Parallel precise measuring system for measuring surface area and perimeter of tiny object

A surface area and tiny technology, which is applied in the field of parallel precision measurement systems for the surface area and perimeter of tiny objects, can solve the problem of inability to quickly and accurately measure the surface area/perimeter of tiny objects.

Inactive Publication Date: 2012-04-04
NORTHEAST FORESTRY UNIVERSITY
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Problems solved by technology

In this way, the measurement function of the two-dimensional image measuring machine is expanded, and the limitation that it cannot quickly and accurately measure the surface area / circumference of tiny objects is solved

Method used

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  • Parallel precise measuring system for measuring surface area and perimeter of tiny object
  • Parallel precise measuring system for measuring surface area and perimeter of tiny object
  • Parallel precise measuring system for measuring surface area and perimeter of tiny object

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Embodiment Construction

[0010] 5.1 Two-dimensional image measuring machine

[0011] The two-dimensional image measuring machine is mainly composed of image-based displacement measurement system, image-based automatic focusing and aiming system and corresponding mechanical structure. The basic structure is as follows: figure 1 shown. Its basic working principle is: use two CCD cameras to pick up the position information of the vertical and horizontal optical scales respectively, and use the image card to connect with the computer, and determine the coordinate values ​​of the two directions through image processing technology. The aiming system adopts a CCD camera to receive the outline of the object under test imaged by the optical system, which is also connected to the computer through the image card. In this way, on the one hand, the defocus information of the workpiece can be extracted through image processing technology, and the optical system and the camera can be driven up and down by using a s...

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Abstract

The invention discloses a parallel precise measuring system for measuring the surface area and the perimeter of a tiny object. In the invention, geodesic active contour line is applied to the parallel measurement problem of irregular-shaped image multi-objective area / perimeter, a quick and precise measuring method is developed and is applied to a two-dimensional image measuring machine, so as to realize the quick and precise measurement of surface area / perimeter of multiple tiny objects. Besides, a novel centroid self-calibration technology is used, the calibration of pixel size equivalent can be finished accurately without any standard test pieces, finally, the actual surface area and perimeter of the tiny object can be obtained. A guide rail is moved during calibration, and the displacement of the guide rail is precisely measured by a double-frequency laser.

Description

1. Technical field [0001] Image measurement technology in machine vision is a new type of measurement technology formed in the field of measurement in the past 20 years. It uses images as a means or carrier for detection and transmission of information, and completes geometric measurement, biological product detection, aerial remote sensing measurement, etc. Various measurement tasks. This technology can adapt to the measurement requirements of many new manufacturing processes, such as the measurement of easily deformable parts size, small size, curved surface profile and part hole distance. This patent aims at the area / perimeter measurement problem in the field of geometric quantity measurement, and develops a parallel and efficient measurement system for the area / perimeter of tiny objects. 2. Background technology [0002] In the field of image measurement, the measurement of the pixel area (referring to the number of pixels contained in the image target) of the image tar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/28G01B11/03G01B11/08
Inventor 赵鹏田少卿
Owner NORTHEAST FORESTRY UNIVERSITY
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