Method and camera for determining an image adjustment parameter

Patent metadata

Field	Value
Publication number	US-10070053-B2
Application number	US-201715483579-A
Country	US
Kind code	B2
Filing date	Apr 10, 2017
Priority date	Jul 19, 2011
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

The present invention relates to a method and a camera for determining an image adjustment parameter. The method includes receiving a plurality of images representing an image view, detecting from the plurality of images events of a specific event type, identifying a location within the image view where the event of the specific type is present, determining a presence value of each of the identified locations, and determining an image adjustment parameter based on data from an adjustment location within the image view. The adjustment location is determined based on the presence value in each location of a plurality of locations within the image view.

First claim

What is claimed is:

1. A method for use in a camera, the method comprising:
receiving and processing sensor data in the form of a plurality of images representing an image view monitored by the camera;
detecting at least one event in the plurality of images, each of the at least one detected event being associated with at least one of presence of motion and presence of an object having a specific appearance in the plurality of images;
defining at least one specific location within the image view based on the at least one detected event;
determining a presence value for each of the at least one specific location, each presence value being updated to reflect a number of detected events at each of the at least one specific location; and
adjusting an image adjustment parameter of the camera based on one or more of the determined presence values.

2. The method of claim 1 , wherein the one or more presence value are represented in a frequency map.

3. The method of claim 1 , wherein the presence value indicates the number of times an event of a specific type has occurred at each specific location in the image view.

4. The method of claim 1 , wherein adjusting the image adjustment parameter of the camera includes adjusting any one or a combination of a camera setting or image processing setting of the camera.

5. The method of claim 1 , wherein the image adjustment parameter includes a camera setting.

6. The method of claim 1 , wherein the image adjustment parameter includes an image processing setting.

7. The method of claim 1 , wherein the image adjustment parameter of the camera is adjusted so that locations within the image view having the highest determined presence values are monitored with an increased image quality.

8. The method of claim 1 , further comprising adjusting the processing of sensor data using the image adjustment parameter.

9. The method of claim 8 , wherein a specific location within the image view having a low presence value is less relevant than a specific location within the image view having a high presence value.

10. A method for use in a camera, the method comprising:
receiving and processing sensor data in the form of a plurality of images representing an image view monitored by the camera;
detecting at least one event in the plurality of images, wherein each of the at least one detected event is associated with at least one of presence of motion and presence of an object having a specific appearance in the plurality of images;
defining, for each detected event, at least one specific location within the image view based on the at least one detected event;
determining a presence value for each of the at least one specific location, each presence value being based on at least one detected event and being updated as each of the plurality of images are received, wherein the presence value for each of the at least one specific location is updated to delete data associated with one or more previously detected events; and
adjusting an image adjustment parameter of the camera based on one or more of the determined presence values.

11. The method of claim 10 , wherein adjusting the image adjustment parameter of the camera includes adjusting any one or a combination of a camera setting or image processing setting of the camera.

12. The method of claim 10 , wherein the image adjustment parameter includes a camera setting.

13. The method of claim 10 , wherein the image adjustment parameter includes an image processing setting.

14. The method of claim 10 , wherein the image adjustment parameter of the camera is adjusted so that locations within the image view having the highest determined presence values are monitored with an increased image quality.

15. The method of claim 10 , further comprising adjusting the processing of sensor data using the image adjustment parameter.

16. The method of claim 15 , wherein a specific location within the image view having a low presence value is less relevant than a specific location within the image view having a high presence value.

17. A camera comprising:
an image sensor configured to receive sensor data in the form of a plurality of images representing an image view;
a memory; and
a processor configured to:
process the received sensor data;
detect at least one event in the plurality of images, each of the at least one detected event being associated with at least one of presence of motion and presence of an object having a specific appearance in the plurality of images;
define at least one specific location within the image view based on the at least one detected event;
determine a presence value for each of the at least one specific location, each presence value being updated to reflect a number of detected events at of the said at least one specific location; and
adjust an image adjustment parameter of the camera based on one or more of the determined presence values.

18. A camera comprising:
an image sensor configured to receive sensor data in the form of a plurality of images representing an image view;
a memory; and
a processor configured to:
process the received sensor data;
detect at least one event in the plurality of images, wherein each of the at least one detected event is associated with at least one of presence of motion and presence of an object having a specific appearance in the plurality of images;
define, for each detected event, at least one specific location within the image view based on the at least one detected event;
determine a presence value for each of the at least one specific location, each presence value being based on at least one detected event and being updated as each of the plurality of images are received, wherein the presence value for each of the at least one specific location is updated to delete data associated with one or more previously detected events; and
adjust an image adjustment parameter of the camera based on one or more of the determined presence values.

Assignees

• Axis Ab

Inventors

• Kannermark Per
• Nilsson Andreas
• Träff Gustav

Classifications

• H04N23/617 Primary

  Upgrading or updating of programs or applications for camera control · CPC title

• H04N23/611

  where the recognised objects include parts of the human body · CPC title

• H04N23/61 Primary

  based on recognised objects · CPC title

• G06K9/00771

  Physics · mapped topic

• H04N5/144

  Movement detection (for video coding H04N19/503; analysis of motion in general G06T7/20) · CPC title