7 results about "Hand surface" patented technology

This invention discloses a gesture recognition method, system, device, and medium, relating to the field of gesture recognition technology. The method includes: collecting hand surface point cloud data of various gestures from an individual sample; performing point cloud sparsification on the hand surface point cloud data to generate a variable-density hand surface point cloud; selecting different target points in the variable-density hand surface point cloud as center nodes, and constructing a local graph for each node using the nodes closest to the center node as neighbor nodes; obtaining the changing features of the connection relationship between nodes and edges in the local graph by changing the geometric features of the hand; extracting local features at different scales using edge convolution; stitching together the local features extracted at different scales to obtain a multi-scale local feature representation; and recognizing the gesture of the individual sample based on the local feature representation. This method accurately distinguishes subtle differences in complex gestures, improving the accuracy and robustness of gesture recognition.

The utility model discloses a double-edge composite-edge milling cutter, which relates to the field of milling cutters and comprises a left-handed surface, a right-handed surface, a left-handed surface and a right-handed surface, the right-handed rotation surface is arranged on the outer ring of the cutter and is adjacent to the left-handed rotation surface; when the cutter is used for machining a plate, firstly, after the left-handed surface is in contact with the face of the plate and a groove is formed through machining, the left-handed surface is in contact with the bottom of the groove body, so that the bottom of the groove body is not prone to burr, the right-handed surface is in contact with the inner wall and the end of the groove body, and the inner wall and the end of the groove body are not prone to burr; and the processing quality of the plate is improved.

An system for augmenting images using hand surface normal estimation is provided. In a model training phase, 3D models of hands are generated using 3D data of hands in a variety of positions. Target normal training data is generated that includes normals of surfaces of the 3D models and synthetic 2D image training data corresponding to the 3D models and the normals. The target normal training data and the synthetic image training data are used to train a normal estimation model. The normal estimation is used by an interactive application to generate augmentations that are applied to hand image data.

This invention discloses a hand movement estimation system and method based on spectrum gating and attention mechanisms. The system synchronously acquires electromyographic signals of the hand surface and hand joint angle data through a multimodal data acquisition module. A data preprocessing module preprocesses the raw data to construct a standard dataset. The hand fine movement estimation module adopts a hybrid coding architecture, first using a spectrum gating unit to extract time-frequency features related to fine movements from the signals, and then combining this with an attention mechanism for global temporal modeling, thereby outputting predicted joint angle values. The hand posture reconstruction module drives a virtual model based on the predicted joint angles to reconstruct the hand fine movements. This invention effectively solves the problem of neglecting frequency domain features in existing technologies by fusing frequency domain dynamic filtering and global temporal capture capabilities, improving the accuracy and robustness of continuous estimation of hand fine movements. It can be widely applied in scenarios such as dexterity hand control, rehabilitation training, and human-computer interaction.

The invention discloses a bidirectional jet plasma hand disinfection method, and relates to the technical field of hand disinfection. According to the invention, the two plasma generators are arranged at the air outlet and are close to the natural placement position of the hand, and close-range opposite jet flow is formed in the hand accommodating groove through the two fans, so that the active particles with short service life directly act on the hand surface and finger seam areas without attenuation; the defects that a discharge area of an existing device is far away from the hand, and active species are difficult to fully utilize are overcome, so that the disinfection efficiency is remarkably improved. Meanwhile, the working process is divided into three stages of pre-purging, plasma disinfection and hand drying, and the treatment time, the atomization particle size, the atomization medium ratio, the discharge power and other parameters of different stages are cooperatively matched in the rapid disinfection mode, the deep disinfection mode and the child disinfection mode; therefore, same-grade inactivation is realized at lower power or in shorter time, and the stability and comfort of the sterilization effect are improved.

A water spraying head is fixedly installed at the front end of a water gun body, a control switch is fixedly installed on the outer side of the front end of the water spraying head, a wearing device is fixedly installed on the outer side of the middle of the water gun body, and the wearing device comprises a connecting ring, a connecting soft plate, a first connecting belt, a second connecting belt and a lighting device. The middle of the water gun body is fixedly sleeved with the connecting ring, the bottom end of the connecting ring is fixedly connected with the top end of the connecting soft plate, the front end and the rear end of the connecting soft plate are fixedly connected with one end of a first connecting belt and one end of a second connecting belt respectively, and the other end of the first connecting belt is connected with the other end of the second connecting belt through a hook-and-loop fastener. The connecting ring and the lighting device are fixedly connected through a telescopic assembly. By means of the wearing device, the phenomena of hand face abrasion and arm fatigue can be avoided, meanwhile, the situation that the body is unbalanced due to impact force caused by water pressure can be avoided, and illumination can be provided in the dark through the illumination device.

Various illustrative handheld surface cleaners and methods of using handheld surface cleaners are provided. In an exemplary embodiment, the handheld surface cleaner is configured to draw debris into the handheld surface cleaner using a suction force. The suction also causes air to be drawn into the handheld surface cleaner. The hand-held surface cleaner is configured to separate debris and air on the hand-held surface cleaner to allow air to exit the hand-held surface cleaner and allow debris to be collected in the hand-held surface cleaner for later disposal.