WO2021136499A1

WO2021136499A1 - Dynamic object sensing method and device

Info

Publication number: WO2021136499A1
Application number: PCT/CN2020/142106
Authority: WO
Inventors: 于毅欣
Original assignee: 于毅欣
Priority date: 2020-01-05
Filing date: 2020-12-31
Publication date: 2021-07-08
Also published as: CN111062369A

Abstract

A dynamic object sensing device, comprising a camera and a software system. The camera is an image frame acquisition device having laser emission and reception functions or/and infrared emission and reception functions, and is connected to the software system by means of a wired or/and wireless network (or a line). The software system is a system that receives, stores, and analyzes camera image frame data and performs dynamic sensing. The device can work or preferentially works by capturing only visible light in a certain wavelength range, can determine whether there is an object moving very slowly by comparing with a particular previous frame, and can deploy and work with multiple cameras at the same time to achieve the purpose of multi-angle and all-direction security and safety.

Description

Method and device for sensing dynamic objects

Technical field

The invention relates to the field of sensing and monitoring, in particular to a method and device for sensing dynamic objects.

Background technique

The traditional infrared (or laser) passing through the detector is easy to be used by people to use an infrared beam (or laser beam) transmitter to illuminate the receiver to make the infrared (or laser) passing through the detector invalid (as shown in the movie) That way). Traditional thermal imager detectors may not be able to detect people wrapped up all over the body (as shown in the movie). The present invention uses a laser or infrared camera to produce a device and method for sensing motion and/or picture changes, which can detect changes in the picture at least to a certain extent, and at least to a certain extent avoid being affected by the infrared beam ( (Or laser beam) transmitter is invalidated to avoid the situation where the person wrapped in the whole body is not detected, and the distance that can be sensed can exceed 10 meters or even more than 30 meters or 50 meters. Another feature of the present invention is that it can determine whether there is an object moving extremely slowly by comparing a certain previous frame, so as to make up for the possible safety hazards of most cameras for objects with extremely slow motion. Another feature of the present invention is that multiple cameras can be deployed and work at the same time, so as to achieve the purpose of multi-angle and omni-directional security.

Summary of the invention

According to one aspect of the present disclosure, a device for sensing a dynamic object is provided, which is characterized in that it includes a camera and a software system.

The camera is an image frame acquisition device with laser transmitting and/or receiving functions or infrared transmitting and receiving functions, and is connected to the software system through a wired or wireless network (or line).

The software system is a system that receives camera image frame data and stores, analyzes and senses dynamics.

According to one aspect of the present disclosure, there is provided a method for sensing a dynamic object, which is characterized in that it includes:

The camera receives certain laser or infrared rays emitted by itself, and sends the image frame to the software system through a wired or wireless network (or line).

The software system compares the latest received image frame with the previous image frame information to determine whether there is a change.

Preferably, as an optional implementation manner, the camera may only accept certain laser or infrared rays (laser or optical or infrared in a certain wavelength range) to form image frame information.

Preferably, as an optional implementation, the camera can add a filter to only accept certain laser or infrared rays (laser or optical or infrared in a certain wavelength range) to form image frame information .

Preferably, as an optional implementation manner, a certain wavelength or a certain stage wavelength filter (for example, 16nm or 37nm or 67nm wavelength) can be added to the camera to make the camera complete or close to accept only a certain wavelength of light. .

Preferably, as an optional implementation manner, the camera may be a common camera with an infrared emission function.

Preferably, the camera has emitted laser or \ and infrared rays (laser or \ and light or \ and infrared rays in a certain wavelength region) that includes light of wavelengths that can be filtered out by a filter to ensure that content can be generated Image.

Preferably, the image frames are stored in a local storage device.

Further, as an optional implementation manner, it may be stored in the memory (short-term non-persistent storage), or stored in the hard disk or flash memory (long-term persistent storage).

Preferably, the current image frame information is compared with the image frame information of the previous frame, and when the rate of change exceeds a certain threshold, it is considered that a change has occurred.

Preferably, according to the information configured in advance, it is determined how many frames before the image frame information is compared, and when the rate of change exceeds a certain threshold, it is considered that a change has occurred (for example, compared with the previous tenth frame of image).

Detailed ways

The following examples are used to illustrate the present invention, but not to limit the scope of the present invention.

Example 1

Step 1: The built-in infrared or laser transmitter of the camera emits infrared or laser, and the camera obtains the image frame information with a wavelength of 37 nm through the filter, and transmits the image frame information to the software system.

Step 2: Compare the current image frame information with the image frame information of the previous frame. When the image difference exceeds the threshold value read in the configuration file (for example, 3/1000), it is considered that the picture has changed.

Step 3: Compare the current image frame information with the image frame information of the previous 10th frame. When the image difference exceeds the threshold value read in the configuration file (for example, 3/1000), it is considered that the picture has changed.

Further, the 10th frame before the comparison here is obtained through configuration in the configuration file.

Step 4: When the software system finds that the change of the image frame exceeds the threshold value read in the configuration file (for example, 3/1000), it considers that the picture has changed, and one of the prompts that the software system can give is to make a sound .

The above are specific embodiments of the present invention, but the protection scope of the present invention should not be limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention shall be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be defined by the claims. The scope of protection shall prevail.

Claims

A device for sensing dynamic objects, which is characterized by comprising: a camera and a software system;

The camera is an image frame acquisition device with laser transmitting and receiving functions or infrared transmitting and receiving functions, and is connected to the software system through a wired or wireless network (or line);

The software system is a system that receives camera image frame data and stores, analyzes and senses dynamics.
A method for sensing a dynamic object, characterized in that it comprises:

The camera receives certain laser or infrared rays emitted by itself, and sends the image frame to the software system through a wired or wireless network (or line);

The software system compares the latest received image frame with the previous image frame information to determine whether there is a change.
The method according to claim 2, wherein the camera receives certain laser or infrared rays emitted by itself, and sends the image frame to the software system through a wired or wireless network (or line), and include:

As an optional implementation, the camera may only accept a certain laser or infrared radiation (laser or optical or infrared in a certain wavelength range) to form image frame information;

As an optional implementation, the camera can add a filter to only accept certain laser or infrared rays (laser or optical or infrared in a certain wavelength range) to form image frame information;

As an optional implementation manner, the camera may be a common camera with infrared emission function.
The method according to claim 2, wherein the software system compares the received latest image frame with previous image frame information to determine whether there is a change, further comprising:

Save the image frame to the local storage device;

Use the current image frame information to compare with the image of the previous frame. When the rate of change exceeds a certain threshold, it is considered that there has been a change;

According to the pre-configured information, it is determined at most how many frames before the image frame information is compared. When the rate of change exceeds a certain threshold, it is considered that a change has occurred.
A computer readable and writable medium on which a computer program and related data are stored, and is characterized in that when the program is executed by a processor, the related computing functions and content of the present invention are realized.
An electronic device, characterized in that it comprises:

One or more processors;

One or more graphics cards (optional);

The storage device is used to store one or more programs.