4 results about "Displacement mapping" patented technology

The application discloses a kind of exposure platform calibration methods based on board, method includes: step S1, according to the mapping relationship of calibration plate grid and suction cup position obtains standard theoretical suction cup coordinate, to establish the mapping relationship of sensor coordinate and theoretical suction cup coordinate;Step S2, with the theoretical suction cup coordinate of calibration plate as reference extension establishes virtual suction cup grid to cover the exposure area of suction cup;Step S3, moves calibration plate to virtual suction cup grid cover the exposure area of suction cup, takes feature point and obtains the sensor coordinate P2 of feature point, obtains the suction cup coordinate P1 of feature point based on the sensor coordinate P2 of feature point by the mapping relationship of sensor coordinate and theoretical suction cup coordinate, establishes the displacement mapping relationship between feature point suction cup coordinate P1 and feature point initial suction cup coordinate after moving;Repeat step S3, until calibration plate moving path covers all regions of virtual suction cup grid.According to the method of the embodiment of the application, with the advantages such as adaptability and high precision, small implementation difficulty.

Described is a method for instilling the haptic dimension of texture to virtual and holographic objects using mid-air ultrasonic technology. A set of features is extracted from imported images using their associated displacement maps. Textural qualities such as the micro and macro roughness are then computed and fed to a haptic mapping function together with information about the dynamic motion of the user's hands during holographic touch. Mid-air haptic textures are then synthesized and projected onto the user's bare hands. Further, mid-air haptic technology enables tactile exploration of virtual objects in digital environments. When a user's prior and current expectations and rendered tactile texture differ, user immersion can break. A study aims at mitigating this by integrating user expectations into the rendering algorithm of mid-air haptic textures and establishes a relationship between visual and mid-air haptic roughness.

Provided in the embodiments of the present disclosure are a method and apparatus for interaction in a virtual reality scene, a device and a storage medium. The method comprises: receiving head control data acting in a virtual reality scene; determining a region of interest on the basis of the head control data and displaying the region of interest and a control point, the control point being initially located at the center point of the region of interest, and the region of interest comprising an object to be interacted with; receiving hand pose data generated in a hand operation area, a displacement mapping relationship being present between the hand operation area and the region of interest; moving the control point to a target display position, the target display position being a mapping position of the hand pose data in the region of interest; and responding to an interaction operation generated when the control point acts on said object.