Monitoring camera, camera parameter determining method and storage medium

Patent metadata

Field	Value
Publication number	US-12047716-B2
Application number	US-202318135393-A
Country	US
Kind code	B2
Filing date	Apr 17, 2023
Priority date	Jan 28, 2020
Publication date	Jul 23, 2024
Grant date	Jul 23, 2024

Abstract

The monitoring camera is capable of performing artificial intelligence, and includes a capturing unit configured to capture an image of the imaging area, a detection unit configured to detect a person in the captured image of the imaging area based on the artificial intelligence, and a controller configured to determine a position of a face of the person in the captured image and determines a camera parameter of the monitoring camera based on a brightness or a moving speed of the face.

First claim

What is claimed is:

1. A monitoring camera capable of performing artificial intelligence, the monitoring camera comprising:
an image sensor configured to capture an image of an imaging area;
a detector configured to detects a vehicle in the captured image of the imaging area based on the artificial intelligence; and
a controller configured to determine a camera parameter of the monitoring camera and tone curve feature based on headlights and a moving speed of the vehicle in the captured image.

2. The monitoring camera according to claim 1 ,
wherein the controller sets the camera parameter.

3. The monitoring camera according to claim 1 ,
wherein when the vehicle in the captured image is not detected, the controller determines and sets the camera parameter so that the detector detects the vehicle in the captured image captured by the image sensor.

4. The monitoring camera according to claim 1 ,
wherein the camera parameter is exposure time of the image sensor, and
wherein the controller determines the exposure time so that the detector detects a vehicle type, a vehicle color, a vehicle category, or a license plate of the vehicle in the captured image captured by the image sensor.

5. The monitoring camera according to claim 1 ,
wherein the camera parameter is a gain of the image sensor, and
wherein the controller determines the gain so that the detector detects a vehicle type, a vehicle color, a vehicle category, or a license plate in the captured image captured by the image sensor.

6. The monitoring camera according to claim 1 ,
wherein the camera parameter is a rotation amount of at least of one of pan rotation and tilt rotation of the image sensor, and
wherein the controller determines the rotation amount so that the detector detects a vehicle type, a vehicle color, a vehicle category, or a license plate of the vehicle in the captured image captured by the image sensor.

7. The monitoring camera according to claim 1 ,
wherein the camera parameter is a zoom magnification of the image sensor, and
wherein the controller determines the zoom magnification so that the detector detects a vehicle type, a vehicle color, a vehicle category, or a license plate of the vehicle in the captured image captured by the image sensor.

8. A monitoring camera capable of performing artificial intelligence, the monitoring camera comprising:
an image sensor configured to capture an image of an imaging area;
a detector configured to detect a person in the captured image of the imaging area based on the artificial intelligence; and
a controller configured to determine a position of a face of the person in the captured image and determine a camera parameter of the monitoring camera based on a brightness or a moving speed of the face,

wherein the camera parameter is a tone curve used to generate the captured image, and
wherein the controller determines the tone curve so that the detector detects a vehicle type, a vehicle color, a vehicle category, or a license plate in the captured image captured by the image sensor.

9. A monitoring camera capable of performing artificial intelligence, the monitoring camera comprising:
an image sensor configured to capture an image of an imaging area;
a detector configured to detect a person in the captured image of the imaging area based on the artificial intelligence;
a controller configured to determine a position of a face of the person in the captured image and determine a camera parameter of the monitoring camera based on a brightness or a moving speed of the face;
a communication circuit configured to send a face cut-out image obtained by cutting out the face in the captured image to a face collating server communicably connected with the monitoring camera, when the detector detects the face of the person in the captured image captured by the image sensor after the camera parameter is set and a detection score of the face is equal to or larger than a threshold; and

a character recognition processor configured to recognize the license plate and collates the license plate with a blacklist, when the detector detects the vehicle type or the vehicle color of the vehicle and the license plate of the vehicle in the captured image captured by the image sensor after the camera parameter is set.

10. A camera parameter determining method performed by a monitoring camera performing artificial intelligence, the camera parameter determining method comprising:
capturing an image of an imaging area;
detecting a vehicle in the captured image of the imaging area based on the artificial intelligence; and
determining a camera parameter of the monitoring camera and tone curve feature based on headlights and a moving speed of the vehicle in the captured image.

11. A non-transitory computer-readable recording medium recording a program for causing a computer to execute the camera parameter determining method set forth in claim 10 .

Assignees

• I Pro Co Ltd

Inventors

• Koga Masashi
• Ikeda Jun
• Kawakami Satoshi

Classifications

• H04N23/11

  for generating image signals from visible and infrared light wavelengths · CPC title

• G06V40/161

  Detection; Localisation; Normalisation · CPC title

• G06V40/10

  Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands · CPC title

• G06V20/52

  Surveillance or monitoring of activities, e.g. for recognising suspicious objects (recognising microscopic objects G06V20/69) · CPC title

• G06V10/993

  Evaluation of the quality of the acquired pattern · CPC title