US 2016/0366342 A1Published application

Method for tracking at least one object and method for replacing at least one object by a virtual object in a moving image signal recorded by a camera

AssigneeFraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

InventorWolfgang Vonolfen

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Abstract

The invention relates to a method for tracking at least one object in a moving image signal recorded by a camera. Firstly, in a calibration step, at least one feature of the object is thereby detected in the moving image recorded by the camera and the position of this feature for different states of the camera, for example different orientations, is stored in an assignment memory. In a tracking step, the position of the object can then be read out, by means of the camera state, from the assignment memory so that a more reliable tracking of the object becomes possible. According to the invention, a method is indicated in addition, in which the object tracked in this way is replaced by a virtual object in the moving image.

Claims17

Dependent claims

A method for tracking at least one object in a moving image signal recorded by a camera, the camera recording sections of a scene, in which sections the object is present at least at times and at least partially, and the camera producing the moving image signal as image of the recorded sections, values of at least one property of a camera state being determined with at least one sensor,

wherein in a calibration step, determining in the moving image signal positions of at least one feature of the object for a large number of the values of the at least one property of the camera state, and
storing these positions, assigned to those values of the property of the camera state for which these positions were determined in an assignment memory,
wherein in a tracking step, determining at least one value of the at least one property of the camera state using the at least one sensor, and that position which is stored assigned to this value is read out of the assignment memory as position of the at least one feature of the object.

Dependencies are inferred from the claim text.

Facts

Application: 15/176,860Filed 8 Jun 2016
Priority: EP 15 171 207.29 Jun 2015
Published: 15 Dec 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04N 23/69
Control of cameras or camera modules: control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming
G06T 7/20
Image analysis: analysis of motion
H04N 5/145
Movement detection: movement estimation
G06T 2207/30244
Subject of image; Context of image processing: camera pose

Family

US 10,110,822 B2Related patent
US 2016/0366342 A1This patent

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