A method and device for measuring the moving speed of an object

A technology of moving speed and objects, applied in the computer field, can solve the problems of poor efficiency and high measurement cost, and achieve the effect of reducing measurement cost and improving measurement efficiency

Inactive Publication Date: 2019-03-08
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing technology has the following defects: it is necessary to install wave source processing devices in the measuring equipment to transmit waves to moving objects and receive their echoes, which makes the measurement cost higher and the efficiency poorer

Method used

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  • A method and device for measuring the moving speed of an object
  • A method and device for measuring the moving speed of an object
  • A method and device for measuring the moving speed of an object

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] figure 1 It is a schematic flowchart of a method for measuring the moving speed of an object provided in Embodiment 1 of the present invention. The method can be performed by a device for measuring the moving speed of an object, the device is implemented by software and / or hardware, and can be integrated into an intelligent terminal such as a smart phone, a tablet computer or a personal digital assistant. see figure 1 The execution operations included in the method for measuring the moving speed of an object provided in this embodiment are specifically as follows.

[0025] S110. Obtain the target object selected by the user in the image displayed in the viewfinder frame of the smart terminal, where the image is collected by the camera.

[0026] Exemplarily, acquiring the target object selected by the user in the image displayed in the viewfinder frame of the smart terminal includes: detecting a touch gesture that the user acts on the image displayed in the viewfinder ...

Embodiment 2

[0039] Figure 2A It is a schematic flowchart of a method for measuring the moving speed of an object provided by Embodiment 2 of the present invention. In this embodiment, on the basis of the first embodiment above, the operation of "obtaining the image distances of the images of the target object formed by the camera at at least two time points" is optimized. see Figure 2A The execution operations included in the method for measuring the moving speed of an object provided in this embodiment are specifically as follows.

[0040] S210. Obtain the target object selected by the user in the image displayed in the viewfinder frame of the smart terminal, where the image is collected by the camera.

[0041] S220. Control the camera to focus on the target at least two moments respectively.

[0042] S230. Acquire the distance between the lens in the camera and the photosensitive chip each time the target is focused on, and use it as the image distance of the image of the target fo...

Embodiment 3

[0059] image 3 It is a schematic structural diagram of a device for measuring the speed of an object provided by Embodiment 3 of the present invention. see image 3 , the specific structure of the device is as follows:

[0060] The target acquisition unit 310 is configured to acquire the target selected by the user in the image displayed in the viewfinder frame of the smart terminal, wherein the image is collected by the camera;

[0061] An image distance acquiring unit 320, configured to acquire the image distances of the images of the target object formed by the camera at at least two moments;

[0062] The moving speed determining unit 330 is configured to determine the moving speed of the target object according to the acquired image distance, the focal length corresponding to the camera, and the at least two moments.

[0063] Exemplary, the image distance acquisition unit 320 includes:

[0064] A focusing subunit 3201, configured to control the camera to focus on the ...

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Abstract

The embodiment of the invention discloses an object movement speed measurement method and device. The method comprises the steps that a target object selected by a user in an image displayed in the viewing frame of an intelligent terminal is acquired, and the image is obtained by acquisition of a camera; image distance of the images of the target object formed by the camera under at least two moments respectively is acquired; and movement speed of the target object is determined according to the acquired image distance, the corresponding focal length of the camera and at least two moments. According to the technical scheme, measurement cost can be reduced and measurement efficiency can be enhanced.

Description

technical field [0001] The embodiments of the present invention relate to the field of computer technology, and in particular to a method and device for measuring the moving speed of an object. Background technique [0002] At present, in many application scenarios, there is a need to measure the moving speed of objects. However, in the prior art, a specific device dedicated to measuring the moving speed is usually required, and the moving speed of the object is calculated based on the reflection principle of laser light, electromagnetic wave or some other waves. [0003] The existing technology has the following defects: a wave source processing device needs to be installed in the measuring equipment to transmit waves to moving objects and receive their echoes, which makes the measurement cost higher and the efficiency lower. Contents of the invention [0004] Embodiments of the present invention provide a method and device for measuring the moving speed of an object, so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P3/38
Inventor 贺驰光
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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