东北地区青年女性胸部形态分类与回归建模.

With the continuous increase of people' s requirements for the fit and comfort of clothing, the research on human shape characteristics and classification has become the focus of research in the field of clothing. The study of the shape characteristics of the breast is an important part of the research on human body shape and morphology of clothing field. The shape characteristics of female breasts have a significant impact on tops' fit. Therefore, it is of great significance to carry out research on the shape characteristics of female breasts in different regions and different age groups. In the existing research. there arc few studies on the breast shape of young females in Northeast China. Therefore, this paper takes young females in Northeast China as the research object to study and analyze the characteristics and classification of their breasts. In the research of clothing fit, the shape characteristics of the breasts under the state of wearing a bra are an important basis for coniaructing fit clothing and ready-to-wear design. In this paper. 328 young females aged 18 - 25 years old in Northeast China were randomly selected, and anthropometric measurements were performed using the VITUS 3D body scanner. Referring to GB/T 16160 - 2017 • Anthropometric Definitions and Methods for Garment'. 17 characteristic variables such as chest circumference, lower chestcircumference and chest width were extracted. And 311 valid experimental samples were finally determined through the data outlier test. Using principal component analysis. we obtained five principal component factors. namely: girth factor, distance factor, height factor, chest circumference difference factor and shape factor. Using the principal component factors as the classification indexes, four types of chest shape were obtained through K-means cluster analysis. Among them, females of the first type have a relatively uniform body shape and a flat chest shape. Females of the second type are thin, with plump. straight and gathered breasts. Females of the third type are slightly fat. with plump. gathered, and slightly sagging breasts. Women of the fourth type are relatively symmetrical in shape. and their breasts are plump. slightly expanded. and sagging. The proportions of the experimental samples of the four types of breast shapes were 21. 9%. 32. Ili. 26. 7%. and 19. 3%. respectively. According to the principal component factor analysis and the shape characteristics of human breasts. bust circumference and breast distance were selected as the independent variables. The stepwise regression method was used to commie' the regression models of various breast shape characteristic variables. The validity of the chest characteristic regression equations was verified by variance analysis and residual analysis. The verification results show that the chest regression models of each body type are ideal. The study found that among the five principal component factors, the girth factor and the distance factor have a greater impact on the shape of du chest. Through descriptive statistical analysis and comparison of 3D models, it is proved that the shape characteristics of the four chest types in the cluster are obvious. The for types of chest shape regression models established by stepwise regression analysis have obvious differences in structure. which further illustrates the difference between human body shape categories and breast shape. This paper studies the breast shape classification and regression modeling of young females in Northeast China under the cc edition of their wearing a bra. It provides reference for the research on breast shape and clothing fit of young females in this area. Due to the limited sample sin of the experiment. the accuracy of the chest shape classification and regression model in this study needs to be improved. and the results of the study still have certain limitations. The shape characteristics of the breasts of women wearing bras are the basis for the research on the structure and fit of the tops. Based on the research on chest shape. a parametric 3D model of the chest and human body and a digital avatar can be constructed in the future. At the same time, relevant research such as clothing fit structure design, clothing virtual design. and virtual fitting can be carried out. [ABSTRACT FROM AUTHOR]