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Steel bar counting method

A counting method and steel bar technology, applied in calculation, image data processing, instruments, etc., can solve the problems of large counting error and inability to use a large number of stably, and achieve fast and accurate analysis and strong anti-environmental interference effects

Pending Publication Date: 2019-05-03
北京伟景智能科技有限公司
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Problems solved by technology

Compared with manual counting, this technical solution has the characteristics of fast and automatic, but this technical solution has a large counting error under the influence of too bright or too dark environment or the corrosion of steel bars, and cannot be used stably in large quantities

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Embodiment Construction

[0017] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0018] see Figure 1-3 , the embodiment of the present invention specifically includes the following steps:

[0019] (1) Stereo calibration of the binocular camera;

[0020] (2) The line laser emitted by the control line laser transmitter is projected to a certain place on the end face of the steel bar;

[0021] (3) Obtain the time-stamped left image and right image of the steel bar end face respectively by the left camera and the right camera of the binocular camera;

[0022] (4) Stereoscopic correction is carried out to the acquired left image and right image, so that the corrected left image and right image line are aligned;

[0023] (5) Ma...

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Abstract

The invention provides a steel bar counting method. The method comprises the steps that measuring three-dimensional data of steel bar end face line laser scanning lines through a line laser binocularmeasurement method; completely scanning the end surface of the reinforcing steel bar by using line laser, and obtaining complete contour three-dimensional data of the end surface of the reinforcing steel bar by using a line laser binocular measurement method; and counting steel bars by using a particle segmentation counting method. According to the invention, the moving line laser and the binocular camera are used to obtain the end face contour image of the bundled steel bar; obtaining steel bar number information by processing end face contour image data, line laser can perfectly restore thesteel bar end face contour image information, and a binocular camera can stably obtain laser line images, can adapt to various illumination environments and is high in environmental interference resistance. The three-dimensional data is quantized, watershed transformation is utilized to be converted into the gray level image, the center point and the number of the steel bars are determined according to the gray level image, the number of the steel bars can be rapidly and accurately analyzed, and the problems that labor and time are wasted, efficiency is low and accuracy is low when the steel bars are counted in piles or bundles are solved.

Description

technical field [0001] The invention relates to the technical field of electron optical detection, in particular to a steel bar counting method. Background technique [0002] In the process of steel production and sales, the quantity of steel bars is a very important indicator. However, because the diameters of steel bars are generally small, the cross-sections are irregular, and the cross-sections vary widely. Problems with accurate counting. [0003] In the existing technical solutions, the most common counting method is manual counting. Counting workers mainly use colored pens of different colors to mark multiple times to distinguish counted and uncounted steel bars, which is not only time-consuming and labor-intensive , low efficiency, and after a long time of high-intensity work, the human eyes and brain are prone to fatigue, and the counting error will greatly increase. [0004] The way of manual counting can no longer meet the needs of current automated production. ...

Claims

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Application Information

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IPC IPC(8): G06T7/60G06T7/66G06T7/80
Inventor 董霄剑曾洪庆
Owner 北京伟景智能科技有限公司
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