Method and device for determining growth threshold of point cloud area of ship body complicated outside plate

A technology of region growing and determining methods, which is applied in image data processing, instruments, calculations, etc., can solve problems such as insufficiency, achieve fast reasoning speed, reduce the number of solving times, and speed up the solving speed

Active Publication Date: 2017-06-13
GUANGDONG UNIV OF TECH
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  • Abstract
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Problems solved by technology

[0005] The embodiment of the present invention provides a method and device for determining the threshold value of point cloud region growth of complex outer plate of hull, which solves the lack of a point cloud region growth of complex outer plate of hull that has fast inference speed, good generalization ability and accurate inference results. Technical issues with threshold determination methods

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  • Method and device for determining growth threshold of point cloud area of ship body complicated outside plate
  • Method and device for determining growth threshold of point cloud area of ship body complicated outside plate
  • Method and device for determining growth threshold of point cloud area of ship body complicated outside plate

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Embodiment Construction

[0048] The embodiment of the present invention provides a method and device for determining the growth threshold of the point cloud region of the complex outer plate of the hull, which is used to solve the lack of a point cloud region of the complex outer plate of the hull that has fast inference speed, good generalization ability, and accurate inference results. Technical aspects of the growth threshold determination method.

[0049] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art...

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Abstract

An embodiment of the invention discloses a method and a device for determining a growth threshold of a point cloud area of a ship body complicated outside plate. The invention is used for settling a technical problem of no method for determining the growth threshold of the point cloud area of the ship body complicated outside plate, wherein the method has advantages of high inference speed, high generalization capability and high inference result accuracy. The method provided by the embodiment of the invention comprises the steps of extracting a gray scale of point cloud area data of the ship body complicated outside plate; calculating occurrence probability of each gray scale grade, and dividing the point cloud area data into background area data and target area data according to the occurrence probability of each gray scale grade; calculating a maximal solution which satisfies an interclass variance between the background area data and the target area data through a sliding window method, and using the maximal solution as the growth threshold of the point cloud area of the ship body complicated outside plate.

Description

technical field [0001] The invention relates to the field of ship shell plate processing, in particular to a method and device for determining the growth threshold of point cloud regions of complex shell plates. Background technique [0002] Water and fire bending is a complex hull forming process commonly used by shipyards at home and abroad. The process technology is difficult, there are many influencing factors, and the operation skills are difficult. In order to get rid of this situation and realize the accurate extraction of the point cloud data of the outer panel in the process, in the process of realizing the accurate extraction of the point cloud target, a point cloud is needed. The cloud data area growth threshold determination calculation method is used to improve the accuracy of extracting the target area from the point cloud data. [0003] Among them, for the determination of the growth threshold of the point cloud region of the complex outer plate of the hull, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/11G06T7/136G06T7/187
CPCG06T2207/10028G06T2207/20076
Inventor 程良伦关凤伟徐金雄吴磊林锦发
Owner GUANGDONG UNIV OF TECH
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