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

Patent metadata

Field	Value
Publication number	US-9723219-B2
Application number	US-201514957146-A
Country	US
Kind code	B2
Filing date	Dec 2, 2015
Priority date	Jul 26, 2011
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

In one aspect, the present disclosure relates 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

What is claimed is:

1. A mobile device, comprising:
a rolling shutter camera;
a processor coupled to the rolling shutter camera;
a memory; and
software in the memory to be run by the processor, wherein running of the software by the processor configures the mobile device to implement functions, including functions to:
set an image capture configuration for the rolling shutter camera, wherein the image capture configuration of the rolling shutter camera optimizes image capture for digital pulse recognition demodulation;
adjust parameters of a demodulation function, wherein the demodulation function calculates image frequency content based on detected stripe width;
capture an image using the rolling shutter camera according to the image capture configuration; and
process the captured image using the adjusted demodulation function to obtain information from light based communication.

2. The mobile device of claim 1 , wherein the implemented functions further include a function to lock the image capture configuration to prevent further adjustment of the adjusted setting.

3. The mobile device of claim 1 , wherein the function to set the image capture configuration comprises a function to retrieve the image capture configuration from a remote server.

4. The mobile device of claim 1 , wherein the function to set the image capture configuration comprises a function to set a rolling shutter speed of the rolling shutter camera.

5. The mobile device of claim 1 , wherein the function to set the image capture configuration comprises a function to set a frame rate, a data format, an encoding scheme, or a color space for the rolling shutter camera.

6. The mobile device of claim 1 , wherein the function to adjust the parameters of the demodulation function comprises a function to adjust the parameters based on the image capture configuration of the rolling shutter camera.

7. The mobile device of claim 1 , wherein the function to process the captured image using the adjusted demodulation function includes adjusting, based on a rolling shutter speed of the rolling shutter camera from the image capture configuration, a plurality of frequencies, each one frequency corresponding to one stripe width of a plurality of stripe widths.

8. A mobile device, comprising:
a rolling shutter camera;
a processor coupled to the rolling shutter camera;
a memory; and
software in the memory to be run by the processor, wherein running of the software by the processor configures the mobile device to implement functions, including functions to:
initialize the rolling shutter camera;
set a configuration of the rolling shutter camera by:
defining a region of interest as a metering area for the rolling shutter camera; and
adjusting a setting for the rolling shutter camera;
adjust, based on a device profile of the mobile device, input parameters of a demodulation function, wherein the demodulation function calculates image frequency content based on detected stripe width;
capture an image using the rolling shutter camera; and
process the captured image using the adjusted demodulation function to obtain information from light based communication.

9. The mobile device of claim 8 , wherein the function to set the configuration includes functions to:
define the region of interest as a brightest area of an image captured by the rolling shutter camera; and
adjust the setting by lowering the exposure time for the rolling shutter camera.

10. The mobile device of claim 8 , wherein the function to set the configuration includes a function to adjust one of exposure, focus, saturation, white balance, zoom, contrast, brightness, gain, sharpness, ISO, resolution, image quality, scene selection, and metering mode.

11. The mobile device of claim 8 , wherein the function to initialize the rolling shutter camera comprises setting, for the rolling shutter camera, at least one of frame rate, data format, encoding scheme, and color space.

12. The mobile device of claim 8 , wherein the function to adjust input parameters includes a function to acquire the device profile from a remote server.

13. The mobile device of claim 8 , wherein the function to process the captured image using the adjusted demodulation function includes adjusting, based on a rolling shutter speed of the rolling shutter camera from the device profile, a plurality of frequencies, each one frequency corresponding to one stripe width of a plurality of stripe widths.

14. A mobile device, comprising:
a rolling shutter camera; and
a module coupled to the rolling shutter camera, the module configured to:
override automatic parameter adjustments of the rolling shutter camera to set a capture configuration for the rolling shutter camera, 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;
capture an image using the rolling shutter camera 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 mobile device of claim 14 , wherein the module is further configured to:
adjust, based on characteristics of the rolling shutter camera, parameters of a demodulation function of the mobile device.

16. The mobile device of claim 15 , wherein the module is configured to adjust parameters of the demodulation function 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.

17. The mobile device of claim 14 , wherein the module is configured to override automatic parameter adjustments by adjusting at least one overridden automatic parameter adjustment related to exposure.

18. The mobile device of claim 14 , wherein the module is configured to override automatic parameter adjustments by adjusting at least one overridden automatic parameter adjustment related to focus.

19. The mobile device of claim 14 , wherein the module is configured to override automatic parameter adjustments by adjusting at least one overridden automatic parameter adjustment related to one of saturation, white balance, zoom, contrast, brightness, gain, sharpness, ISO, resolution, image quality, scene selection, or metering mode.

20. The mobile device of claim 14 , wherein the module is configured to set the capture configuration by setting a rolling shutter speed of the rolling shutter camera.

21. The mobile device of claim 14 , further comprising:
a processor; and
a memory coupled to the processor,
wherein the module is a program in the memory for execution by the processor.

Assignees

• Abl Ip Holding Llc

Inventors

• Ryan Daniel
• Staats Peter
• Sumner Jr Robert

Classifications

• H04B10/1149

  Arrangements for indoor wireless networking of information · CPC title

• H04B10/116

  Visible light communication · CPC title

• H04N23/80

  Camera processing pipelines; Components thereof · CPC title

• H04N23/71

  Circuitry for evaluating the brightness variation · CPC title

• G01C21/206 Primary

  specially adapted for indoor navigation · CPC title