Lighting for an imaging device

Patent metadata

Field	Value
Publication number	US-2025024160-A1
Application number	US-202418902576-A
Country	US
Kind code	A1
Filing date	Sep 30, 2024
Priority date	Jun 29, 2021
Publication date	Jan 16, 2025
Grant date	—

Abstract

A processor captures a first image of a platform using a first camera of a plurality of cameras and determines a color metric based on the first image, wherein the color metric indicates a color of the first image. The processor compares the color metric to the color metric. In response to determining that the color metric associated with the first image does not match with the color setpoint, the processor adjusts brightness of at least one of a first set of warm LEDs or a second set of cool LEDs to cause the color of the light incident on the platform to match the color setpoint.

First claim

1 . An apparatus comprising:
a plurality of cameras, wherein each camera is configured to capture images of at least a portion of a platform; and an array of Light Emitting Diodes (LEDs) configured to illuminate the platform, wherein the array of LEDs comprises:
a first set of the LEDs configured to emit warm light; and
a second set of LEDs configured to emit cool light;
a memory configured to store a pre-configured color setpoint; a processor communicatively coupled to the plurality of cameras and the array of LEDs, the processor configured to:
capture a first image of the platform using a first camera of the plurality of cameras;
determine a color metric based on the first image, wherein the color metric indicates a color of the first image;
compare the color metric to the color setpoint; and
in response to determining that the color metric associated with the first image does not match with the color setpoint, adjust brightness of at least one of the first set of LEDs or the second set of LEDs to cause the color of light incident on the platform to match the color setpoint.

2 . The apparatus of claim 1 , wherein the LEDs from the first set of LEDs and the second set of LEDs are arranged in an alternating pattern.

3 . The apparatus of claim 1 , wherein:
the LEDs from the first set of LEDs are configured to emit the warm light at a color temperature of 2700 Kelvin; and the LEDs from the second set of LEDs are configured to emit the cool light at a color temperature of 6000 Kelvin.

4 . The apparatus of claim 1 , wherein the color metric determined based on the first image comprises a mean hue intensity of the first image.

5 . The apparatus of claim 1 , wherein the processor is configured to adjust the brightness of at least one of the first set of LEDs or the second set of LEDs by:
in response to determining that the color metric associated with the first image is higher than the color setpoint, increasing the brightness of the first set of LEDs that emit warm light to cause the color of the light incident on the platform to match the color setpoint.

6 . The apparatus of claim 1 , wherein the processor is configured to adjust the brightness of at least one of the first set of LEDs or the second set of LEDs by:
in response to determining that the color metric associated the first image is higher than the color setpoint, cause the color of the light incident on the platform to match the color setpoint and maintain brightness of the light incident on the platform by:
increasing the brightness of the first set of LEDs that emit warm light by a first amount; and
decreasing the brightness of the second set of LEDs that emit cool light by the same first amount.

7 . The apparatus of claim 1 , wherein the processor is configured to adjust the brightness of at least one of the first set of LEDs or the second set of LEDs by:
in response to determining that the color metric associated the first image is lower than the color setpoint, increasing the brightness of the second set of LEDs that emit cool light to cause the color of the light incident on the platform to match the color setpoint.

8 . The apparatus of claim 1 , wherein the processor is configured to adjust the brightness of at least one of the first set of LEDs or the second set of LEDs by:
in response to determining that the color metric associated the first image is lower than the color setpoint, cause the color of the light incident on the platform to match the color setpoint and maintain brightness of the light incident on the platform by:
increasing the brightness of the second set of LEDs that emit cool light by a first amount; and
decreasing the brightness of the first set of LEDs that emit warm light by the same first amount.

9 . The apparatus of claim 1 , wherein the processor is further configured to perform the capturing, determining, comparing, and adjusting according to a pre-configured schedule.

10 . The apparatus of claim 1 , wherein the processor is further configured to:
determine an overall brightness of the light incident on the platform, based on the first image of the platform; compare the overall brightness to a pre-configured brightness; in response to determining that the overall brightness does not match the pre-configured brightness, adjust the brightness of light emitted by the first set of LEDs and the second set of LEDs in conjunction with each other to cause the overall brightness of the light incident on the platform to match the pre-configured brightness.

11 . The apparatus of claim 10 , the processor is further configured to adjust the brightness of light emitted by the first set of LEDs and the second set of LEDs by:
in response to determining that the overall brightness is less than the pre-configured brightness, increase the brightness of the first set of LEDs and the second set of LEDs by a same amount to match the pre-configured brightness; and in response to determining that the overall brightness is higher than the pre-configured brightness, decrease the brightness of the first set of LEDs and the second set of LEDs by a same amount to match the pre-configured brightness.

12 . The apparatus of claim 1 , wherein the first camera is an overhead camera that is configured to capture overhead images of the platform.

13 . The apparatus of claim 1 , wherein the array of LEDs only comprises the first set of LEDs and the second set of LEDs.

14 . A method comprising:
capturing a first image of a platform using a first camera of a plurality of cameras of an apparatus, wherein:
each camera is configured to capture images of at least a portion of a platform; and
an array of Light Emitting Diodes (LEDs) is configured to illuminate the platform, wherein the array of LEDs comprises:
a first set of the LEDs configured to emit warm light; and
a second set of LEDs configured to emit cool light;

determining a color metric based on the first image, wherein the color metric indicates a color of the first image;
comparing the color metric to a color setpoint; and
in response to determining that the color metric associated with the first image does not match with the color setpoint, adjusting brightness of at least one of the first set of LEDs or the second set of LEDs to cause the color of light incident on the platform to match the color setpoint.

15 . The method of claim 14 , wherein the LEDs from the first set of LEDs and the second set of LEDs are arranged in an alternating pattern.

16 . The method of claim 14 , wherein:
the LEDs from the first set of LEDs are configured to emit the warm light at a color temperature of 2700 Kelvin; and the LEDs from the second set of LEDs are configured to emit the cool light at a color temperature of 6000 Kelvin.

17 . The method of claim 14 , wherein the color metric determined based on the first image comprises a mean hue intensity of the first image.

18 . A non-transitory computer-readable medium storing instructions that when executed by a processor causes the processor to:
capture a first image of a platform using a first camera of a plurality of cameras of an apparatus, wherein:
each camera is configured to capture images of at least a portion of a platform; and
an array of Light Emitting Diodes (LEDs) is configured to illuminate the platform, wherein the array of LEDs comprises:
a first set of the LEDs configured to emit warm light; and
a second set of LEDs configured to emit cool light;

determine a color metric based on the first image, wherein the color metric i

Assignees

• 7 Eleven Inc

Inventors

• Dalal Kyle
• Mirza Fahad
• Everheart Daniel

Classifications

• G06T2207/30208

  Marker matrix · CPC title

• G06T7/11

  Region-based segmentation · CPC title

• G06T7/70

  Determining position or orientation of objects or cameras (camera calibration G06T7/80) · CPC title

• G06T2207/30196

  Human being; Person · CPC title

• G06T2207/20081

  Training; Learning · CPC title