Volume measurement method and system based on depth camera

A technology of depth camera and volume measurement, which is applied in the field of computer vision, can solve problems such as cumbersome operation, complicated calibration process, and high requirements for camera installation, and achieve accurate calculation results, high measurement accuracy, and accurate measurement of package height.

Active Publication Date: 2017-06-13
HANGZHOU HIKVISION DIGITAL TECH
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This patent uses multiple cameras to reconstruct the object in three dimensions. The calibration process is relatively complicated, and th

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  • Volume measurement method and system based on depth camera
  • Volume measurement method and system based on depth camera
  • Volume measurement method and system based on depth camera

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[0031] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0032] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

[0033] The first embodiment of the present invention relates to a volume measurement method based on a depth camera, figure 1 is a schematic flow chart of the volume measurement method based on the depth camera. As shown in the figure, the depth camera-based volume measurement method includes the following steps:

[0034] Step 101, acquire a dep...

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Abstract

The invention relates to the technical field of computer vision, and discloses a volume measurement method and system based on a depth camera. The method includes the steps: acquiring depth images with objects to be measured from the depth camera; extracting the objects to be measured from the depth images according to depth information to obtain target areas of the objects to be measured; converting two-dimensional image coordinates of pixels in the target areas of the objects to be measured to three-dimensional coordinates under a three-dimensional camera coordinate system by the aid of pre-calibrated parameters of the depth camera; calculating heights and lengths and widths of the objects to be measured according to the three-dimensional coordinates of the objects to be measured under the three-dimensional camera coordinate system, and calculating volumes of the objects to be measured. The depth images comprise depth information of the objects to be measured. The method is high in measuring accuracy and simple and convenient to use and can not be affected by shooting angles and heights, and mounting heights and angles of the camera cannot be calibrated.

Description

technical field [0001] The invention relates to the technical field of computer vision, in particular to a volume measurement method and system based on a depth camera. Background technique [0002] With the rapid development of the logistics industry, the number of packages is increasing, and the demand for package volume measurement is also increasing. The traditional measurement method is to use scale tools or measuring equipment to measure. The scale tool measurement method has slow measurement speed and low efficiency and cannot meet real-time needs; the equipment measurement method generally uses a light curtain sensor system for measurement, which has a large shape and volume and needs to cooperate with the corresponding controller. The entire installation process is more complicated. Therefore, the measurement method based on machine vision is widely used, and only one camera needs to be installed to complete the measurement purpose. It has fast measurement speed, h...

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Application Information

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IPC IPC(8): G01B11/00
Inventor 李杰毛慧沈林杰俞海浦世亮
Owner HANGZHOU HIKVISION DIGITAL TECH
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