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Method, system and computer storage medium for detecting concave envelope in image outer contour

A detection method and an outer contour technology, applied in the field of image processing

Active Publication Date: 2020-11-20
TSINGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem of spraying trajectory planning for concave images, the present invention provides a detection method, system and computer-readable storage medium for the concave envelope in the outer contour of the image. The detection method has the characteristics of high precision and strong robustness, and can Effectively realize the detection of the concave envelope in the outer contour of the image

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  • Method, system and computer storage medium for detecting concave envelope in image outer contour
  • Method, system and computer storage medium for detecting concave envelope in image outer contour
  • Method, system and computer storage medium for detecting concave envelope in image outer contour

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Embodiment Construction

[0051] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0052] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0053] The first aspect of the present invention provides a detection method 100 for a concave envelope in the outer contour of an image, such as figure 1 shown, including the fo...

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Abstract

A method for detect concave envelope in image outer contour, system and compute storage medium thereof. The detection method comprises the following steps: sampling pixel points on the outer contour of an etching image, connecting the sampling points to form a line segment, and obtaining an intersecting contour after expanding and intersecting with the outer contour of an input image; Then, the intersecting contours are grouped and the positions are corrected, the start and end positions of each section of the contours are connected to form a closed region, the area of the closed region is calculated, and the closed region whose area is larger than a certain threshold value is found, so that the contours corresponding to the closed region are the concave envelope of the image; At last, that concave region of the concave envelope of the input image is close and filled. The method has the characteristics of high precision and strong robustness, and can effectively realize the detection and filling of concave envelope in the image contour.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a detection method, system and computer storage medium of a concave envelope in the outer contour of an image. Background technique [0002] Spraying robot is an important coating production equipment, mainly used for metal and non-metal surface coating work, and is the product of the organic combination of robot technology and surface coating technology. The spraying robot is not only safe and environmentally friendly, but also can complete the spraying task with high efficiency and high quality. [0003] The spraying trajectory of the spraying robot determines the spraying quality and efficiency of the workpiece. Before automatically planning the spraying trajectory of the target object, it is necessary to collect image information of the target object through sensors such as cameras or light curtains. Due to the wide variety of target objects, there are many concave...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/13G06T7/136G06T7/187G06T7/64
CPCG06T7/13G06T7/136G06T7/187G06T7/64G06T2207/10004
Inventor 肖曦王伟华
Owner TSINGHUA UNIV