Video compression stream

US11610461B2 · kind B2 · utility

Assignee

• Axis AB · SE

Inventors

• Stefan Lundberg · Lund, SE
• Song Yuan · Lund, SE
• Tim Borglund · Lund, SE

Key dates

• Filing date: Apr 28, 2021
• Grant date: Mar 21, 2023
• Expiry date: Nov 4, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2207/10016
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

The present disclosure relates to a method performed by a background blurring system (1) for provision of a video compression stream from a video camera (2) adapted for capturing a scene. The background blurring system identifies (1001) in a first image of the scene, at a first point in time, at least a first pixel comprised in a background of the first image. The background blurring system further determines (1002) a blurred pixel value for the at least first pixel. Moreover, the background blurring system provides (1003), subsequent the first point in time, the blurred pixel value in the video compression stream. The background blurring system furthermore identifies (1004) in a second image of the scene, at a subsequent second point in time, that the at least first pixel has altered to be comprised in a foreground of the second image. Moreover, the background blurring system provides (1005) in the video compression stream, subsequent the second point in time—continuously and/or intermittently—identified non-blurred pixel values for the at least first pixel. The background blurring system further identifies (1006) in a third image of the scene, at a subsequent third point in time,…