The present invention discloses a user interface design and evaluation system and a hand interaction based user interface design and evaluation system.;According to the present invention, the user interface design and evaluation system includes a user interface design unit, a human model interaction design unit, a user interface prototype simulation unit, a human model simulation unit, and a user interface evaluation unit. In order to develop an interface considering usability, we propose a usability feedback feedback system that performs optimization of interface design based on the simulation of the motion of body model and user interface model.;This induces an optimal interface design, lowering the user's initial barrier to entry to the new interface, making it easier to use, and improving the user's performance. In the new product development phase, it also supports fast prototyping and evaluation to proactively cope with efficient production of products with short life-cycles.
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