Measuring method and system based on image identification

A technology of image recognition and measurement method, which is applied in the field of image recognition and can solve problems such as the inability to determine the distance between the shooting device and the object to be measured

Inactive Publication Date: 2013-04-24
北京华力必维科技股份有限公司
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  • Application Information

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Problems solved by technology

Both of the above two methods need to measure the object distance of the object to be measured, which is then limited by the distance between the camera device and the object to be meas...

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  • Measuring method and system based on image identification
  • Measuring method and system based on image identification

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Embodiment Construction

[0032] In order to have a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed descriptions are provided in conjunction with the embodiments.

[0033] Such as figure 1 As shown, it is a flow chart of a measurement method based on image recognition in a preferred embodiment of the present invention, and its steps are:

[0034] Step S101 , taking images of the reference object and the object under test at the same distance from the shooting window in the same shooting window. Wherein, the object to be measured may be a static object or a moving object. The reference object is generally selected as a stationary object, so as to facilitate subsequent identification of the reference object. And the reference object should be as simple in structure or easy to obtain as possible. For example, the reference object is a coin. The captured images of the reference object and the object to be measured may be images o...

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Abstract

The invention provides a measuring method based on image identification. The steps are that: shooting the images of a reference object and a to-be-detected object in the same shooting window, wherein the distance of the reference object and the shooting window and the distance of the to-be-detected object and the shooting window are the same; respectively calculating the occupied pixel number of the reference object and the to-be-detected object in the images; identifying the reference object, and acquiring the actual data of the reference object; confirming the corresponding actual data of each pixel inside the images according to the actual data of the reference data; and confirming the actual data of the to-be-detected object according to the corresponding actual data of each pixel. Due to the fact that the images of the reference object and the to-be-detected object with the same distance to the shooting window are shot in the same shooting window, according to the known actual data of the reference object and the pixel number of the reference object in the images, the corresponding actual data of each pixel in the images are calculated, and then, the pixel number of the to-be-detected object is combined, and therefore the actual data of the to-be-detected object can be confirmed.

Description

technical field [0001] The invention relates to an image recognition method, in particular to a measurement method based on image recognition. Background technique [0002] Sometimes when we want to measure the length of an object, the moving distance or speed of an object, the measuring instrument is often not easy to obtain, or even if there is a measuring instrument, the measured object or the environment in which the measured object is located is not convenient for measurement. And with the development of the current society, people are paying more and more attention to the moving distance or moving speed of objects in a short period of time, such as the flying distance or speed of various balls, or the speed of a car while driving. [0003] However, current electronic devices, especially mobile devices, are equipped with camera devices, which have camera and video recording functions. And now image recognition technology is very mature. Therefore, various measurements...

Claims

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Application Information

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IPC IPC(8): G01B11/02G01B11/04G01B11/28G01P3/68G01P15/03
Inventor 张智明
Owner 北京华力必维科技股份有限公司
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