Flexible object tactile modeling and expressing method applied to mobile terminal

Abstract

The invention discloses a flexible object tactile modeling and expressing method applied to a mobile terminal. The method is characterized in that the change of a contact area between a human finger end and a touch screen is obtained in real time on the mobile terminal by utilizing a contact area detection function of the mobile terminal, then the magnitude of finger press force is calculated according to pre-marked relation between the press force and the contact area and is used for calculating tactile response and virtual flexible object deformation, then contact force is fed back to a user in virtue of a certain tactile reproduction device, and meanwhile a deformation effect is displayed on the mobile terminal. The method has the advantages that 1, the problem that traditionally, in case of touch screen-based tactile reproduction, only tangential displacement is detected, and normal direction relative displacement cannot be directly detected is solved; 2, based on a principle that acting force and counter-acting force are balanced, the accurate calculation of virtual contact force is realized; 3, by considering object hardness and the magnitude of the finger active press force, deformation rendering and touch interaction with sense of reality are realized.

Description

technical field [0001] The invention belongs to the field of haptic modeling, and in particular relates to a haptic modeling and expression method for flexible objects applied to mobile terminals. Background technique [0002] With the continuous promotion of mobile terminals such as smart phones, tablet computers and other portable devices, people's life is increasingly inseparable from mobile terminals, but the functions of its human-computer interaction interface are currently mainly focused on visual and auditory interactions, and the Haptic functionality is limited. The organic combination of force haptics and mobile terminal products can allow operators to touch and perceive virtual objects, creating a sense of immersion, thereby bringing users a more realistic experience. Therefore, the visual / tactile modeling method for mobile terminals has become a research hotspot in the field of haptic modeling. [0003] At present, the haptic modeling of flexible objects for mo...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: use the contact area between the fingertip and the mobile terminal screen to calculate the size of the active pressing force, and then calculate the tactile response of the flexible object and the surface deformation of the virtual object, so as to give people a more realistic tactile experience

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