40 results about "Head position" patented technology

The invention relates to a long-gap discharge leader development speed measurement method based on radiated electromagnetic wave detection. The method comprises a set of high-frequency antennas and a high-speed oscilloscope and a long-gap discharge leader development speed calculating method. The method adopts a certain antenna arrangement form; long-gap discharge radiated electromagnetic wave pulse time is detected simultaneously through the plurality of antennas; leader head position is positioned according to time difference of a signal arriving at different antennas; and furthermore, the long-gap discharge leader development speed can be calculated. The method can effectively improve the measurement precision of the discharge leader development speed, and resolution reaches the level of 0.1 ns.

The invention discloses a self-adaptive control method for a sound field of an in-vehicle sound box based on a head position, and the main design concept of the self-adaptive control method lies in that the dynamic optimization of the sound field in the vehicle is carried out by tracking the obvious change of the head position caused by the change of the sitting posture of a driver and passengers in real time, so as to adjust the output effect of a loudspeaker in the vehicle in a self-adaptive manner. Specifically, on the basis of real-time detection of the head position of a person in a vehicle, a control strategy is calculated according to a dynamic sound field: time delay is compensated to solve the time difference problem of sound wave propagation, and the dynamic accuracy of sound image positioning is ensured; through a gain compensation mode, sound pressure level differences of loudspeakers in a vehicle with dynamic different distances relative to the head of a user are balanced, and frequency response flatness is maintained; and through phase correction, phase interference generated by spatial position difference caused by head position change is eliminated, and sound field coherence is optimized. According to the invention, the follow-up adaptation effect of the person in the vehicle and the sound field in the vehicle is realized, and the acoustic quality in the vehicle is obviously improved.

The invention belongs to the technical field of medical instruments, and discloses a neurosurgery head frame capable of achieving image recognition and position adjustment and a using method, and the neurosurgery head frame comprises a supporting base, a head supporting ring and a plurality of fixing head nail suites; the top end of a vertical plate of the supporting base is provided with an arc-shaped groove sliding way which is arranged in an inwards-concave mode, a plurality of fixing head nail sets are detachably installed on one side face of the head supporting ring in the circumferential direction of the head supporting ring and can abut against and make contact with the head of a patient to fix the head, and the head supporting ring is installed on the arc-shaped groove sliding way in a sliding mode. The head supporting ring and the arc-shaped groove slide way are locked through a locking screw, the rotation angle of the head supporting ring in the arc-shaped groove slide way can be adjusted by unscrewing the locking screw, and then the head position rotation angle of the head is adjusted. The supporting base and the head supporting ring are provided with a plurality of identification point positions. The head frame can provide fixation of different head positions required by an operation, is suitable for various different head neurosurgery operations, and can quickly recognize the change of the head position through an image.

1. The name of the design product: the main body of the head limiter for sports training. 2. The use of the design product: the overall use of the product: the design product is a wearable sports training equipment and a sports performance improvement device. Specifically, it is a head positioning device for basketball and other sports training, which limits head movement in a physical way to prevent athletes from lowering their heads when dribbling. Local use of the product: main body of the head limiter. 3. The design points of the design product: the shape of the local part to be protected. 4. The picture or photo that best indicates the design points: perspective view.

A method for assessing hearing abilities of a human person having two cars, the method comprising: —providing two audio signals (S1, S2) to two respective car speakers (15, 16) at a person's corresponding cars; —measuring at least one value of at least one parameter (x15, y15, z15, x16, y16, z16) representative of the person's head position, adapting at least one of the two audio signals (S1, S2) based on the at least one measured value ((x15, y15, z15, x16, y16, z16), and repeating the measuring and adapting often enough for the sounds provided to the person to correspond to their actual head position; —detecting that the person has found their best perception of the two sounds; —calculating from the person's head position corresponding to the best perception an overall sensitivity value, a differential sensitivity value and / or a value of a latency shift of the person.

Provided is an analysis system for analyzing the function of a semicircular canal under rotational stimulation, which includes a vestibular ocular reflex data acquisition element for acquiring first vestibular ocular reflex data obtained by dividing a rotational angle amount of a vestibular ocular reflex by a head position rotational angle amount, and second vestibular ocular reflex data obtained by dividing a residual rotational angle amount obtained by subtracting, from the head position rotational angle amount, a rotational angle amount based on a compensatory saccade (CUS), and analyzing the function of a semicircular canal based on the second vestibular ocular reflex data, or the first vestibular ocular reflex data and the second vestibular ocular reflex data.

1. The name of the design product: neck pillow (butterfly wings). 2. The use of the design product: the design product is used to fit the neck curve and provide support when sleeping or resting, relieve the pressure on the cervical spine by fixing the head position, and thus improve the quality of sleep. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

A method for using a mobile device and a mobile device for determining a person's viewpoint are provided. The method includes: determining the head position and pupil position of the person while they are looking at a target; and determining the viewpoint based on a surrogate of at least the eye portion of the person's head, the surrogate being set to the determined head and pupil positions. The method further includes generating the surrogate from the mobile device.

The invention discloses a method for judging jaw malformation based on facial soft tissue feature points, which comprises the following steps of: automatically positioning key feature points in a side face optical image by using a pre-trained neural network model, establishing a coordinate system, correcting the deviation of a head posture in the image, and pre-diagnosing the jaw malformation condition; in the model training stage, a face optical image and an X-ray image which are paired are used, common feature points are extracted to register soft tissue and a bony structure, a deep neural network is used for learning the space mapping relation of the face optical image and the X-ray image, a coordinate system error introduced by an optical photo posture is calculated, and a head position normalization neural network model is formed; in the application, only a single face optical image is input to the model, the pre-training model can automatically identify the feature points, posture calibration and space standardization are completed, and automatic classification and auxiliary diagnosis results of jaw malformation are output according to the posture calibration and the space standardization.

The present disclosure provides a method and a system for estimating the 3D head position of a driver in a vehicle. The method includes capturing an image of the driver and identifying an area of ​​interest focused on the driver's head within the image. Furthermore, a virtual camera perspective is created by generating a cropped image centered on the head position. The true coordinates of the head in the original image are then transformed to align with the perspective of the virtual camera. This alignment ensures that the coordinates in the virtual camera perspective accurately correspond to the driver's head position. Finally, a pre-trained estimation model is applied to the transformed, cropped image to determine the 3D position of the driver's head, enabling accurate, real-time monitoring of the driver's orientation and position.The method improves the accuracy of the estimation by standardizing head positioning in relation to the camera viewpoint, which is a basic requirement for driver assistance and safety systems.

A head tracking system (HTS) 200 and head worn assembly determines a user’s head position and / or orientation. The HTS comprises optical sensor(s) and inertial sensor(s) producing optical 210 and ine

Provided in the present disclosure are a driving state detection method and apparatus, an electronic device, and a readable storage medium. The method comprises: acquiring an image to be subjected to detection that includes the head of a driver; detecting a head image of the driver from the image to be subjected to detection, and on the basis of the head image, determining a head pose of the driver; detecting a facial region of the driver from the image to be subjected to detection; determining the number of occluded eye feature points and an eye image from the facial region; on the basis of the number of occluded eye feature points, determining whether the eye image can be used for gaze direction estimation; when the eye image can be used for gaze direction estimation, inputting the eye image into a gaze direction estimation model to determine a gaze direction of the driver; on the basis of the gaze direction, head position information and a head rotation angle of the driver, and position information of each region in a vehicle, determining a gaze region of the driver; and on the basis of the head rotation angle and the gaze region, determining a driving state of the driver. By means of the method, the accuracy of detecting a distracted state is improved.

The application relates to the technical field of eye movement instruments, and discloses an autism eye movement track recognition instrument, which comprises an instrument base plate, a playing device is fixedly installed at one end of the instrument base plate, a head limiting mechanism is rotationally assembled at the other end of the instrument base plate, the playing device is used for playing materials, and an eye movement tracking camera for collecting the eye picture of a patient when the patient watches the materials is hiddenly installed on the playing device. The autism eye movement track recognition instrument limits the head position of the patient through the swingable head limiting mechanism, the swing of the head of the patient can reduce the uncomfortable feeling, the eye movement tracking camera is driven to move synchronously through a power transmission assembly, the eyes of the patient can be kept facing the camera during the test process, the eyes of the patient are prevented from deviating from the shooting range of the camera, and the eye movement tracking camera is prevented from moving and lagging behind when the head of the patient swings, so that the shooting of the eyes is not delayed, and the accuracy of collecting the eye movement track of the patient is ensured.

The utility model relates to the field of pillows, in particular to a pressure sensing prone position operation face pillow which comprises a computer board, a face pillow body and a plurality of pressure sensors, the face pillow body is elastic, and a first receding groove and a second receding groove which are concave in the thickness direction of the face pillow body are formed in the middle of the face pillow body. The length direction of the first avoiding groove is parallel to the width direction of the face pillow, and the length direction of the second avoiding groove is parallel to the length direction of the face pillow; when the head of the patient lies on the face pillow, the first avoiding groove is used for avoiding the eyes, and the second avoiding groove is used for avoiding the mouth and the nose; the multiple pressure sensors are arranged in the face pillow at intervals, and the pressure sensors are in signal connection with the computer board. The pressure on the face of a patient can be monitored, so that medical staff can conveniently adjust the head position of the patient.

The invention discloses a double-person interactive gazing behavior recognition and mode conversion positioning method, which comprises the following steps of: 1, specifying the head positions of to-be-detected double target persons in an input video, and respectively acquiring a gazing point heat distribution map, a gazing direction vector and a drop point label sequence through a gazing point heat map generator; and step 2, using a deep feature extractor of a cross attention mechanism, and fusing related information to extract gaze behavior features. 3, designing a multi-scale gaze mode recognizer, extracting gaze behavior feature relevance on multiple time scales, and obtaining a gaze behavior recognition result after decoding; 4, designing a mode conversion locator, learning inter-frame difference characteristics, and obtaining the probability of a conversion point at each moment; and a fifth step of constructing a loss function in combination with double tasks of double-person watching behavior recognition and mode conversion positioning, and completing training of the constructed deep learning network. According to the method, through multi-scale time sequence feature fusion and a double-task joint training strategy, excellent performance is shown in double-person watching behavior recognition and mode conversion positioning tasks.

The invention relates to the technical field of precision surgery, in particular to a head position intelligent recognition and closed-loop correction system which comprises a data acquisition module, a decision module, a correction execution module and a control and man-machine interaction module. And the data acquisition module fuses optical positioning, inertial measurement and face point cloud data, and outputs a high-precision head pose by adopting an error state Kalman filtering algorithm. And the decision module establishes a multi-dimensional risk assessment model, calculates a weighted risk index and performs hierarchical decision based on a nonlinear threshold. And the correction execution module maps the decision signal into multi-mode collaborative feedback such as augmented reality vision, spatial audio, gradient touch and automatic bed body posture compensation. The problems of limitation of a single sensor and passive monitoring are solved, stable and intelligent closed-loop control of the head position in the operation is achieved, and the safety and accuracy of the operation are remarkably improved.

1. The name of the design product: barbed drain cover (part). 2. The use of the design product: The overall use of the design is: for window door waterproof and windproof strip drainage strip; The partial use of the design is: for the head position of window door waterproof and windproof strip drainage strip. 3. The design points of the design product: the shape of the barbed drain cover head. 4. The picture or photo that best indicates the design points: perspective view. 5. Other circumstances that need to be explained: This product is an indefinite length product, which extends indefinitely on the upper and lower sides of each design front view.

This utility model discloses an ironing device with switchable head posture, belonging to the field of garment ironing technology. Existing handheld ironing devices require two hands to operate when changing working postures. This utility model addresses this by configuring an angle limiting structure between the head and the handle. This angle limiting structure restricts the head's rotation between a first position and a second position. An elastic force is also applied to the head to hold it in the first or second position. During the latter part of the head's rotation in one direction between the first and second positions, this elastic force assists the head in rotating to the first or second position. To change the head posture, the handle can be grasped, and the head can be pressed against an external object such as clothing or an ironing board to apply external force. This external force generates torque on the head, causing it to rotate and, with the help of the elastic force, rotate into and maintain the corresponding position. Therefore, only one hand is needed to switch the head posture, improving convenience.

The application relates to a mixed reality office scene bad sitting posture correction method and device, equipment and medium, which are suitable for a mixed reality head-mounted device. The method continuously acquires current spatial posture information of a user's head and shoulders, calculates head position offset, left shoulder position offset, right shoulder position offset and head angle offset based on the current spatial posture information and a reference posture model, and judges whether the user is in an abnormal posture state according to each offset and a corresponding threshold value. When the abnormal posture state lasts for more than a preset time length, the mixed reality head-mounted device is controlled to visually modulate display content to prompt the user to adjust the posture. The application can improve the accuracy of bad sitting posture recognition and reduce the interference on the user's office process.

The application provides a system and method for predicting the amount of bone expansion of maxillary expansion based on digital images, which comprises a CBCT image acquisition device, an image correction module, an image measurement module, a data analysis module and a data output module. The CBCT image acquisition device acquires a CBCT image in a natural head position and a bite position of a dental cusp staggered position. The image correction module corrects the head position and obtains a palatal cross-sectional view. The image measurement module measures the depth IDP of the palatine bone pyramid protrusion embedded in the sphenoid ala notch of the pterygopalatine fissure on the palatal cross-section. The data analysis module determines the embedding shape type of the pterygopalatine fissure according to the IDP value. The data output module outputs whether the predicted amount of bone expansion is sufficient according to the type of the pterygopalatine fissure. The system and method can predict the expansion treatment effect of the population with insufficient transverse development of the maxilla by predicting the amount of bone expansion, especially the effect of the micro-implant assisted rapid expansion of the maxilla.

This utility model discloses a head positioning device, including a forehead support device, a chin support device, and a positioning housing. The forehead support device is disposed above the positioning housing, and the chin support device is disposed below the positioning housing. The forehead support device has several forehead support members for supporting the forehead. The chin support device has a top support position for supporting the chin. When a facial photograph needs to be captured, the subject's chin rests on the top support position, and then the forehead rests on the forehead support members, thus keeping the entire head in a relatively static state for a short period of time, facilitating facial image acquisition by the facial imaging device. This utility model achieves stable head positioning using only the top support position and forehead support members. Compared with previous head positioning devices, this utility model is more user-friendly and can achieve better head positioning.

The present disclosure provides a system and method for capturing facial nerve movement data. The system comprises: a head stabilization apparatus, a focusing and lighting apparatus, a specified camera, and a seat. The seat is arranged below the head stabilization apparatus, cooperates with the head stabilization apparatus, and is configured to provide a seat for a patient suffering from facial paralysis. The specified camera is arranged directly in front of the seat and faces the seat. The focusing and lighting apparatus is symmetrically arranged on the left and right sides of the specified camera and faces the seat. The head stabilization apparatus is configured to provide support for a head position of said patient and calibrate the head position of said patient when the patient sits on the seat. The focusing and lighting apparatus is configured to adjust a photographing environment for said patient to a photographing environment that meets a target photographing requirement. The specified camera is cooperates with the focusing and lighting apparatus and is configured to record a facial nerve movement image of said patient when calibration of the head position of the patient and the photographing environment is completed.

A headrest which is designed to at least partially surround a head. The headrest has a device for noise suppression, which is arranged on a side of the headrest (facing toward a head position.

1. Name of the product in this design: Head of sealing strip (1 partial view). 2. Purpose of this design: The overall purpose of the design is for dustproofing, noise reduction, and rainproofing of door and window gaps; the partial purpose of the design is for the head position of door and window sealing strips. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. Other situations requiring explanation: This product is of variable length and extends to varying lengths on the top and bottom sides of each main design view.

A virtual reality interaction method includes: collecting body posture information of a user in a real environment by using a posture tracking device, where the posture tracking device includes a motion detection unit provided corresponding to a position of a target skeletal muscle, and the motion detection unit is configured to determine a joint motion angle of a corresponding joint; collecting first position information of the user's head in the real environment by using a laser radar component, and collecting head posture information of the user's head in the real environment by using an inertial measurement unit component; and configuring the body posture information, the head position information, and the head posture information as full-body posture information of the user, and mapping a virtual object corresponding to the user in a virtual reality environment according to full-body posture information.

Eyes of an occupant in a vehicle are trained by recording a head position and / or an eye movement of the occupant, displaying lines and / or dots are displayed on a display unit, asking the occupant to track a course of the lines by head movement or by eye movement, and outputting feedback on a respectively recorded head position and / or eye movement of the occupant.

The invention discloses an oral cavity CT shooting device for oral medicine. The oral cavity CT shooting device comprises an automatic regulation and control assembly, a rotation regulation mechanism, a CT supporting table, a CT scanner and a CT base. The invention belongs to the technical field of oral cavity CT. The time for adjusting the head of a patient can be set through the arrangement of the delay trigger switch, a circuit is closed after timing is finished, the position of the head of the patient is stabilized through calibration laser on the CT scanner and by rotating the adjusting plate and the elastic positioning plate, and CT shooting in the next step can be conveniently carried out; according to the scheme, the technical scheme of manually guiding the patient to calibrate the head position in the prior art is abandoned, and the technical scheme of dynamically adjusting the head position of the patient and delaying stopping is provided, so that a standardized head position calibration operation process can be provided for the oral CT shooting device; and a head position calibration scheme convenient to adjust and automatic experience are provided.

Motor vehicle (20) comprising a hands-free device (22), a sound reproduction system (24), a driver observation camera (26) and a computing device (28), wherein the driver observation camera (26) is designed and configured to continuously detect the head position and / or head posture of an occupant (30) of the motor vehicle (20) and to transmit information (32) in this regard to the computing device (28), wherein the computing device (28) is designed and configured to determine the head position and / or head posture from the transmitted information (32) in order to transmit an electronic signal (34) to the sound reproduction system (24), wherein the sound reproduction system (24) is designed and configured to adapt to the head position and / or head posture.

A balance function management system includes at least one processor, and a memory that stores instructions executable by the processor and stores at least one artificial neural network model executed on a computing device, in which the at least one processor may input frame images of n videos of a subject captured by n (natural number) cameras to at least one artificial neural network model to acquire at least one of information related to head coordinates, coordinates of a pupil center, and eye phase changes of the subject according to an order of frame images of an m-th (natural number from 1 to n) video, and use the information to generate information on a balance function status or information related to head movement and eye movement for performing a balance function rehabilitation program.