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Measuring device and method for digital image built-in virtual ruler

A measurement method and ruler technology, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problem that the size of the target object cannot be measured accurately, and achieve the effect of automatic calculation, small error and maximum realization

Inactive Publication Date: 2017-10-24
广州市九州旗建筑科技有限公司
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Problems solved by technology

[0005] The present invention provides a digital image built-in virtual ruler measuring device and method to solve the problem in the prior art that the size of difficult-to-reach target objects cannot be accurately measured

Method used

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  • Measuring device and method for digital image built-in virtual ruler

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Embodiment Construction

[0045] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0046] The embodiment of the invention discloses a measuring device with a built-in virtual ruler in a digital image, refer to figure 1 Shown, including:

[0047] The grid projection unit 101 is used to project a grid-like light spot on the plane where the target object is located;

[0048] The image acquisition unit 102 is configured to acquire ...

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Abstract

The invention provides a measuring device and method for a digital image built-in virtual ruler. The device comprises a grid projection unit, an image acquisition unit and a calculation unit, wherein the grid projection unit is used for projecting on the plane of a target object to form grid light spots; the image acquisition unit is used for acquiring a light spot image including the grid light spots and the target object in the imaging view; and the calculation unit is used for analyzing and processing the light spot image, and calculating the actual size of the target object via the pixel size of the target object according to the proportional relation between the pixel distance between two light spots in the selected light spot image and the actual distance between the two light spots. By carrying the virtual ruler in the digital image, the problems brought by an external ruler are solved; and the noncontact measuring method can be used for measuring the size of any macro or micro object, particularly has obvious advantages on measurement of some target objects that are difficult to touch, and is high in measuring precision and small in error.

Description

Technical field [0001] The invention relates to the technical field of digital image measurement, in particular to a measurement device and method with a built-in virtual ruler in digital images. Background technique [0002] With the acceleration of the global economic integration process, the development of the manufacturing industry has entered a golden age, and further requirements have been placed on measurement technology. Among them, accuracy and reliability are the two most important indicators for measuring measurement technology. At present, the measurement accuracy of measurement technology has been greatly improved, from the original 0.1mm accuracy to 10μm or even higher. [0003] Traditional measurement methods generally use rulers, such as micrometers, vernier calipers, etc., to observe and read values ​​with the naked eye or magnifying glass. However, the measurement accuracy is very limited and it is difficult to measure the size of some tiny objects; image process...

Claims

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Application Information

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IPC IPC(8): G01B11/00
CPCG01B11/00
Inventor 黄仕平孙英宁陈智杰
Owner 广州市九州旗建筑科技有限公司
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