Method and system for generating real-time motion video

Patent metadata

Field	Value
Publication number	US-9319668-B2
Application number	US-201314092136-A
Country	US
Kind code	B2
Filing date	Nov 27, 2013
Priority date	Nov 29, 2012
Publication date	Apr 19, 2016
Grant date	Apr 19, 2016

Abstract

The present invention relates to a method for generating real-time motion video. The method comprises receiving, at a video processing device, calibration data from a memory in an image sensor unit, the calibration data relating to properties of the image sensor unit. The video processing device receiving real-time raw image data from the image sensor unit via a communication cable and a communication protocol. The video processing device processing the real-time raw image data received from the image sensor unit, where the processing includes adjusting received image data based on at least part of the received calibration data and encoding the image data to a predetermined video format, and outputting the processed image data in real time.

First claim

What is claimed is:

1. A method for generating real-time motion video, the method comprising:
receiving, at a control interface of a video processing device, calibration data and authentication data from a memory in an image sensor unit, the calibration data relating to properties of the image sensor unit, wherein the video processing device and the image sensor unit are separate, non-integrated devices,
receiving, at a media interface of the video processing device, real-time raw image data from the image sensor of the image sensor unit via a communication cable and a communication protocol, said real-time raw image data is digitized pixels from the image sensor and wherein none of the digitized pixels has been changed based on data in a neighbouring pixel,
processing, in a media processing device of the video processing device, the real-time raw image data received from the image sensor of the image sensor unit in view of the calibration data and authentication data received at a control processing device from the control interface, wherein the processing includes applying a de-mosaicing algorithm to received image data, adjusting received image data based on at least part of the received calibration data and encoding the image data to a predetermined video format, and
outputting the processed image data in real time.

2. The method according to claim 1 , wherein the processing further comprises converting the image data to a predetermined colour space.

3. The method according to claim 1 , wherein the encoding of image data includes compressing the image data using lossy compression.

4. The method according to claim 1 , further comprising:
retrieving from a memory in the image sensor unit the calibration data; and,
sending the calibration data from the image sensor unit to the video processing device.

5. The method according to claim 1 , wherein the calibration data includes colour correction data.

6. The method according to claim 1 , wherein the calibration data includes image noise reduction data.

7. The method according to claim 1 , wherein the calibration data relates to characteristics of the image sensor.

8. The method according to claim 1 , wherein said real time raw image data received at the video processing device is digital data.

9. The method according claim 1 , further comprising:
receiving, at the control interface of the video processing device, calibration data from a second image sensor unit, the calibration data from the second image sensor unit relates to properties of the second image sensor unit,
receiving, at the media interface of the video processing device, real-time raw image data from the second image sensor unit via a communication cable and a communication protocol,
processing, in the media processing device of the video processing device, the real-time raw image data received from the second image sensor unit, wherein the processing includes adjusting received image data based on at least part of the calibration data received from the second image sensor unit and encoding the image data to a predetermined video format, and
outputting the processed image data originating from the second image sensor unit in real time.

10. The method according to claim 1 , wherein said calibration data is sent once at initiation of the image sensor unit.

11. The method according to claim 1 , wherein said calibration data is sent upon request from the processing device.

12. The method according to claim 1 , further comprising:
exchanging power requirement information between the video processing device and the image sensor unit to fully power up the image sensor unit.

13. The method according to claim 12 , wherein the video processing device notifies a user that capacity is unavailable to power the image sensor unit.

14. The method according to claim 1 , wherein the calibration data includes image sensor unit position and task information with respect to the image sensor unit.

15. The method according to claim 14 , further comprising:
installing the image sensor unit based on the image sensor unit position and task information.

16. The method of claim 1 , further comprising:
receiving, at a control interface of the image sensor unit, timing information for the image sensor, read out mode, interface control, power optimization and pan, tilt, zoom parameters;
receiving, at a power interface of the image sensor unit, power from the video processing unit via a power line;
capturing, at the image sensor, the real-time raw image data using the timing information for the image sensor, the read out mode, the interface control, the power optimization and the pan, tilt, zoom parameters received by the image sensor controller from the control interface of the image sensor unit;
measuring, with an accelerometer, acceleration data;
digitizing, at the analog-to-digital converter, the real-time raw image data;
transmitting, via a media interface of the image sensor unit, the real-time raw image data to the media interface of the video processing device; and
transmitting, via the control interface of the image sensor unit, control information, control instructions, calibration data, acceleration data and authentication data to the control interface of the video processing device.

17. A device for generating real-time motion video, comprising:
a control interface of a video processing device configured to receive control information, calibration data and authentication data from a memory in an image sensor unit, the calibration data relating to properties of the image sensor unit, wherein the video processing device and the image sensor unit are separate, non-integrated devices;
a media interface of the video processing device configured to receive real-time raw image data from the image sensor the image sensor unit via a communication cable and a communication protocol;
the media processing device of the video processing device configured to process the real-time raw image data received from the image sensor unit in association with the control information, calibration data and authentication data received at a control processing device from the control interface, wherein the processing includes applying a de-mosaicing algorithm to received image data, adjusting received image data based on at least part of the received calibration data and encoding the image data to a predetermined video format, wherein the image sensor unit lacks a media processing device for processing the real-time raw image data; and
the video processing device configured to output the processed image data in real time.

18. The device according to claim 17 , wherein the processing further comprises converting the image data to a predetermined colour space.

19. The device according to claim 17 , wherein the encoding of image data includes compressing the image data using lossy compression.

20. The device according to claim 17 , wherein the calibration data includes colour correction data.

21. The device according to claim 17 , wherein the calibration data includes image noise reduction data.

22. The device according to claim 17 , wherein the calibration data relates to characteristics of the image sensor.

23. The device according to claim 17 , wherein the real time raw image data is digital data.

24. The method according to claim 15 , wherein the image sensor unit includes maintenance information.

25. The device according to

Assignees

• Axis Ab

Inventors

• Kannermark Per
• Lundberg Stefan

Classifications

• H04N23/661

  Transmitting camera control signals through networks, e.g. control via the Internet · CPC title

• H04N23/843

  Demosaicing, e.g. interpolating colour pixel values · CPC title

• H04N17/02

  for colour television signals · CPC title

• H04N17/002 Primary

  for television cameras · CPC title

• H04N5/23206

  Electricity · mapped topic