Systems and methods of legibly capturing vehicle markings

Patent metadata

Field	Value
Publication number	US-11651594-B2
Application number	US-202017113312-A
Country	US
Kind code	B2
Filing date	Dec 7, 2020
Priority date	Sep 19, 2016
Publication date	May 16, 2023
Grant date	May 16, 2023

Abstract

A system and method for legible capture of vehicle identification data includes video cameras and a computer. Recording attributes such as gain, gain shutter speed, and white balance are adjusted throughout ranges to maximize the likelihood of capturing at least one frame in which characters, such as those on the license plate, are legible. Successful capture of a legible frame may trigger storage of the data, while unsuccessful capture may trigger additional scans.

First claim

Having thus described various embodiments of the invention, what is claimed as new and desired to be protected by Letters Patent includes the following:

1. A video recording system comprising:
a first video recording device;
a second video recording device; and
a recording device manager comprising a processor and a memory, said processor configured to perform steps of:
activating the first video recording device to record video data and audio data using predefined standard recording attributes;
saving the video data and audio data from the first video recording device to the memory;
simultaneously activating the second video recording device to record video data using successive multiple values for at least a first recording attribute;
modifying a value of the first recording attribute until at least one image frame of legible alpha-numeric data is identified;
saving the at least one image frame of legible alpha-numeric data to the memory; and
modifying the second video recording device to record using the predefined standard recording attributes.

2. The video recording system of claim 1 , wherein the processor is further configured to perform the steps of:
extracting the legible alpha-numeric data from the at least one image frame; and
attaching the legible alpha-numeric data as metadata to the saved video data and audio data from the first video recording device.

3. The video recording system of claim 1 , wherein the first recording attribute comprises gain, shutter speed, focus, white balance, sharpness, backlight compensation, or iris aperture.

4. The video recording system of claim 1 , wherein the processor is further configured to perform a step of:
automatically identifying the at least one image frame of legible alpha-numeric data.

5. The video recording system of claim 1 , further comprising a display, wherein the processor is further configured to perform a step of:
presenting the display to a user; and
manually identifying the at least one image frame of legible alpha-numeric data by the user.

6. The video recording system of claim 1 , wherein the processor is further configured to perform a step of:
modifying the value of the first recording attribute by non-uniform increments.

7. The video recording system of claim 1 , wherein the processor is further configured to perform steps of:
recording video data with the second video recording device using multiple values for a second recording attribute; and
alternately modifying the value of the first recording attribute and the second recording attribute until at least one image frame of legible alpha-numeric data is identified.

8. The video recording system of claim 1 , wherein the value of the first recording attribute is initially determined by a time of day or an ambient light level.

9. The video recording system of claim 1 , wherein the first video recording device is a portable device adapted to be worn by a user and the second video recording device is adapted to be mounted to a vehicle.

10. A video recording system comprising:
a first video recording device;
a second video recording device; and
a recording device manager comprising a processor and a memory, said processor configured to perform steps of:
upon receiving a trigger, activating the first video recording device to record video data using at least a first recording attribute;
setting a first value for the first recording attribute;
successively automatically incrementing the first value of the first recording attribute to a next value until a desired value is reached;
wherein the desired value of the first recording attribute is when at least one image frame of legible alpha-numeric data can be identified;
saving the at least one image frame of legible alpha-numeric data to the memory as metadata;
activating the second video recording device simultaneously with the first video recording device; and
recording audio data and video data with the second video recording device using standard recording attributes.

11. The video recording system of claim 10 , wherein the first value of the first recording attribute is incremented by a predetermined amount in uniform intervals or in non-uniform intervals.

12. The video recording system of claim 10 , wherein the first recording attribute comprises: gain, shutter speed, focus, white balance, sharpness, backlight compensation, or iris aperture.

13. The video recording system of claim 10 , wherein the first value of the first recording attribute is incremented between a set upper limit and a set lower limit.

14. The video recording system of claim 13 , wherein the set upper limit and the set lower limit are determined by a time of day or an ambient light level.

15. The video recording system of claim 10 , wherein the trigger comprises: an audible signal, a sensed location of the first video recording device, a sensed speed of the first video recording device, or a manual activation.

16. A vehicle video recording system comprising:
a vehicle;
at least one sensor;
a first video recording device mounted to the vehicle; and
a recording device manager comprising a processor and memory, said processor configured to perform steps of:
upon receiving a trigger, activating the first video recording device to record video data using at least one first recording attribute;
wherein the trigger is activated based on a signal from the at least one sensor;
setting a first value for the at least one first recording attribute;
successively automatically incrementing the first value of the at least one first recording attribute to a next value until a desired value is reached;
wherein the desired value of the at least one first recording attribute is when at least one image frame of legible alpha-numeric data can be identified; and
saving the at least one image frame of legible alpha-numeric data to the memory.

17. The vehicle video recording system of claim 16 , wherein the at least one sensor determines when at least one event occurs, the at least one event selected from the set consisting of:
headlights of a vehicle are activated, a vehicle door is opened, a vehicle speed exceeds a predetermined amount, a vehicle speed is zero, a vehicle has impacted another object, a siren or alarm is activated, and emergency lights of a vehicle are activated.

18. The vehicle video recording system of claim 16 , wherein the at least one first recording attribute comprises: gain, shutter speed, focus, white balance, sharpness, backlight compensation, or iris aperture.

19. The vehicle video recording system of claim 16 , further comprising:
a second video recording device configured to record audio data and video data using standard recording attributes.

20. The vehicle video recording system of claim 19 , wherein the second video recording device is activated simultaneously with the first video recording device upon receiving the trigger.

Assignees

• Digital Ally Inc

Inventors

• Han Peng
• Dick Jeremy A

Classifications

• H04N7/183

  for receiving images from a single remote source · CPC title

• H04N23/60

  Control of cameras or camera modules · CPC title

• H04N5/77 Primary

  between a recording apparatus and a television camera · CPC title

• G06V20/63

  Scene text, e.g. street names · CPC title

• G06V20/625

  License plates · CPC title