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

• US 8,334,898 B1
• Filed: 06/19/2012
• Issued: 12/18/2012
• Est. Priority Date: 07/26/2011
• Status: Active Grant

• Current Assignee: ABL IP Holding LLC (Acuity Brands, Inc.)
• Original Assignee: Bytelight, Inc. (Acuity Brands, Inc.)
• Inventors: Ryan, Daniel, Staats, Peter, Sumner, Rob
• Primary Examiner(s): WONG, ALLEN C
• Application Number:
  US13/526,656
• Time in Patent Office: 182 Days
• Field of Search: 348/14.08, 348/61, 455/556.1
• US Class Current: 348/61
• CPC Class Codes: G01C 21/206 specially adapted for indoor navigation
• CPC Class Codes: G01S 17/46 Indirect determination of position data
• CPC Class Codes: G01S 7/484 Transmitters
• CPC Class Codes: G06T 5/50 using two or more images, e.g. averaging or subtraction
• CPC Class Codes: G06T 5/70 Denoising; Smoothing
• CPC Class Codes: H04B 10/1149 Arrangements for indoor wireless networking of information
• CPC Class Codes: H04B 10/116 Visible light communication
• CPC Class Codes: H04N 1/387 Composing, repositioning or otherwise geometrically modifying originals
• CPC Class Codes: H04N 21/426 Internal components of the client ; Characteristics thereof H04N5/44 takes precedence
• CPC Class Codes: H04N 23/57 Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
• CPC Class Codes: H04N 23/71 Circuitry for evaluating the brightness variation
• CPC Class Codes: H04N 23/73 by influencing the exposure time
• CPC Class Codes: H04N 23/80 Camera processing pipelines; Components thereof
• CPC Class Codes: H04N 23/81 for suppressing or minimising disturbance in the image signal generation
• CPC Class Codes: H04N 25/531 by controlling rolling shutters in CMOS SSIS
• CPC Class Codes: H04N 25/60 Noise processing, e.g. detecting, correcting, reducing or removing noise
• CPC Class Codes: H04N 5/144 Movement detection for video coding H04N19/503; analysis of motion in general G06T7/20
• CPC Class Codes: H04N 5/455 Demodulation-circuits

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.

Claims

1. A method for configuring one or more imaging sensors of an imaging device to capture digital images for digital pulse recognition demodulation, the method comprising:

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, wherein the demodulation function calculates a frequency content of an image captured by the one or more imaging sensors based on a detected stripe width and the device profile comprises at least rolling shutter speed of the one or more imaging sensors of the imaging device.

2. The method of claim 1, wherein the adjusted setting is locked to prevent further adjustment of the adjusted setting.

3. The method of claim 1, wherein the device profile is calculated by the imaging device.

4. The method of claim 1, wherein the device profile is retrieved from a remote server.

5. The method of claim 1, wherein a frequency corresponding to each stripe width is adjusted based on the rolling shutter speed of the one more imaging sensors from the device profile.

6. The method of claim 1, wherein adjusting a setting for the imaging sensor comprises adjusting one of exposure, focus, saturation, white balance, zoom, contrast, brightness, gain, sharpness, ISO, resolution, image quality, scene selection, and metering mode.

7. The method of claim 1, wherein the defined region of interest comprises the brightest area of an image captured by a particular imaging sensor and automatically adjusting a setting for the particular imaging sensor comprises lowering the exposure time for the particular imaging sensor.

8. The method of claim 1, wherein the one or more imaging sensors of the imaging device comprises at least a front-facing imaging sensor and a rear-facing imaging sensor.

9. The method of claim 1, wherein initializing one or more imaging sensors of the imaging device comprises setting at least one of frame rate, data format, encoding scheme, and color space for one of the one or more imaging sensors.

10. The method of claim 1, wherein the determining a subset of the one or more imaging sensors to configure is based on at least one of desired level of power consumption, desired level of demodulation accuracy, amount of time since each sensor was last modified, environmental conditions, and the battery state of the imaging device.

11. The method of claim 1, wherein the subset of the one or more imaging sensors to configure is fewer than all of the one or more imaging sensors of the imaging device.

12. The method of claim 1, wherein the subset of the one or more imaging sensors to configure is all of the one or more imaging sensors of the imaging device.

13. An image detection apparatus for capturing digital images for digital pulse recognition demodulation comprising:

one or more imaging sensors; and

a processor in communication with the one or more imaging sensors configured to initialize one or more imaging sensors, determine a subset of the one or more imaging sensors to configure, set a configuration for each of the one or more imaging sensors of the subset by defining a region of interest as a metering area 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 adjust input parameters of a demodulation function based on a device profile of the image detection apparatus, wherein the processor is configured to calculate frequencies using the demodulation function based on a detected stripe width in images captured by the one or more imaging sensors and the device profile comprises at least rolling shutter speed of the one or more imaging sensors of the image detection apparatus.

14. The image detection apparatus of claim 13, wherein the processor is configured to lock the adjusted setting to prevent further adjustment of the adjusted setting.

15. The image detection apparatus of claim 13, wherein the processor is configured to calculate the device profile.

16. The image detection apparatus of claim 13, wherein the processor is configured to retrieve the device profile from a remote server.

17. The image detection apparatus of claim 13, wherein a frequency corresponding to each stripe width is adjusted based on the rolling shutter speed of the one more imaging sensors from the device profile.

18. The image detection apparatus of claim 13, wherein adjusting a setting for the imaging sensor comprises adjusting one of exposure, focus, saturation, white balance, zoom, contrast, brightness, gain, sharpness, ISO, resolution, image quality, scene selection, and metering mode.

19. The image detection apparatus of claim 13, wherein the defined region of interest comprises the brightest area of an image captured by a particular imaging sensor and automatically adjusting a setting for the particular imaging sensor comprises lowering the exposure time for the particular imaging sensor.

20. The image detection apparatus of claim 13, wherein the one or more imaging sensors comprises at least a front-facing imaging sensor and a rear-facing imaging sensor.

21. The image detection apparatus of claim 13, wherein the processor is configured to initialize one or more imaging sensors by setting at least one of frame rate, data format, encoding scheme, and color space for one of the one or more imaging sensors.

22. The image detection apparatus of claim 13, wherein the processor is configured to determine a subset of the one or more imaging sensors to configure based on at least one of desired level of power consumption, desired level of demodulation accuracy, amount of time since each sensor was last modified, environmental conditions, and the battery state of the image detection apparatus.

23. The image detection apparatus of claim 13, wherein the subset of the one or more imaging sensors to configure is fewer than all of the one or more imaging sensors of the image detection apparatus.

24. The image detection apparatus of claim 13, wherein the subset of the one or more imaging sensors to configure is all of the one or more imaging sensors of the image detection apparatus.