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Container lockhole coarse positioning and tracking method

A technology for container locks and coarse positioning, which is applied in measuring devices, optical devices, character and pattern recognition, etc., which can solve the problems of poor lockhole effect, reduced recognition accuracy, and low recognition rate

Active Publication Date: 2016-09-21
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0004] To sum up, when realizing container positioning, the existing methods cannot have the following deficiencies: (1) Using corner points to represent keyholes reduces the recognition accuracy (2) The effect on worn keyholes is not good (3) Under the condition of insufficient light low recognition rate etc.

Method used

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  • Container lockhole coarse positioning and tracking method

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Embodiment Construction

[0037] The specific implementation of the computer vision-based rough positioning method for container lockholes of the present invention will be described in detail below in conjunction with the embodiments.

[0038] Such as Figure 1-7 As shown, a kind of container keyhole coarse positioning and tracking method of the present invention, concrete method is as follows:

[0039] Step 1: Use an industrial camera mounted on a spreader to collect a series of container images for training, which have a width of W 0 , with height H 0 , the unit is pixel, and each picture only includes one side of the container, that is, only includes 2 keyholes; in this embodiment, as attached figure 1 , W 0 =3264,H 0 =2448;

[0040] Step 2: Manually extract the keyhole area in part of the container image as a positive sample pos i (i=1,2,...N), other areas of the image are negative samples neg j (j=1,2,...M), N, M represent the quantity of positive and negative samples, and the positive and ...

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Abstract

The invention discloses a container lockhole coarse positioning and tracking method, and the method comprises the steps: an industrial camera which is arranged on a lifting device is used for collecting a series of container images for training, positive and negative samples in a part of container images are manually extracted, the positive and negative sample images are normalized, the industrial camera which is arranged on the lifting device is used for collecting the images of a to-be-detected container in real time, the area of approximate lockhole image region is calculated, the images are arranged according to sizes, the image region is calculated, according to the lockhole image region, a detection region is updated, the above steps are repeated to realize the tracking detection of the container lockhole position. The advantages of the method comprises: the method limited by the invention is adopted to be used for coarse positioning and tracking of the container lockhole, the lockhole position can be quickly recognized and tracked, so that a car driver can adjust the position of the lifting device at any time, the complete lockhole image can be accurately reserved, and the defects of interference lights and interference points in the environment, poor Hough line effect and the like are solved.

Description

technical field [0001] The invention belongs to the field of computer vision technology and image processing technology, and in particular relates to a rough positioning and tracking method for a lockhole of a container. Background technique [0002] Since my country's accession to the WTO, the volume of export trade has grown rapidly. As an international common mode of transportation, the demand for container transportation has shown a sharp upward trend, and international trade has gradually entered the era of containers. Container transportation of goods has the advantages of low cost, high safety, fast transportation, and easy management, so it has been widely used in international trade. In today's transportation trade, due to the rapid development of product packaging materials and technology, most commodities have almost begun to be transported in containers, and the proportion of containers in trade transportation has also been significantly increased. With the deve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G01B11/00
CPCG01B11/00G06F18/2411
Inventor 高飞李定谢尔令狐乾锦童伟圆汪韬卢书芳肖刚
Owner ZHEJIANG UNIV OF TECH
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