Volume measurement method and system

A volume measurement and volume technology, applied in the field of logistics, can solve the problems of high visual system splicing and processing capabilities, high hardware requirements of test equipment, expensive lasers, etc., to achieve high measurement accuracy, fast measurement speed, and large measurement range Effect

Active Publication Date: 2019-03-08
SF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this measurement method occupies a large area. Since the industrial camera needs to cover the field of view of the measured object, its volume is almost twice that of the measured object. Therefore, the entire set of equipment also needs a stable bracket to fix it.
In addition, this set of equipment is relatively complicated, requiring expensive lasers and industrial cameras, complex systems, high hardware requirements for test equipment, and high requirements for the splicing and processing capabilities of the vision system

Method used

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  • Volume measurement method and system
  • Volume measurement method and system

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Experimental program
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Embodiment 1

[0058] This embodiment provides a volume measurement system, comprising:

[0059] The measurement area information acquisition unit: configured to acquire the first information of the measurement area when there is no object under the current viewing angle and the first depth image information of the measurement area when there is the object under the current viewing angle based on the 3D vision system, the 3D vision system is located in the measurement area above the area;

[0060] The target acquisition unit of the measured object is configured to identify the outer contour of the measured object by comparing the gray values ​​of the first information and the first depth image information collected under different viewing angles, and obtain the first outline of the measured object's outer contour. Depth information, and fill the area defined by the outer contour of the measured object to obtain the measured object target and the size information of the measured object target...

Embodiment 2

[0120] The features of this embodiment that are the same as those of Embodiment 1 will not be described in detail. The features of this embodiment that are different from Embodiment 1 are:

[0121] The 3D vision acquisition module can be placed obliquely above the three-dimensional diagonal of the measured object, such as Figure 6 As shown, the observation angle of the camera can cover the three main surfaces of the entire measured object. By solving the information on the three surfaces, more volume details can be obtained and the measurement accuracy can be improved. Likewise, this installation method is simple and takes up little space. While measuring the volume, you can take pictures of the measured object.

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Abstract

The invention relates to a volume measuring method and system, and the method is as follows: acquiring first information of the measurement area and first depth image information of the measurement area when the object to be measured exists under the current visual angle based on the 3D visual system, by comparing the first information collected at different viewing angles, and the gray value of the first depth image information identifies the outer contour of the object to be detected, the first depth information of the outer contour of the object to be measured is obtained, and the outer contour definition region of the object to be detected is filled, so as to obtain the object of the object to be detected and the size information of the object of the object to be detected; performing block division on the outer contour region of the object to be measured according to the preset relation between the first depth information and the divided blocks, generating block information; according to the block information, and obtaining the volume of the object to be measured according to the preset relation between the size information of the object to be measured and the volume of the object to be measured, testing is carried out on the basis of the 3D vision, and the measured object is directly measured, the measuring speed is high, the measuring precision is high, and the measuringrange is large.

Description

technical field [0001] The invention relates to the field of logistics, in particular to a volume measurement method and system. Background technique [0002] With the rapid growth of logistics and transportation, the efficiency of logistics and transportation is gradually unable to meet the needs of traditional transportation. An important part of the logistics link is to measure the volume of the logistics goods. Volume measurement is the basis of cargo circulation and transportation, and it is very important to choose the appropriate transport vehicle, ship, and aircraft for the appropriate volume. However, in the current logistics system, for the large-volume measurement of pallet stacks, most of the work of measuring the volume of objects is still using the traditional method of measuring tape. [0003] This measurement method has a large measurement error, and the volume estimation and selection of the appropriate means of transportation after measurement are all man...

Claims

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Application Information

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IPC IPC(8): G01B11/00
CPCG01B11/00G01B5/0021G01B11/25G06T7/593G06T2207/10028G06T7/62G06T2207/20021G06T2207/30112G01B11/24G01B11/022G01B11/024G06T7/0004G06T7/11G06T17/00G06T7/521G06T7/13H04N13/254H04N13/239G01B11/22
Inventor 刘慧泉
Owner SF TECH
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