Human body neck circumference arc length obtaining method based on point-line-surface

Abstract

The invention discloses a human body neck circumference arc length obtaining method based on a point-line-surface, and the method comprises the following steps: 1) obtaining three-dimensional human body point cloud data, and obtaining a human body coronal plane and a human body sagittal plane in a three-dimensional space; and 2) confirming a boundary point: determining feature points of the neck circumference arc passing through the surface of the human body based on the point cloud data, and constructing a neck boundary triangle to obtain a front cervical vertebra point, a side cervical vertebra point and a rear seventh cervical vertebra point of the human body; and 3) obtaining a boundary line: drawing a human body neck circumference arc boundary line and an auxiliary line on the three-dimensional point cloud through the spatial position information of the point cloud coordinates; and 4) acquiring the length of the neck circumference arc, namely performing infinite differential on the section curve by inserting the feature points to obtain the corresponding length of the neck circumference arc. According to the neck circumference arc length obtaining method based on the point-line-surface infinite differential, the lines and the surfaces, a basis is provided for determining the collar circumference arc length in collar sample plate manufacturing, and therefore the garment collar sample plate with the high fitting degree with the neck of the human body is obtained.

Description

technical field [0001] The invention belongs to the field of clothing customization, and in particular relates to a point-line-plane-based method for obtaining the length of a human collar circumference arc. Background technique [0002] The collar is a relatively conspicuous position in clothing, which is both decorative and practical. And its decoration and practicality are based on human body data. In today's clothing customization field, personalization and high comfort have become the development trend of clothing. Since the collar model involves the length of the collar arc, the accuracy of obtaining the collar arc greatly affects the connection between the body and the collar, and directly affects the wearing comfort of the collar. Different from the need to measure data in the same cross-section such as chest circumference, waist circumference, hip circumference, etc. in the jacket model, FNP, SNP, and BNP exist in different cross-sections in the neckline of the hum...

AI Technical Summary

Problems solved by technology

But spline fitting involves matrix inversion, which makes the inversion more complicated as the number of fitting points increases

However, CN 106327536 A discloses a measurement method based on point clouds of cut planes. This method only considers the front and rear neck points, but does not take into account the position information of the side neck points, and the obtained neck circumference length is not accurate enough.

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