Method for obtaining skin deformation based on subdivision model expansion

Abstract

The invention discloses a method for obtaining skin deformation based on subdivision model expansion. The method comprises the following steps: pasting mark points on key parts on the surface of a human body; obtaining human body lower limb point cloud data; human body point cloud data of all actions (including standing) are processed, complete human body models are obtained, contour line editing is carried out on all the models along mark points, then curved surface processing is carried out, the processed dynamic and static models are imported into three-dimensional modeling software UG NX at the same time to be flattened, and comparison is carried out. The human body model is curved and then expanded for comparison, the operation is simple, the method is rapid and accurate, the skin deformation rule of each part of the human body can be clearly and intuitively expressed, and the working efficiency is improved; the method is combined with a method for calculating the skin deformation by measuring the physical properties such as the size length and the area of the human body model, so that the acquisition of the skin deformation rule is more scientific and perfect, and a foundation is laid for the scientific setting of the dynamic looseness in the clothing plate making process.

Description

technical field [0001] The invention belongs to the technical field of skin deformation amplitude research on clothing ergonomics, in particular to a method for obtaining skin deformation based on subdivision model expansion. Background technique [0002] The structural design of clothing is jointly determined by the static body shape of the human body and the dynamic changes of the human body. The changes of the body surface skin during exercise have a significant impact on the loose design and functional design of the clothing, which in turn affects the comfort of the human body when wearing the clothing, and even hinders the free movement of the human body. [0003] Skin deformation is the theoretical basis for designing the structure of sports functional clothing. At present, skin stretch measurement methods are divided into contact measurement and non-contact measurement. Contact measurement methods include unstretched line method, plaster tape method, body surface trac...

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Problems solved by technology

Among them, the unstretched line method cannot measure the negative contraction of the skin; the model obtained by the plaster tape method is relatively easy to preserve, but the operation process is cumbersome and the waiting time is too long

Manual measurement of body surface line, manual measurement of body surface sticking line, and optical motion tracking method can only obtain the elongation in a certain direction. In terms of cost and operation difficulty, the rubbing method is less difficult than the plaster method, but it still takes a certain amount of time

The above methods are time-consuming, and the operation is difficult, and the expression is not intuitive

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