Method and apparatus to obtain differential location information

Patent metadata

Field	Value
Publication number	US-9897450-B2
Application number	US-201514717986-A
Country	US
Kind code	B2
Filing date	May 20, 2015
Priority date	May 20, 2015
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

In accordance with an example embodiment of the invention there is at least a method and apparatus to perform operations including determining, by a media recording device, a differential location sample identifying a current location in time associated with the media recording device relative to a reference location; and at least one of storing and transmitting, by the media recording device, the differential location sample in an audio-visual media file. In accordance with another example embodiment of the invention there is at least a method and apparatus to perform operations including receiving and parsing, by a parser device, a plurality of differential location samples of an audio-visual media file to identify an absolute location of a media recording device.

First claim

What is claimed is:

1. A method, comprising:
determining, by a media recording device, a differential location sample identifying a current location in time associated with the media recording device relative to a reference location;
identifying initial velocity and acceleration data of the media recording device towards an indicated direction, wherein the initial velocity and acceleration data comprises x, y, and z axis values based on a pre-selected axis convention;
storing in an audio-visual media file the differential location sample expressed in terms of the identified initial velocity and acceleration data of the media recording device towards the indicated direction, wherein the initial velocity and acceleration data are determined from sensing using at least one of an accelerometer and an altitude sensor of the media recording device; and
transmitting, by the media recording device, the differential location sample in the audio-visual media file.

2. The method according to claim 1 , wherein the audio-visual media file comprises a data sample definition referencing mechanism to indicate the differential location sample data storage format which has associated sampling time information to store the differential location sample data in the audio-visual media file.

3. The method according to claim 1 , wherein the reference location in time is obtained from a time-aligned sample of a geographical location track associated with the media recording device, wherein the geographical location track is based on actual geographical coordinate data or virtual reality geographical coordinate data determined by the media recording device.

4. The method according to claim 1 , comprising identifying and storing an orientation associated with the media recording device with the differential location sample in the audio-visual media file, wherein the orientation associated with the media recording device comprises camera view orientation data of the media recording device.

5. The method according to claim 1 performed by a non-transitory computer readable medium including computer program code, and the computer program code executed by at least one processor.

6. An apparatus comprising:
at least one processor; and
at least one memory including computer program code, where the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus to at least:
determine, with a media recording device, a differential location sample identifying a current location in time associated with the media recording device relative to a reference, location;
identify initial velocity and acceleration data of the media recording device towards an indicated direction, wherein the initial velocity and acceleration data comprises x, y, and z axis values based on a pre-selected axis convention;
storing in an audio-visual media file the differential location sample expressed in terms of the identified initial velocity and acceleration data of the media recording device towards the indicated direction, wherein the initial velocity and acceleration data are determined from sensing using at least one of an accelerometer and an altitude sensor of the media recording device; and
transmit, with the media recording device, the differential location sample in the audio-visual media file.

7. The apparatus according to claim 6 , wherein the audio-visual media file comprises a data sample definition referencing mechanism to indicate the differential location sample data storage format which has associated sampling time information to store the differential location sample data in the audio-visual media file.

8. The apparatus according to claim 6 , wherein the reference location in time is obtained from a time-aligned sample of a geographical location track associated with the media recording device, wherein the geographical location track is based on actual geographical coordinate data or virtual reality geographical coordinate data determined by the media recording device.

9. The apparatus according to claim 6 , wherein the at least one memory including the computer program code is configured with the at least one processor to cause the apparatus to:
identify and storing an orientation associated with the media recording device with the differential location sample in the audio-visual media file, wherein the orientation associated with the media recording device comprises camera view orientation data of the media recording device.

10. A method, comprising:
receiving, by a parser device, a plurality of differential location samples of an audio-visual media file, wherein each differential location sample identifies a location associated in time with a media recording device relative to a reference location and an initial velocity and acceleration data of the media recording device toward an indicated direction, wherein the initial velocity and acceleration data comprises x, y, and z axis values based on a pre-selected axis convention determined from at least one of an accelerometer and an altitude sensor of the media recording device; and
parsing the plurality of differential location samples to determine an absolute location of the media recording device, comprising:
determining that a current differential location sample comprises coordinate data;
identifying an initial location associated with the coordinate data;
determining that the current differential location sample comprises initial velocity and acceleration data, wherein the initial velocity data is using a pre-selected axis convention;
identifying sensor characteristics information related to measurement sensitivities for determining the absolute location; and
based on at least the initial location, the initial velocity, the acceleration data, and the sensor characteristics information determining the absolute location of the media recording device.

11. An apparatus, comprising:
at least one processor; and
at least one memory including computer program code, where the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus to at least:
receive, with a parser device, a plurality of differential location samples of an audio-visual media file, wherein each differential location sample identifies a location associated in time with a media recording device relative to a reference location and an initial velocity and acceleration data of the media recording device toward an indicated direction, wherein the initial velocity and acceleration data comprises x, y, and z axis values based on a pre-selected axis convention determined from at least one of an accelerometer and an altitude sensor of the media recording device; and
parse, with the parser device, the plurality of differential location samples to determine an absolute location of the media recording device, comprising:
determining that a current differential location sample comprises coordinate data;
identifying an initial location associated with the coordinate data;
determining that the current differential location sample comprises initial velocity and acceleration data, wherein the initial velocity data is using a pre-selected axis convention;
identifying sensor characteristics information related to measurement sensitivities for determining the absolute location; and
based on at least the initial location, the initial velocity, the acceleration data, and the sensor characteristics information determining the absolute location of the media recording device.

12. The method according to claim 10 , wherein the audio-visual media file comprises a data sample definition r

Assignees

• Nokia Technologies Oy

Inventors

• Aksu Emre Baris
• Hannuksela Miska Matias

Classifications

• H04N21/44218

  Detecting physical presence or behaviour of the user, e.g. using sensors to detect if the user is leaving the room or changes his face expression during a TV programme (methods or arrangements for recognising human body or animal bodies or body parts G06V40/10; methods or arrangements for acquiring or recognising human faces, facial parts, facial sketches, facial expressions G06V40/16; methods or arrangements for recognising movements or behaviour G06V40/20; arrangements for identifying users in broadcast systems H04H60/45) · CPC title

• H04N9/8205

  involving the multiplexing of an additional signal and the colour video signal · CPC title

• G01S19/14

  specially adapted for specific applications · CPC title

• H04N5/765

  Interface circuits between an apparatus for recording and another apparatus · CPC title

• G01C21/1656 Primary

  with passive imaging devices, e.g. cameras · CPC title