324 results about "Wide-angle lens" patented technology

The invention discloses a computer vision structure deformation monitoring system combined with laser scanning. The system comprises a laser scanning module, a computer vision module, an image processing module, a data fusion module, a data analysis and processing module, a communication module and a power supply module. The laser scanning module adopts a pulse type laser scanner to scan the surface of the rock-soil structure; the computer vision module adopts a wide-angle lens to obtain a two-dimensional image sequence of the rock-soil structure; the image processing module processes the two-dimensional image sequence to obtain two-dimensional displacement information of the feature points; the data fusion module fuses the point cloud data and the image feature point displacement information; and the data analysis and processing module analyzes the fused model, models historical deformation data, and predicts a future deformation trend. The system has the advantages of high precision, real-time performance, intelligence and strong anti-interference capability, can effectively guarantee the safe and stable operation of the power tunnel, and is of great significance to the construction, operation and maintenance of geotechnical engineering of the power tunnel.

A real-time badminton action detection system, consisting of: a video recording module configured to continuously record video images at a frame rate of at least thirty frames per second; a pose estimation processing unit configured to detect and output two-dimensional skeletal landmark coordinates for a variety of body joints, including at least wrists, elbows, shoulders, hips, knees and ankles, from each video frame; a Motion Bidirectional Encoder Representation Transformer (Motion-BERT) configured to receive sequential skeleton landmark coordinates over a defined time window and encode motion trajectories using multi-head self-attention mechanisms across past and future frames; and a classification controller module operationally coupled to the Motion-BERT, wherein the classification controller module comprises a dense neural network with a softmax output layer configured to generate real-time probability distributions over a variety of badminton-specific action classes, the end-to-end system being configured to produce recognition results with a processing latency of less than 100 milliseconds; and wherein the video recording module comprises a high-speed digital camera with a wide-angle lens positioned at a point on the perimeter of the court, the camera being calibrated with intrinsic and extrinsic parameters for perspective correction, and wherein the system includes a calibration routine that aligns detected skeletal landmarks with a reference badminton court coordinate system.

The invention discloses large-dip-angle license plate recognition and berth management equipment. The equipment is composed of four functional modules including a license plate recognition module, a berth management module, a data processing module and an environment adaptation module. The license plate recognition module adopts a wide-angle lens and a high-resolution camera to support large-range shooting of vehicle photos. The berth management module monitors the occupation state of berths in real time through a geomagnetic sensor and a camera. And the data processing module integrates the license plate recognition result and the berth state data. And the environment adaptation module performs corresponding parameter adjustment according to different deployment environments. The intelligent and high-efficiency parking lot management system is created by integrating multiple innovative technologies such as large-dip-angle license plate recognition, flow-saving parking space detection and routing inspection, full-process optimization from vehicle entering recognition and parking space accurate management to equipment operation and maintenance guarantee is achieved, the parking lot operation management level and user experience are greatly improved, and the parking lot management efficiency is improved. Wide application prospects and popularization values are realized.

The invention relates to the technical field of spacecraft on-orbit health monitoring, and discloses a cross-modal data fusion method and system for spacecraft appearance damage detection, and the method comprises the steps: obtaining two-dimensional image data and three-dimensional point cloud data of an outer surface damage region of a spacecraft; performing wide-angle lens distortion correction on the two-dimensional image data to obtain preprocessed two-dimensional image data, and performing denoising and filtering processing on the three-dimensional point cloud data to obtain preprocessed three-dimensional point cloud data; and on the basis of an external parameter matrix between the camera and the laser radar, constructing and performing cross-modal alignment and splicing on the preprocessed two-dimensional image data and the preprocessed three-dimensional point cloud data according to a mapping relationship between pixels and the point cloud to obtain cross-modal fusion data for spacecraft appearance damage detection. According to the method, the limitation of a traditional single data source in spacecraft appearance damage detection can be effectively overcome, and high-reliability multi-dimensional data support is provided for accurate detection and state evaluation of spacecraft outer surface damage.

The invention discloses a target tracking shooting method and device and a storage medium, relates to the technical field of multi-axis pan-tilt cameras, is applied to a pan-tilt control system, and comprises the following steps: if a target tracking process is triggered, selecting a target tracking source according to a priority and target detection result confidence corresponding to each tracking source, the target tracking source is a mobile terminal video source, a telephoto lens video source or a wide-angle lens video source; the position of a tracking object output by a target tracking process corresponding to the target tracking source is read, and the position of the tracking object is the position of the tracking object in a video picture corresponding to the target tracking source; and determining a pose adjustment parameter of the multi-axis holder according to the position of the tracking object, and controlling the multi-axis holder to rotate based on the pose adjustment parameter, thereby solving the technical problem of tracking interruption caused by incapability of effectively switching alternative sources when single tracking source detection is unreliable in the prior art, and improving the tracking precision and the tracking stability.

A target object tracking method, a camera, and a computer-readable storage medium are provided. The camera includes a telephoto lens and a wide-angle lens. The camera captures a telephoto image by the telephoto lens, and captures a wide-angle image by the wide-angle lens. When a target object is detected in the wide-angle image, a first zoom magnification of the wide-angle image and a zoom magnification of switching lenses are obtained. The wide-angle image is digitally zoomed according to the first zoom magnification if the first zoom magnification is less than or equal to the zoom magnification of switching lenses. Otherwise, if the first zoom magnification is greater than the zoom magnification of switching lenses, the telephoto image is digitally zoomed to output a tracking image of the target object when the target object is detected in the telephoto image.

The invention relates to the technical field of sign language intelligent communication, in particular to a deaf-mute sign language translation pronunciation system which comprises a data acquisition and preprocessing module, a sign language model recognition module, a dynamic gesture model module and a voice conversion module. According to the sign language translation pronunciation system for the deaf-mute, wide-angle camera intelligent glasses are adopted for visual collection, wearable equipment is not needed, video streams and thermodynamic diagrams are combined, visual information and key point probability distribution are complementary, the influence of single-mode noise is reduced, video space-time features are extracted through a 3D CNN, long-range dependence is captured in combination with a self-attention mechanism of Transform, and therefore the sign language translation pronunciation system for the deaf-mute is obtained. The sign language recognition precision is improved, an internal reference matrix and a distortion coefficient are calculated through a calibration board, wide-angle lens distortion is corrected, it is ensured that hand key points are accurately positioned, YOLOv8 is adopted to segment an interference object, background noise is prevented from affecting recognition, 21 key point thermodynamic diagrams are generated through MediaPipe, fault tolerance of low-confidence-coefficient key points is enhanced through Gaussian kernel diffusion, and the recognition accuracy is improved. And the model identification precision is improved.

The invention discloses a three-dimensional geometric reconstruction camera calibration method and system, and relates to the technical field of three-dimensional geometric reconstruction, and the method comprises the steps: S1, image collection; s2, automatic calibration point selection; s3, estimating camera parameters; s4, distortion correction is carried out; and S5, performing three-dimensional reconstruction verification. According to the three-dimensional geometric reconstruction camera calibration method and system, a calibration point does not need to be selected manually, the calibration process is simplified, the complexity and time cost of the calibration process are reduced, a high-precision calibration result can be obtained without shooting a plurality of plane images and carrying out a plurality of optimization iterations, and the calibration efficiency is improved. The calculation amount and the time cost are further reduced, and camera calibration can be quickly and accurately realized; in addition, nonlinear distortion of a camera lens is fully considered, the calibration precision is further improved, and the method is particularly suitable for the situation that a wide-angle lens is used or an image contains large distortion.

An optical imaging lens adapted to limited working distance is disclosed. The optical imaging lens includes a first, a second, a third, a fourth, a fifth, a sixth lens elements and an image sensing element sequentially along an optical axis from an object-side to an image-side. The first to the sixth lens element each includes an object-side surface facing toward an object-side as well as an image-side surface facing toward an image-side. The first lens element is a wide-angle lens element. The second to the sixth lens element are a combination of aspherical lens element, molded glass lens element, and free-form surface lens element. A field of view of the optical imaging lens is greater than or equal to 100 degrees, and the optical imaging lens is a wide-angle lens.

A wide-angle lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The first lens has refractive power, and the first lens is a meniscus lens. The second lens has refractive power, and the second lens is a meniscus lens. The third lens has positive refractive power. The fourth lens has positive refractive power. The fifth lens has negative refractive power. The sixth lens has refractive power. The seventh lens has refractive power and comprises a convex surface facing the image side. The eighth lens has refractive power and comprises a convex surface facing the object side. The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens are sequentially arranged from the object side to the image side along the optical axis.

Embodiments of the present disclosure generally relate to an optical system having a lens system configured to have a wide field of view and high resolution. The optical system includes three or more lens groups with ability to combat optical aberrations and produce a pupil outside of the lens group. The lens system as an image projection system projects a pattern or image rendered on a flat reticle or display of finite distance to the infinity. In an imaging system, the lens system collects light from infinity and forms an image of that object on a sensor.

The disclosure provides a wide-angle lens, a camera module and a camera. The wide-angle lens sequentially includes a first group, a stop, a second group, a third group and a filter. The first group sequentially includes a first lens with a negative refractive power, a second lens with a negative refractive power, and a third lens with a refractive power. The first lens is a meniscus lens. The second lens has a concave image side surface. The second group sequentially includes a fourth lens with a positive refractive power and a fifth lens with a positive refractive power, an image side surface of the fourth lens and an image side surface of the fifth lens are both convex. The third group sequentially includes a cemented doublet and an eighth lens. The eighth lens is a bi-convex lens.

To provide a wide-angle lens unit, camera module, image-capturing system and moving body that can reduce intensity of a ring ghost.SOLUTION: A second lens L2 in which a lens surface peripheral part directing toward an object side is a concave curved surface is arranged on an image side of a first lens L1 in which a lens surface directing toward the image side is a concave curved surface, and a multilayer film is formed on the concave curved surface of the second lens L2, and a film thickness Ti of the multilayer film is designed by a following (1) expression. Ti=T0i*1 / cos(sin-1((sin θ2)*N0 / Ni)) ...(1), However, 35°≤θ2<60°, Ti is the film thickness of an i-th (i is a natural number) layer of the multilayer film, T0i is a design film thickness of an i-th layer of the multilayer film, θ2 is an incidence angle when ghost intensity of an optical system as a whole is minimum, N0 is a refractive index of a medium, and Ni is the refractive index of the i-th layer.SELECTED DRAWING: Figure 17

The invention relates to the technical field of ultra-wide-angle lenses, and discloses an ultra-wide-angle lens optical axis detection calibration method, which comprises the following steps: firstly, selecting a standard wide-angle lens and an image, establishing a camera coordinate system and an image coordinate system, obtaining an image a, obtaining an image b by using a to-be-detected wide-angle lens, comparing the image a with the image b, and calibrating the optical axis of the ultra-wide-angle lens. According to a conversion relation between a camera coordinate system and an image coordinate system, calculating an image edge correction coordinate corresponding to each detection edge point, determining an image correction range of the detection target, establishing a distortion model, according to a preset distortion algorithm of the distortion model, calculating to obtain a distortion coordinate of each image point after distortion, and correcting each distortion point on the distortion coordinate to the image correction coordinate position according to the distortion model, and adjusting lens distortion correction setting or other related parameters of the camera according to an image calibration result. According to the invention, the distortion image is calibrated by setting the coordinate system, so that the calibration of the optical axis is assisted, and the efficiency and the precision are higher.

An apparatus and method for calibration between wide angle-narrow angle lenses through a dual-ChArUco board is disclosed. A method of calibration between wide angle-narrow angle lenses through a dual-ChArUco board includes recognizing a first pattern through a wide-angle lens of a first sensor and recognizing a second pattern through a narrow-angle lens of a second sensor, storing the first pattern and the second pattern; and calibrating the stored first pattern and the stored second pattern.

The application discloses a two-axis holder, the connecting arm can rotate relative to the rotor end of the first motor to switch the holder between the storage state and the use state; the clamping part comprises a first clamping jaw and a second clamping jaw, when the holder is in the storage state, the clamping part faces the handheld part; when the holder is in the use state, the clamping part is located above the first motor, the connecting arm is inclined to the axis extension line of the first motor, so that the clamping part is located on the axis extension line of the first motor, the outer ring of the rotor end of the first motor and the connecting arm are provided with matched limiting structures to limit the relative rotation of the rotor end of the first motor and the connecting arm. The two-axis holder disclosed by the application can always balance the gravity center of the two-axis holder, a rotating mechanism is additionally arranged between the first motor and the connecting arm to meet the storage of the two-axis holder, the length after storage is only the length of the handheld part of the holder, and the problem of the motor blocking the wide-angle lens during shooting of the two-axis holder can be solved.

The invention provides a day and night confocal optical system and a camera module applying the same, the day and night confocal optical system is mainly composed of seven lenses, the object plane side of the first lens is a convex surface, the image plane side is a concave surface, the focal power of the first lens is negative, the object plane side of the second lens is a concave surface, the image plane side is a convex surface, the focal power of the second lens is negative, the object plane side of the third lens is a convex surface or a concave surface, and the object plane side of the fourth lens is a convex surface or a concave surface. The object plane side and the image plane side of the fourth lens are both convex surfaces and have positive focal power, the fifth lens has focal power, the sixth lens has focal power, the object plane side of the seventh lens is convex, the image plane side of the seventh lens is concave, the focal power of the seventh lens is positive, the number of the lenses is reasonable, the structure is simple, and the lens can be widely applied to the field of optical imaging. By reasonably distributing the focal power of the lenses, optimizing the aberration of the lens and improving the resolution performance, the wide-angle wide-angle lens has the advantages of large wide angle, large aperture, light weight and excellent resolution, so that the miniaturized wide-angle lens has higher competitiveness in the market.

The invention relates to the technical field of vehicle safety, and provides an intelligent electronic rearview mirror side backward visual safety method which comprises the steps that S101, whether a vehicle is in a lane changing mode or not is judged based on the current speed and the steering signal state of the vehicle; s102, outputting a corresponding control instruction according to a judgment result; s103, adjusting the magnification of a wide-angle lens of the intelligent electronic rearview mirror to adapt to the lane changing requirement; s104, generating a real-time enhanced side backward image based on the adjusted lens parameters, the scheme of the embodiment of the invention aims to enhance the safety and definition of the side backward view in the lane changing process of the vehicle, ensure that a driver can still have an optimal view angle under the conditions of different vehicle speeds and steering lamp signals, and improve the driving safety of the vehicle. Particularly, the problem of narrow short-distance view under complex conditions of high speed, low speed and the like is solved.

The invention belongs to the technical field of endoscopic examination, and discloses an automatic adjusting device for endoscopic examination, which comprises an endoscope main body module, an image acquisition and processing module, a surgical instrument identification module, an automatic focusing module, a visual angle automatic adjusting module, a central control module and an interaction module, the automation function of the system reduces the dependence on assistants, and the operating room resource allocation problem is obviously improved especially under the condition of complex operations or insufficient manpower. Operation images and endoscope adjustment data recorded by the system can be used for postoperative analysis and teaching, and important support is provided for medical training. And by reducing the operation time and the error risk, the system improves the intraoperative safety of the patient, and further promotes the development of the endoscopic operation. Through organic combination of a wide-angle lens, an artificial intelligence recognition algorithm, automatic focusing and a visual angle adjustment technology, an efficient and intelligent automatic solution is provided for endoscopic examination, and multiple key problems in the prior art are solved.

The embodiment of the utility model provides a wide-angle lens, a shooting device and a movable platform. The wide-angle lens comprises a first lens group with negative focal power, a reflection optical element and a second lens group with positive focal power which are sequentially arranged from an object side to an image side along an optical axis, the first lens group comprises at least two negative lenses, the second lens group comprises at least five lenses, and the wide-angle lens satisfies the following conditions: 14lt; tTL / flt; 17; 90 degree lt; omega; wherein TTL is the distance on the optical axis from the object side surface of the lens closest to the object side to the imaging surface when an infinite object is focused, f is the overall focal length of the wide-angle lens, and omega is the maximum angle of the incident light of the lens closest to the object side. According to the embodiment of the utility model, the occurrence risk of ghosting and glare can be reduced, the spherical aberration can be well corrected, the lens size miniaturization can be realized while a larger field angle is ensured, and the imaging quality can be improved.

A method of designing a wide-angle optical system having at least one free-form optical surface without rotational symmetry to create a custom 2D object-image mapping. The method is based on iteratively adjusting the shape of the at least one free-form optical 2D surface to have the desired precise 2D object-image mapping, and then adjusting the surface of the optical element to meet other desired optical specifications. The iterative method is applied until the desired 2D object-image mapping and other desired optical specifications are achieved.

The invention provides a home-based care intelligent medicine box which comprises a medicine box body, a box cover is hinged to the top of the medicine box body, a medicine storage grid is arranged in the medicine box body and provided with a damp-proof assembly, a control assembly is arranged at the bottom of the medicine box body, a loudspeaker is arranged on the outer side of the medicine box, a touch screen is arranged on the outer side of the box cover, and the touch screen is arranged on the outer side of the box cover. A wide-angle lens is arranged on the inner side of the box cover, and the moisture-proof assembly, the loudspeaker, the touch screen and the wide-angle lens are all connected with the control assembly; by arranging the moisture-proof assembly, the medicine can be prevented from being damped, the storage effect is achieved, the medicine remaining condition is collected through the wide-angle lens, intelligent reminding is conducted in combination with the preset dosage, it is ensured that the old can take medicine regularly and quantitatively, and the medicine taking effect is improved.

The embodiment of the invention relates to a target tracking method and system. The method comprises the following steps: acquiring a first image of a target object shot by a wide-angle lens; determining first position information of a target object in the first image; based on the first position information and a view position relation, whether a target object is located in the second view range or not is determined, a determination result is obtained, and the view position relation represents the position relation between the first view range and the second view range; under the condition that the determination result shows that the target object is located in the second visual field range, obtaining a second image of the target object shot by the telephoto lens; and performing target tracking on a target object based on the second image. Therefore, the accuracy of target tracking can be improved.

To simplify processing in imaging systems that use multiple wide-angle lens devices. [Solution] An imaging system comprising a first lens device and a second lens device, each having a half-angle of view exceeding 90° corresponding to the maximum image height when focused at infinity at the wide-angle end, and a first imaging device equipped with a first image sensor that receives the image formed by the first lens device, wherein the imaging areas of the first lens device and the second lens device overlap, and the first imaging device determines the imaging conditions of the first imaging device based on imaging information in the overlapping area.

The invention relates to the technical field of vehicle-mounted lenses, and discloses a vehicle-mounted aspheric wide-angle lens which is characterized in that a main lens assembly, a diaphragm and an auxiliary lens assembly are respectively arranged from an object plane to an image plane, the main lens assembly comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens, the auxiliary lens assembly comprises a sixth lens and a seventh lens, the two ends of the first lens are plane mirrors, the inner side of the first lens is a biconvex lens, the inner side of the second lens is an inward-concave biconcave lens, the left side of the third lens is an outer convex lens, the two sides of the fourth lens are inward-concave biconcave lenses, and the right side of the fourth lens is an outer convex lens. According to the vehicle-mounted aspheric wide-angle lens, the diaphragm and the lens assembly cooperate, the diaphragm performs automatic dimming according to the light intensity, the exposure problem is avoided, the lens is made of ultra-low dispersion glass, the abbe number is larger than 55, dispersion is reduced, and the light transmittance is improved through an antireflection film.

The invention discloses a large-target-surface wide-angle TOF lens, and relates to the technical field of optical lenses, and the large-target-surface wide-angle TOF lens comprises a first lens group, a symmetric lens group and a second lens group. The first lens group comprises a plurality of meniscus lenses with negative focal power and convex object side surfaces, and the meniscus lenses are used for reducing incident light angles relative to the lenses; the symmetrical lens group comprises two meniscus lenses which are symmetrically arranged and have positive focal power, the object side surface of the meniscus lens close to the object plane in the symmetrical lens group is a concave surface, the image side surface of the meniscus lens close to the image plane in the symmetrical lens group is a convex surface, and the object side surface of the meniscus lens close to the image plane in the symmetrical lens group is a convex surface, and the image side surface of the meniscus lens close to the image plane in the symmetrical lens group is a concave surface; and the second lens group comprises a plurality of meniscus lenses with positive focal power and a biconvex lens with positive focal power, and is used for correcting aberration of emergent light beams of the symmetrical lens group. The lenses in the invention all adopt spherical lenses, so that high-quality imaging with large target surface and large visual angle can be realized, an aspherical mirror is not needed, and the lens cost is further greatly reduced.

The utility model provides a kind of monitoring adjustment switching device, first optical lens in first camera, second optical lens in second camera, third optical lens in third camera are all wide-angle lens, fourth optical lens in fourth camera is optical zoom lens, and the collection angle or collection mode of first optical lens, second optical lens, third optical lens, fourth optical lens is different;The lens switching control data output end of control unit is connected with the lens switching control data input end of switching unit, the image data output end of first camera, second camera, third camera, fourth camera is respectively connected with the image data input end of switching unit, the image data output end of switching unit is connected with the image data input end of control unit, can be flexibly switched between first camera, second camera, third camera, fourth camera, reduce monitoring use energy consumption cost.

[Problem] To provide a vision assistance device that does not cause misalignment between a virtual image projected onto a display surface and a real image viewed through the display surface. [Solution] A vision assistance device 100 is configured to project an image captured by a wide-angle camera device 108 onto a right display surface 106R or a left display surface 106L. When a wearer WP wears the vision assistance device 100 on the head HD and faces forward, a camera axis CCL of a wide-angle lens 172 is horizontally disposed. A camera center CC is disposed on a horizontal center line HCL and a vertical center line VCL of the left display surface 106L and the right display surface 106R. Consequently, no misalignment is produced between virtual images projected onto the left display surface 106L and the right display surface 106R and real images viewed therethrough.

The embodiment of the application discloses an image acquisition device, a terminal, a method and a storage medium for a video conference, and relates to the technical field of camera terminals. The device comprises: a wide-angle lens for acquiring a first field of view area; a plurality of telephoto lenses symmetrically arranged with respect to the center of the wide-angle lens, the optical axes of the plurality of telephoto lenses intersecting with the optical axis of the wide-angle lens at the same virtual optical center, and the absolute value of the difference between the second field of view area obtained by merging the field of view areas of the plurality of telephoto lenses and the first field of view area being less than a field of view area threshold. The image acquisition device of the embodiment of the application combines the wide-angle lens and the telephoto lens, can improve the field of view coverage rate, can also fuse the telephoto lens and the wide-angle lens to perform lossless magnification on the picture, avoids image distortion caused by different focusing information of different lenses based on the setting of the virtual optical center and the field of view area, and can fuse the telephoto lens to perform magnification close-up in most of the field of view area of the wide-angle lens.

Systems including dual-aperture zoom digital cameras with scanning optical path folding elements (OPFEs) for automotive or surveillance applications and methods for operating and using same. In some embodiments, a dual-aperture zoom digital camera comprises a Wide camera with a Wide field of view FOVW, a Wide sensor and a Wide lens, wherein the Wide camera is operative to output Wide image information, a Tele camera with a Tele field of view FOVT smaller than FOVW and with a Tele sensor, a Tele lens with a Tele lens optical axis and a scanning OPFE, and a processing unit operative to detect an object of interest (OOI) from Wide and / or Tele image information and to direct the Tele camera to move FOVT to acquire Tele image information on the OOI.