US 10,592,734 B2Granted

Method and device for the recording of body movements

AssigneeDental Innovation GmbH

InventorRolf Klett

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Abstract

The invention relates to a method for recording the position, location or movement of a body part of a patient and a device for recording the position, location or movement of a body part or a medical instrument. According to the invention, a graphic marker is connected with the body part or the instrument and an image of the body comprising the graphic marker is generated by an image recording camera (5, 6, 7). The image is processed by a processor device (14) as an image file. The invention is characterized in that at least one geometric size characteristic of the graphic marker is known, wherein the processor device (14) determines the position, location and/or movement of the graphic marker in the three-dimensional space and in a quantitative manner relative to the image recording camera (5, 6, 7) by means of the known size characteristic. The invention offers, without the need of manual calibration of the measuring system, a substantial automatization and a high measuring precision during the determination of position and movement in the three-dimensional space. Simultaneously, the expenditure on equipment can be reduced and the reaction to the object or body part to be measured or to the patient can be minimized.

Claims14

Dependent claims

A method for recording of position, location or movement of at least one body part of a patient arranged in an object space by means of electronic image recognition using at least one image recording camera, the method comprising the following process steps:

a) connecting at least one graphic marker carrier with the at least one body part, the at least one graphic marker carrier comprising a first marker area and a second marker area, the first marker area comprising a plurality of first graphic markers which are disposed in a first plane on a first surface of the at least one graphic marker carrier and the second graphic marker area comprising a plurality of second graphic markers which are disposed in a second plane on a second surface of the at least one graphic marker carrier, wherein the first plane and the second plane are arranged obliquely relative to one another;
b) generating an image of at least the area of the at least one body part containing the at least one graphic marker carrier by means of the at least one image recording camera;
c) transferring the image as an image file into an electronic processor device;
d) in the image space of the image file, localizing the first and/or second graphic markers contained in the image file by means of an application of an automated image recognition procedure to the image file;
e) determining of position and/or location of the first and/or second graphic markers in the object space relative to the at least one image recording camera by means of data generated in the automated image recognition procedure;
and
f) transferring the determined data regarding position and/or location of the first and/or second graphic markers in the object space into a data storage, wherein
during the automated image recognition procedure, a known distance between the first graphic markers and/or between the second graphic markers is considered, or wherein
each of the first graphic markers and each of the second graphic markers comprises or defines a circular region, or wherein
the first graphic markers are arranged in a first linear arrangement and the second graphic markers are arranged in a second linear arrangement.

7 more elements

A device for recording of position, location or movement of at least a component of the body of a patient or a medical instrument, the device comprising at least one graphic marker carrier connectable with the component and at least one image recording camera, wherein the at least one graphic marker carrier comprises a first marker area and a second marker area, the first marker area comprising a plurality of first graphic markers which are disposed in a first plane on a first surface of the at least one graphic marker carrier and the second graphic marker area comprising a plurality of second graphic markers which are disposed in a second plane on a second surface of the at least one graphic marker carrier, wherein the first plane and the second plane are arranged obliquely relative to one another, wherein the at least one image recording camera is equipped for generation of at least an image of the component comprising the at least one graphic marker carrier, the device further comprising a processor device for automated processing of image information contained in the image, wherein the processor device is equipped for determination of position, location and/or movement path of the first and/or second graphic markers relative to the image recording camera by means of data generated by the processor device, wherein

the processor device is configured to consider a known distance between the first graphic markers and/or between the second graphic markers during the automated processing of image information, or wherein
each of the first graphic markers and each of the second graphic markers comprises or defines a circular region, or wherein
the first graphic markers are arranged in a first linear arrangement and the second graphic markers are arranged in a second linear arrangement.

Dependencies are inferred from the claim text.

Facts

Application: 14/534,473Filed 6 Nov 2014 · continuation
Priority: DE 10 2006 003 94526 Jan 2006
Published: US 2015/0117720 A130 Apr 2015
Granted: 17 Mar 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

G06V 40/23
Movements or behaviour, e.g. gesture recognition: recognition of whole body movements, e.g. for sport training
A61B 5/1114
Local tracking of patients, e.g. in a hospital or private home: tracking parts of the body
A61B 5/1127
Using a particular sensing technique: using markers
A61B 5/1128
Using a particular sensing technique: using image analysis

Family

PCT/DE2007/000146Parent of this continuation · filed 23 Jan 2007
US 2015/0117720 A1Pre-grant publication · published 30 Apr 2015
Application12/162,221Parent of this continuation
US 8,908,023 B2Parent of this continuation
US 2009/0179986 A1Published application
US 10,592,734 B2This patent

From the US filing history. Foreign family members aren’t listed.