Spinneret plate special-shaped hole size detection method

A technology for size detection and special-shaped holes, which is applied in the field of image processing and can solve the problems of poor versatility in the detection of spinneret hole size accuracy.

Pending Publication Date: 2020-09-18
SHANGHAI UNIV OF ENG SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for detecting the size of spinneret specia

Method used

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  • Spinneret plate special-shaped hole size detection method
  • Spinneret plate special-shaped hole size detection method
  • Spinneret plate special-shaped hole size detection method

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Embodiment 1

[0078] In this embodiment, according to the processing design of the outer contour of the spinneret hole, it is mainly based on the combination of line segments and arcs, and adopts a generalized non-rigid parametric matching model based on the combination of line segments and arcs to automatically process any type of spinneret. Modeling and detection of special-shaped holes in the plate to realize the universality of detection of special-shaped holes, including: image extraction, contour analysis and feature extraction through standard special-shaped hole images to automatically generate a general matching model; and then by rotating the contour of the hole image to be detected Angle correction, as well as global and local connected area pre-registration and parameterized model nonlinear registration based on least squares, optimize the position of feature control points, and optimally register the model contour reconstructed by the non-rigid matching model to the test object ...

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Abstract

The invention provides a spinneret plate special-shaped hole size detection method. The spinneret plate special-shaped hole size detection method comprises the following steps: based on a line segmentand arc combination mechanism during spinneret plate hole silk outlet surface outer contour machining design, adopting universal non-rigid parametric matching model based on line segment and arc combination to carry out modeling and detection on any spinneret plate special-shaped hole, achieving the universality of special-shaped hole detection. The method comprises the steps: carrying out imageextraction, contour analysis and feature extraction through a standard special-shaped hole image, and automatically generating a universal matching model; correcting the rotation angle of the image contour of the to-be-detected hole; carrying out global and local connected region pre-registration and parameterized model non-linear registration based on least squares, and optimizing the positions of the feature control points, optimally registering the model contour reconstructed by the non-rigid matching model to the contour position of the hole to be measured, and solving the hole quality monitoring parameters according to a preset hole size feature parameter calculation method.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method for detecting the size of special-shaped holes in a spinneret. Background technique [0002] Chemical fiber is a thread formed by molten polyester polymer sprayed through a specific shape of the spinneret hole on the spinneret and then condensed and crystallized under high temperature and high pressure conditions. The shape and size of the spinneret hole determine the performance of the chemical fiber, and the spinneret is in After a certain period of use, it must be ultrasonically cleaned and dried before it can be used again. Spinning hole quality monitoring is an important stage to ensure the quality of spinning. The general detection is through manual contact measurement of the aperture and other dimensions through precision instruments, and then the dirt is checked and removed through a binocular microscope. Due to the large number of spinnerets, many fac...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T7/62G06T7/13G06T7/136G06T7/66G01B11/02G01B11/24
CPCG06T7/0004G06T7/62G06T7/13G06T7/136G06T7/66G01B11/02G01B11/2433G06T2207/10004G06T2207/30164
Inventor 徐增波
Owner SHANGHAI UNIV OF ENG SCI
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