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Volume measurement method and device for target object

A target object and volume measurement technology, applied in the field of measurement, can solve the problems of high cost and poor portability

Active Publication Date: 2019-11-22
北京中航安通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the embodiments of the present invention is that the measurement method of measuring the volume of the object to be measured by using 3D scanning technology in the prior art has a large cost and poor portability.

Method used

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  • Volume measurement method and device for target object
  • Volume measurement method and device for target object

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Effect test

Embodiment 1

[0058] An embodiment of the present invention provides a method for measuring the volume of a target object, including a camera and a ranging sensor arranged above the target object, wherein the ranging sensor is an ultrasonic sensor, and the measurement of the target object is completed by combining the camera and the ultrasonic sensor. The ultrasonic sensor can Measuring the distance within a certain angle is better than laser sensors that can only measure the distance between specific points. Here, one camera and one ranging sensor can be selected to be set above the target object, which can effectively reduce the measurement cost. Such as figure 1 As shown, the volume measurement method of the target object in this embodiment includes the following steps:

[0059] S11. Obtain the height to be measured of the target object, and figure 2 It can be seen that the height h to be measured is 3 is the distance between the highest point on the top of the target object and the ...

Embodiment 2

[0096] An embodiment of the present invention provides a volume measurement device for a target object, such as Figure 5 As shown, including cameras and ranging sensors set above the target object, including:

[0097] The first obtaining module 51 is used to obtain the height to be measured of the target object, and the height to be measured is the distance between the highest point on the top of the target object and the plane where the bottom is located;

[0098] The second acquisition module 52 is used to acquire the calibration image of the target object, and calculate the first fitting function value and the second fitting function value of the calibration image;

[0099] A correction module 53, configured to correct the calibration image;

[0100] The edge detection module 54 is used to carry out edge detection to the calibration image to obtain the outline of the calibration image, and obtain the circumscribed rectangle of the calibration image according to the outlin...

Embodiment 3

[0124] An embodiment of the present invention provides a computer storage medium on which computer instructions are stored. When the instructions are executed by a processor, the steps of the method for measuring the volume of a target object in Embodiment 1 are implemented. The storage medium also stores the image data of the calibration image obtained by the camera, the first height of the distance from the distance sensor to the plane where the bottom of the target object is obtained by the distance sensor, and the second height of the distance from the highest point of the top of the target object to the distance sensor. Height, the first fitting function value, the second fitting function value, the length, width and volume of the target object, internal parameters of the camera and distortion parameters, etc.

[0125] Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memor...

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Abstract

The invention discloses a volume measurement method and device for a target object. The volume measurement method comprises a camera and a distance measurement sensor which are disposed above the target object, and comprises the steps: obtaining the to-be-measured height of the target object, the to-be-measured height being the distance between the highest point of the top of the target object andthe plane where the bottom of the target object is located; obtaining a calibration image of the target object, and calculating a first fitting function value and a second fitting function value of the calibration image; performing edge detection on the calibration image to obtain a contour of the calibration image, and obtaining an external rectangle of the calibration image according to the contour; according to the first fitting function value and the second fitting function value, calculating the length and the width of the circumscribed rectangle; and calculating the volume of the targetobject according to the to-be-measured height, length and width. The volume measurement method can improve the measurement precision of the volume of the target object, is lower in cost, is better intransportability, and can quickly complete the volume measurement of a large number of target objects.

Description

technical field [0001] The invention relates to the field of measurement technology, in particular to a volume measurement method and device for a target object. Background technique [0002] Measuring the volume of objects is more common in people's daily life. For example, when people post packages, they need to send them through various courier companies. However, the courier company usually charges the package based on the weight of the package. There is another way It is to charge the fee by measuring the volume of the package, and the post office chooses to measure the volume of the package to charge the postage fee of the package. Therefore, it is of great significance to study the volume measurement of objects. [0003] At present, the traditional object volume measurement method generally scans the image of the object to be measured by 3D scanning technology to obtain the volume of the object to be measured. Multiple cameras in different directions will cause a la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/13G06T7/80
CPCG06T7/0002G06T7/80G06T7/13
Inventor 于德池
Owner 北京中航安通科技有限公司
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