Resolution detection device
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Method for calibrating the image of a camera
US8964035B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8964035-B2 |
| Application number | US-77305910-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 4, 2010 |
| Priority date | May 5, 2009 |
| Publication date | Feb 24, 2015 |
| Grant date | Feb 24, 2015 |
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Abstract
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A method for calibrating the image ( 3 I , 3 II ) of a camera ( 1 ), and, in particular, a traffic-monitoring camera, with respect to its viewing space, such that the camera projection parameters (m k1 ) of a camera projection of the viewing space onto the image are determined, includes the steps of providing a movable carrier ( 4 ) with at least four markings that can be viewed by the camera ( 1 ) and that span a volume and that form known first world points (w i ) in the viewing space, recording a first image ( 3 I ) of the viewing space, shifting the carrier ( 4 ) in the viewing space by an unknown offset (v) in order to obtain second world points (w i ) dependent on this offset in the viewing space, recording a second image ( 3 II ) of the viewing space, detecting the markings in the first image ( 3 I ) as first image points (p i ) and in the second image ( 3 II ) as second image points (p i ), and determining the camera projection parameters (m k1 ), while also determining the offset (v), from the known first world points, the second world points dependent on the offset, the detected first image points, and the detected second image points.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for calibrating an image of a stationary camera with respect to a viewing space of the camera, comprising: providing a movable carrier with at least four markings thereon that can be viewed by the stationary camera and that span a volume, the markings forming known first world points in the viewing space; recording a first image of the markings on the movable carrier in a first position in the viewing space; shifting the carrier with the at leas…
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- H04N17/002Primary
Electricity · mapped topic
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US8964035B2 cover?
- A method for calibrating the image ( 3 I , 3 II ) of a camera ( 1 ), and, in particular, a traffic-monitoring camera, with respect to its viewing space, such that the camera projection parameters (m k1 ) of a camera projection of the viewing space onto the image are determined, includes the steps of providing a movable carrier ( 4 ) with at least four markings that can be viewed by the ca…
- Who is the assignee on this patent?
- Kahler Peter, Janner Christian, Löhndorf Maike, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H04N17/002. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 24 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).