Invention Application
US20120019667A1 METHOD AND DEVICE FOR ADAPTIVE NOISE MEASUREMENT OF A VIDEO SIGNAL
有权
用于视频信号的自适应噪声测量的方法和装置
- Patent Title: METHOD AND DEVICE FOR ADAPTIVE NOISE MEASUREMENT OF A VIDEO SIGNAL
- Patent Title (中): 用于视频信号的自适应噪声测量的方法和装置
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Application No.: US13190807Application Date: 2011-07-26
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Publication No.: US20120019667A1Publication Date: 2012-01-26
- Inventor: Frank MOESLE , Paul Springer , Gregor Schewior
- Applicant: Frank MOESLE , Paul Springer , Gregor Schewior
- Applicant Address: JP Tokyo
- Assignee: SONY CORPORATION
- Current Assignee: SONY CORPORATION
- Current Assignee Address: JP Tokyo
- Priority: EP10170745.3 20100726
- Main IPC: H04N17/00
- IPC: H04N17/00

Abstract:
The present invention relates to method of adaptive noise measurement of a video signal comprising a sequence of images. The proposed method comprises the steps of searching one or more spatially uniform areas within a current image, determining a spatial uniformity value of said one or more spatially uniform areas and combining said spatial uniformity values to obtain a spatial noise value representing a first measure for the amount of noise in said current image, detecting motion by comparing the current image with one or more preceding images and/or one or more succeeding images of said sequence of images by use of a motion threshold to obtain one or more motion maps indicating the amount of motion between the current image and the respective preceding or succeeding image, searching one or more static areas within said one or more motion maps, determining a temporal uniformity value for said one or more static areas by comparing image values at positions in said one or more preceding images and/or said one or more succeeding images, at which a low amount or no motion is indicated in the respective one or more motion maps, said temporal uniformity value representing a measure for the amount of noise at said positions in said current image, and combining said obtained temporal uniformity values to obtain a combined noise value representing a second measure for the amount of noise in said current image.
Public/Granted literature
- US09444977B2 Method and device for adaptive noise measurement of a video signal Public/Granted day:2016-09-13
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