement data corresponding to motion of the camera during an exposure event may be used to create a camera rotation matrix. A camera intrinsic matrix may be obtained based upon a focal length and principle point of the camera. A transformation matrix may be estimated based upon the camera rotation matrix and/or the camera intrinsic matrix. The transformation matrix may be applied to pixels within the image to determine a blur metric for the image. In this way, blur of an image may be quantified offline and/or in real-time during operation of the camera (e.g., so that the image may be re-acquired (e.g., on the fly) if the image is regarded as being overly blurry).

First claim

What is claimed is:

1. A method for determining a blur metric for an image, comprising:
receiving motion measurement data associated with a camera;
creating a camera rotation matrix defining an angular difference of the camera between a shutter open event and a shutter close event when generating an image based upon the motion measurement data;
obtaining a camera intrinsic matrix comprising conversion information between image plane coordinates and object coordinates based upo…

Assignees

• Shah Chintan Anil
• Schickler Wolfgang M
• Lepikhin Maksim
• Goff Jr Corey Benjamin
• Microsoft Corp

Inventors

• Shah Chintan Anil
• Schickler Wolfgang M
• Lepikhin Maksim
• Goff Jr Corey Benjamin

Classifications

• H04N23/6811 Primary

  Electricity · mapped topic