Method and system for configuring an imaging device for the reception of digital pulse recognition information

Patent metadata

Field	Value
Publication number	US-9398190-B2
Application number	US-201213718233-A
Country	US
Kind code	B2
Filing date	Dec 18, 2012
Priority date	Jul 26, 2011
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

In one aspect, the present disclosure related to a method for configuring one or more imaging sensors of an imaging device to capture digital images for digital pulse recognition demodulation. In some embodiments, the method includes initializing one or more imaging sensors of the imaging device, determining a subset of the one or more imaging sensors to configure, setting a configuration for each of the one or more imaging sensors of the subset by defining a region of interest as a metering area for each of the one or more imaging sensors of the subset and automatically adjusting a setting for each of the one or more imaging sensors of the subset, and adjusting input parameters of a demodulation function based on a device profile of the imaging device. In some embodiments, the adjusted setting is locked to prevent further adjustment of the adjusted setting.

First claim

We claim:

1. A method comprising:
setting a capture configuration for an image sensor to capture an image, wherein the capture configuration of the image sensor optimizes a captured image for digital pulse recognition demodulation;
adjusting parameters of a demodulation function, wherein the demodulation function calculates a frequency content of the image based on a detected stripe width;
capturing an image using the image sensor according to the capture configuration; and
processing the captured image using the adjusted demodulation function to obtain information from light based communication.

2. The method of claim 1 , comprising locking the capture configuration to prevent further adjustment of the adjusted setting.

3. The method of claim 1 , comprising retrieving the capture configuration from a remote server.

4. The method of claim 1 , wherein the capture configuration comprises a rolling shutter speed of the image sensor.

5. The method of claim 1 , wherein the capture configuration comprises a frame rate, a data format, an encoding scheme, or a color space for the image sensor.

6. The method of claim 1 , wherein the parameters of the demodulation function are adjusted based on the capture configuration of the image sensor.

7. The method of claim 1 , wherein a frequency corresponding to each stripe width is adjusted based on a rolling shutter speed of the image sensor from the capture configuration.

8. A method comprising:
adjusting, by a processor of a mobile device, parameters of a demodulation function, wherein the demodulation function calculates a frequency content of an image based on a detected stripe width;
capturing an image using an image sensor of the mobile device; and
processing, by the processor of the mobile device, the captured image using the adjusted demodulation function to obtain information from light based communication.

9. The method of claim 8 , comprising locking the capture configuration to prevent further adjustment of the adjusted setting.

10. The method of claim 8 , comprising retrieving the capture configuration from a remote server.

11. The method of claim 8 , wherein the capture configuration comprises a rolling shutter speed of the image sensor.

12. The method of claim 8 , wherein the capture configuration comprises a frame rate, a data format, an encoding scheme, or a color space for the image sensor.

13. The method of claim 8 , wherein a frequency corresponding to each stripe width is adjusted based on the rolling shutter speed of the image sensor from the capture configuration.

14. A method comprising:
overriding automatic parameter adjustments of an image sensor of a mobile device to set a capture configuration for the image sensor, the automatic parameter adjustments being made by a mobile operating system of the mobile device and the capture configuration being optimized to capture one or more images of visible light modulated with data;
adjusting, based on characteristics of the image sensor, parameters of a demodulation function of the mobile device to optimize the demodulation function for detection of one or more stripes, the one or more stripes resulting from image processing of modulated visible light;
capturing an image using the image sensor according to the capture configuration, the image including visible light modulated with data; and
processing the captured image to demodulate the data from the visible light.

15. The method of claim 14 , wherein at least one overridden automatic parameter adjustment is related to exposure.

16. The method of claim 14 , wherein at least one overridden automatic parameter adjustment is related to focus.

17. The method of claim 14 , wherein at least one overridden automatic parameter adjustment is related to one of saturation, white balance, zoom, contrast, brightness, gain, sharpness, ISO, resolution, image quality, scene selection, or metering mode.

18. The method of claim 14 , wherein the capture configuration comprises a rolling shutter speed of the image sensor.

Assignees

• Abl Ip Holding Llc

Inventors

• Ryan Daniel
• Staats Peter
• Sumner Rob

Classifications

• H04B10/1149

  Arrangements for indoor wireless networking of information · CPC title

• H04B10/116

  Visible light communication · CPC title

• G01C21/206 Primary

  specially adapted for indoor navigation · CPC title

• H04N25/531

  by controlling rolling shutters in CMOS SSIS · CPC title

• H04N23/80

  Camera processing pipelines; Components thereof · CPC title