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Polygonal work piece detecting and positioning method

A positioning method and workpiece detection technology, which is applied in the field of image processing, can solve problems such as long calculation time, and achieve the effect of fast detection speed, high speed and improved robustness

Active Publication Date: 2014-09-24
INST OF AUTOMATION CHINESE ACAD OF SCI
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  • Summary
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  • Description
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  • Application Information

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Problems solved by technology

However, such methods usually take a long time to calculate, so they are only suitable for relatively simple polygon detection such as triangles, and even such methods can only be used to detect regular polygons

Method used

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  • Polygonal work piece detecting and positioning method
  • Polygonal work piece detecting and positioning method
  • Polygonal work piece detecting and positioning method

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Embodiment Construction

[0050] Embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, in conjunction with detailed implementation methods and specific operating procedures, but the scope of protection of the present invention is not limited to the following Example.

[0051] figure 1 It shows a flow chart of a method for detecting and locating a polygonal workpiece proposed by the present invention. Such as figure 1 As shown, the method first extracts the straight line segment in the image, then searches the polygon from the image, and finally calculates the coordinates of the polygon in the image polar coordinate system according to the perspective projection equation and the internal geometric relationship of the polygon. Specifically, it includes the following steps:

[0052] Step 1: Detect straight line segments in the image. These include...

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Abstract

The invention comprises a polygonal work piece detecting and positioning method which comprises the following steps: Step 1, an edge image in a work piece image is detected, the curve set composed of curves in the edge image is acquired, and a line segment set is extracted from the curve set; Step 2, for each line segment of the line segment set, an edge forming a certain included angle with the line segment and nearest to the endpoint of the line segment is searched as the adjacent edge of the line segment, all the line segments serving as adjacent edges to each other are extracted, and a graph formed by the line segments is a polygon; and Step 3, the polygon is positioned at six degree of freedom. The polygonal work piece detecting and positioning method provided by the invention can be applied to video surveillance, intelligent transportation, video retrieval, robot navigation, human-computer interaction, military and many other fields. In addition, the method provides six-degree-of-freedom positioning of spatial planar polygons, and can be applied to industrial capture, assembly, butt joint and other fields.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to a method for detecting and locating a polygonal workpiece based on a link model. Background technique [0002] Visual information is one of the main sources for human beings to obtain information from the objective world. With the continuous development of computer technology, the use of computers to realize human visual functions has attracted many researchers. Space plane polygon detection is one of the hot issues in the field of computer vision, and has been widely used in many fields such as video surveillance, intelligent transportation, video retrieval, robot navigation, human-computer interaction and military affairs. [0003] In an industrial environment, there exists a certain class of objects, which consist of one or more planes, which in turn consist of polygons. Objects in this category include semiconductor integrated circuits, mobile phones, bo...

Claims

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Application Information

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IPC IPC(8): G06T7/00
Inventor 覃政科王鹏乔红孙佳
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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