A Method for Measuring Fabric Pore Characteristics by Image Method

An image method and fabric technology, applied in image analysis, image data processing, measurement devices, etc., can solve the problems of slow testing process, no pore identification, and inability to carry out a large number of tests.

CN103471973BActive Publication Date: 2016-04-06DONGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-04-06

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Abstract

The invention relates to a method for determining the porosity characteristics of a fabric through an image method, and in particular relates to a method for determining the porosity characteristics of a latticed sparse fabric through an image method. The method comprises the following steps of converting a gray image into a binary image according to a gray histogram two-peak method threshold of a fabric image, setting the pixel of a yarn region in a binary matrix corresponding to the binary image as 1, respectively projecting the binary matrix in the warp yarn direction and the weft yarn direction, analyzing the central line positions of warp yarns and weft yarns, and cutting off an image region out of the central line positions of side yarns to obtain a new image; identifying the porosity of the fabric in the new binary image, and retaining a true porosity region in the fabric by virtue of pseudo porosity elimination in a main yarn area and an area filtration method; performing statistic analysis on the porosity of the fabric to obtain the characteristics, such as actual porosity, non-uniform porosity and porosity size distribution, of the fabric. By the adoption of the method, a porosity characteristic index can be objectively, accurately and quickly calculated.
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Description

technical field

[0001] The invention relates to a method for measuring the pore characteristics of a fabric by an image method, in particular to a method for measuring the pore characteristics of a grid-like sparse fabric by an image method. Background technique

[0002] The traditional method of fabric theoretical porosity is calculated by measuring the warp and weft density and the diameter of warp and weft yarns. The measurement of warp and weft density usually uses a cloth mirror to manually measure the number of yarns within 10 cm. When counting yarns, if half a yarn The line time is rounded to an integer according to the situation. The measurement of the yarn diameter in the fabric is generally to remove the yarn from the fabric, measure the gram weight per unit length and then convert it into the yarn diameter. Or directly measure the diameter of the yarn in a magnifying instrument, which is troublesome and time-consuming. Therefore, it is necessary to seek reliable...

Examples

Embodiment Construction

[0062] The present invention will be further described below in combination with specific embodiments. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0063] A method for measuring the pore characteristics of fabrics by an image method of the present invention uses an image processing method to analyze and process fabric images to identify true pore areas, and counts the area, position, and rectangularity of each pore area to obtain fabric pore feature indicators , are respectively the CV value of the pore area, the actual porosity of the fabric, the average rectangula...