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172 results about "Visual angle" patented technology
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The visual angle is the angle a viewed object subtends at the eye, usually stated in degrees of arc. It also is called the object's angular size. The diagram on the right shows an observer's eye looking at a frontal extent (the vertical arrow) that has a linear size S, located in the distance D from point O. For present purposes, point O can represent the eye's nodal points at about the center of the lens, and also represent the center of the eye's entrance pupil that is only a few millimeters in front of the lens.
Aluminum plastic package detection method and system based on machine vision
The embodiment of the invention discloses an aluminum plastic package detection method and system based on machine vision, and the method comprises the steps: carrying out the noise reduction processing of a single-visual-angle detection image of an aluminum plastic package, obtaining a noise reduction detection image, extracting an abnormal feature region, and obtaining an initial detection result; establishing a semantic association rule of a pre-trained semantic rule mapping model and the quality detection demand label of the aluminum plastic package; a synchronous quality control instruction in the production link of the aluminum plastic package is used as a semantic adaptation trigger condition, and an adjustment strategy of a semantic weight distribution unit is calibrated and activated; inputting the initial detection result into a semantic rule mapping model to perform semantic dimension priority ranking on abnormal features in the initial detection result to obtain an abnormal feature ranking result; and in combination with the defect judgment model and a defect grading rule in a current production scene corresponding to the production link, performing matching judgment on the abnormal feature sorting result, and outputting a defect judgment conclusion adaptive to the current production scene.
Owner:HENGHE PHARMA GUIZHOU
Dynamic semantic vision SLAM (Simultaneous Localization and Mapping) method based on point and line feature adaptive weighting
The invention discloses a dynamic semantic vision SLAM (Simultaneous Localization and Mapping) method based on point and line feature adaptive weighting. The method comprises the following steps: firstly, obtaining potential dynamic region prior by combining target detection and image segmentation; then adaptive weighting is carried out on point and line features in two stages: in the first stage, initial weighting is carried out based on motion consistency check and dynamic levels, and feature matching and pose preliminary estimation are realized; in the second stage, weighting is further carried out on the key frame level through multi-view consistency verification, and weighted optimization and map maintenance are combined; and finally, loopback verification and global optimization are completed based on weighted features, and cumulative drift is effectively eliminated. According to the method, interference of dynamic and low-credibility features is suppressed through differential feature weighting, the adaptability to an intermittent moving object is improved through a double-stage weighting mechanism, and the stability and observability of a low-texture scene are enhanced through point-line combined modeling.
Owner:SUZHOU UNIV
Whole vehicle virtual cabin automatic test method and system based on digital twinning
The invention discloses a method and a system for automatically testing a virtual cabin of a whole vehicle based on digital twinning, and relates to the technical field of vehicle testing, a three-dimensional working condition space containing an eye point coordinate set and a polarization angle set is constructed by simulating the height and head micro motion of a driver, and a head-up display image in the three-dimensional working condition space is acquired through a camera; constructing a correction coordinate system and a gray brightness mapping table by combining a standard calibration board, and converting the image into a physical brightness matrix; marking elements in the physical brightness matrix through a brightness threshold value, extracting two parallel straight lines of a main track and a ghosting track through Hough transform and ODR sub-pixel refitting, and calculating a visual angle difference and a ghosting brightness ratio; and generating a test result table containing the three-dimensional working condition index based on a double-threshold joint judgment rule. The system comprises an image acquisition module, a feature extraction module, a data calculation module and a test judgment module, realizes automatic and accurate quantitative automatic test based on the system, and improves the virtual cabin test efficiency and reliability.
Owner:WUHU HONGJING ELECTRONICS
Intelligent cooperative control system and method for vestibular function inspection
The invention discloses an intelligent cooperative control system and method for vestibular function inspection. The invention discloses an intelligent cooperative control system and method for vestibular function examination, and belongs to the technical field of medical instruments. The system comprises a cold and hot air perfusion module, a dynamic visual target module, a head posture detection module, a sight distance detection module, an eye movement acquisition module, a voice interaction module, an adjustable examination chair and a central controller. The central controller realizes closed-loop control based on multi-source sensing data: during a cold and hot test, if the elevation angle of the head deviates from 30 degrees + / -2 degrees, stimulation is paused and voice prompt is performed; during visual target testing, visual target parameters are automatically compensated according to the actually measured sight distance of 1.5 m + / -0.1 m so as to maintain a constant visual angle, and the upright state (90 degrees + / -2 degrees) of the head is verified; abnormities such as eye closing more than or equal to 2 seconds or head movement more than or equal to 5 degrees per second are monitored in the whole process, graded voice intervention is implemented, and the abnormities are paused. Body position conversion is guided by voice, multi-source data are synchronously stored, and peripheral and central function correlation analysis is supported. According to the invention, the accuracy and compliance of inspection can be improved.
Owner:XIAN HONGYI TECHNOLOGY CO LTD
Honey pomelo granulation nondestructive testing method based on X-ray and two-dimensional fruit shape feature fusion
The invention belongs to the technical field of fruit quality detection, and particularly discloses a honey pomelo granulation nondestructive detection method based on X-ray and two-dimensional fruit shape feature fusion, and the method comprises the following steps: obtaining two-dimensional fruit shape features of honey pomelo based on an X-ray image sequence and an RGB image sequence of the honey pomelo, the X-ray image sequence is obtained by shooting an X-ray image of the honey pomelo in a rotating mode, and the RGB image sequence is obtained by shooting a surround video of the honey pomelo at a horizontal view angle; inputting the X-ray image sequence and the two-dimensional fruit shape features to a honey pomelo granulation detection model, and obtaining a granulation degree category output by the honey pomelo granulation detection model; wherein the honey pomelo granulation detection model is used for predicting the granulation degree category of the honey pomelo based on the X-ray image sequence and the two-dimensional fruit shape features. According to the method, the granulation degree of the honey pomelo can be efficiently and accurately detected under the condition that the honey pomelo is not damaged.
Owner:HUAZHONG AGRI UNIV
Evaporator-over-refrigerator display case
The utility model discloses a refrigerator display cabinet of evaporimeter upper placement, including the cabinet, the tray frame of setting in the inner chamber of cabinet and the supporting leg of setting in the bottom four corners of cabinet, the inside upper end of cabinet is provided with the evaporimeter, the bottom and left and right two ends of evaporimeter all are provided with the air outlet, the side of cabinet is provided with the auxiliary frame, the vertical swing joint of auxiliary frame has the lifting link, the bottom of lifting link is provided with the universal wheel, the upper end of auxiliary frame is provided with the drive assembly for driving the lifting of lifting link, this refrigerator display cabinet of evaporimeter upper placement, will evaporimeter remove to the food top of cabinet, and its air inlet and outlet are located above, effectively prevent the health hidden danger of food residue falling into and polluting the evaporimeter, significantly improve the cleaning convenience and health grade of equipment, simultaneously, the cabinet bottom case structure can be thinned, makes the display food can be placed in the lower position, optimizes the customer visual angle, strengthens the product display effect.
Owner:ZHEJIANG HEMA COMMERCIAL EQUIP CO LTD
Speech emotion recognition method based on multi-mode multi-view pseudo tag fusion
InactiveCN121687123ASpeech analysisCharacter and pattern recognitionFace detectionSupervised learning
The invention discloses a speech emotion recognition method based on multi-modal multi-view pseudo-tag fusion, and relates to the technical field of emotion recognition, and the method comprises the steps: firstly, constructing a visual-view pseudo-tag generation module, extracting high-quality facial expression features from a video through employing an optimized OfficientNet-V2 network and a RetinaFace face detector, and carrying out the recognition of the high-quality facial expression features; generating a visual pseudo label through time sequence aggregation; secondly, adopting a semi-supervised learning framework FixMatch to generate a reliable voice pseudo tag for the non-tag voice; secondly, fusing emotional knowledge from multiple visual angles and modes of vision and voice based on a pseudo-tag fusion function, and generating a more accurate and robust fused pseudo-tag; and finally, training a voice emotion recognition model based on a Conformer encoder to perform voice emotion recognition by combining the fused pseudo label data with the labeled voice data. According to the method, the problem of error accumulation in traditional semi-supervised learning is effectively solved, cross-modal emotion complementarity is utilized, and the accuracy and generalization ability of speech emotion recognition are remarkably improved.
Owner:ZHEJIANG IND & TRADE VOCATIONAL & TECH COLLEGE (ZHEJIANG IND & TRADE TECHNICIAN COLLEGE)
Powder box with angle-adjustable lens
The utility model discloses a powder box with an angle-adjustable lens. The powder box comprises a box bottom, a box cover, a lens seat and the lens, the lens seat and the box cover are connected in a rotating fit mode through a shaft column and a shaft seat, the lens seat is arranged in the lens seat installation groove in a rotating mode, the shaft column is regularly arranged on the back face of the lens seat, the shaft seat is regularly arranged in the lens seat installation groove, and the shaft column and the shaft seat are matched with each other, clamped into a shaft column clamping groove of the shaft seat and connected with the shaft column clamping groove in a rotating mode. The shaft column or the shaft ball is arranged on the back face of the lens seat, the shaft seat is regularly arranged on the inner side of the box cover, the lens seat is matched with the shaft seat through the shaft column or the shaft ball to rotate, and the visual angle of the lens is adjusted through the lens seat. Compared with a traditional powder box, the powder box is simple in structure and convenient to assemble. Meanwhile, after the box cover of the powder box is opened and fixed, the visual angle of the lens can be further adjusted through the lens seat, and more lens visual angles are provided for consumers.
Owner:SHANGHAI JIASHIKE PACKAGING TECH CO LTD
Novel separated vehicle-mounted display screen framework
The utility model relates to the technical field of vehicle-mounted display screens, in particular to a novel separated vehicle-mounted display screen framework which is characterized in that a sliding groove and a limiting groove are formed in a mounting plate; an electric push rod and a connecting rod are arranged on the connecting plate; an electric telescopic rod pushes a limiting block to be in sliding fit with a connecting rod and a moving rod along a limiting groove, so that a connecting plate can rotate along a rotating shaft on the connecting rod, the angle of the display panel is changed by changing the included angle between the connecting plate and a mounting plate, and the visual angle of the display panel is increased; a worker pulls a pull rod to enable a sliding block to slide along a through groove, a clamping block fixedly connected to the sliding block slides along the through groove and is separated from a clamping groove, the installation plate and the display panel can be detached from the vehicle-mounted host, maintenance personnel can carry out maintenance work on the vehicle-mounted host, and the maintenance efficiency of the vehicle-mounted host is improved. And the whole vehicle-mounted host does not need to be disassembled, so that the maintenance cost and the maintenance time are reduced, and the practicability is high.
Owner:NANJING XINGDINGSHENG ELECTRICAL CO LTD
Sea surface target tracking method based on visual guidance radar under high sea condition
ActiveCN121955973ACharacter and pattern recognitionRadio wave reradiation/reflectionPoint cloudRadar
The invention discloses a sea surface target tracking method based on a visual guidance radar under a high sea condition. The method comprises the following steps: synchronously collecting millimeter wave radar point cloud, image, positioning, direction and speed data when an unmanned ship sails; detecting an image target by using a YOLOv8 model subjected to slideloss weighted training and model distillation optimization to obtain a target detection frame; preprocessing the radar point cloud; point cloud proposal and classification are carried out based on an image detection frame, clustering clusters are generated through DBSCAN clustering, and visual angle information is fused in proposal clusters; and the clustering cluster is converted to a world coordinate system, dual matching with a historical target is realized through a Hungary algorithm, the unmatched target is initialized, and the state of the matched target is updated by using extended Kalman filtering and the future position is predicted. According to the method, a close-range sensing blind area is filled, the precision and stability of sea surface target tracking under the high sea condition are remarkably improved, and reliable guarantee is provided for safe navigation of the unmanned ship.
Owner:ORCA-TECH
A building crack detection method based on image recognition
The application discloses a kind of building crack detection methods based on image recognition, it is related to visual detection technical field, including, extract the component boundary in building component detection drawing, and carry out line segment alignment and illumination decoration, form exhibition surface base map and component line network;The central axis of slender dark pattern in exhibition surface base map is extracted, end extension and spatial configuration coding are carried out, and the structure line graph, end extension area graph and structure line configuration identification graph are obtained;Call component line network, end extension area graph and structure line configuration identification graph complete the visual angle intersection check of crack structure line graph and pseudo-crack elimination, obtain real crack line set;Along real crack line set carry out bilateral edge band search, fuzzy section connection and bifurcation section separation, and determine crack boundary corresponding relationship in combination with structure line configuration identification graph, obtain crack entity graph.The application carries out visual angle intersection check and pseudo-crack elimination, improves the distinguishing ability of real crack and decorative press line, grid joint, water mark stain.
Owner:深圳市永基建筑工程检验有限公司
Display method of video, display device, storage medium, and television
The embodiment of the application discloses a video display method, a display device, a storage medium and a television. The video display method comprises the following steps: acquiring a target 3D signal, wherein the target 3D signal comprises a left eye frame and a right eye frame; controlling a 3D glasses to cyclically open a left eye lens and a right eye lens; when the left eye frame in the target 3D signal is displayed on a display screen, the 3D glasses is controlled to open the left eye lens; when the right eye frame in the target 3D signal is displayed on the display screen, the 3D glasses is controlled to open the right eye lens; and the opening frequency of the left eye lens and the opening frequency of the right eye lens are equal to half of the current refresh rate of the display screen. On the one hand, the television has a higher refresh rate, supports a larger size display, has a larger visual angle, and thus the 3D visual experience of a user can be improved; on the other hand, a user only needs to wear 3D glasses to better experience the 3D stereoscopic display effect through the television without spending a high cost to purchase a VR hardware device.
Owner:HUIZHOU VISION NEW TECH CO LTD
Mirror with adjustable height
Owner:NINGBO HAOYI GLASS PRODUCTS CO LTD
Operation table for watch maintenance
The utility model relates to the field of clock maintenance equipment, in particular to an operating table for watch maintenance, which comprises a base, a self-locking electric push rod fixedly connected onto the base and used for adjusting the operating height of a device, a support block fixedly connected onto a telescopic rod of the electric push rod, and a fixed knob in threaded connection with the support block. The supporting block is rotatably connected with an operation platform, the fixed knob is used for fixing the use angle of the operation platform, the operation platform is fixedly connected with a fixed seat, the operation platform is fixedly connected with a guide rail, the guide rail is slidably connected with a movable seat, and the fixed seat is matched with the movable seat to fix the dial plate. Stepless height adjustment of the operation platform is achieved through the electric push rod, in combination with pitching angle adjustment of the operation platform, maintenance personnel keep a natural sitting posture, the included angle between the sight line and the dial plate is stabilized at the optimal ergonomic visual angle, the problem that a traditional fixing platform needs to frequently bend down and lower the head is solved, and the cervical vertebra and lumbar vertebra strain risk is reduced.
Owner:广诚钟表集团有限公司
Hysteroscope
The utility model discloses a hysteroscope. The hysteroscope comprises a handle, a camera lens and an insertion part, the tail end of the long strip section is connected with the handle in an assembled mode, the bent inclined section is bent out of the head end of the long strip section and obliquely extends in the direction away from the handle, the tip end is connected with the bent inclined section in an assembled mode, and the camera lens is assembled on the tip end. The pick-up lens is also obliquely arranged relative to the bent inclined section in the bending direction of the bent inclined section, so that the inclination angle of the pick-up lens relative to the long strip section is the sum of the inclination angle of the bent inclined section relative to the long strip section and the inclination angle of the pick-up lens relative to the bent inclined section; therefore, the hysteroscope provided by the utility model can realize a larger visual angle to meet more clinical requirements, and can also meet the operation and use of hard instruments at the same time.
Owner:WUXI AISHIYI MEDICAL TECH CO LTD
Teaching tool for eyeball surgery
ActiveCN224190580Uheight adjustableCosmonautic condition simulationsEducational modelsEyelidTeaching tool
The utility model discloses a teaching tool for eyeball surgery, which comprises a supporting column and an eyeball model, the front end of the supporting column is provided with a regulation and control auxiliary mechanism, the regulation and control auxiliary mechanism comprises a sliding rail fixedly connected to the front end of the supporting column, the outer side of the sliding rail is connected with a sliding frame in a sliding mode, one end of the sliding rail is provided with a limiting hole, and the other end of the sliding rail is connected with the eyeball model. And the front end of the sliding frame is fixedly connected with a mounting block. According to the teaching tool for the eyeball surgery, the threaded rod is rotated to move in the adjusting frame, so that the threaded rod drives the adjusting and controlling plate to move through the connecting block, the limiting block is separated from the limiting hole, the sliding frame is pulled to slide along the sliding rail, and the purpose of conveniently adjusting the height of an eyeball model is achieved; therefore, the eyeball model is adapted to different positions and is matched with the actual exposure height and the operation view angle of the eyeball in a real operation, and operation changes caused by differences of eye socket depth and eyelid tightness of a patient in clinic are restored.
Owner:WENZHOU MEDICAL UNIV
Head-up display method, device, apparatus, medium and product
PendingCN122110523Aimprove fluencyImprove driving safetyVehicle componentsOptical elementsComputer graphics (images)Engineering
The application discloses a head-up display method, device, equipment, medium and product, the method comprises the following steps: according to the layout position of the orthoview posture stereoscopic model of each instrument information, real-time rendering and projection into the imaging element of the carrier, when the posture of the carrier is deflected, the model rotation is carried out on each orthoview posture stereoscopic model according to the posture deflection parameter, each rotated stereoscopic model is obtained, the target expansion area of the visual angle field is determined in each rendering level, and the layout position of the rotated stereoscopic model corresponding to each new instrument information in the target expansion area is determined. According to the real-time position information of the eyeballs of the eyes of the detected carrier driver and the layout position of all rotated stereoscopic models, real-time rendering and projection into the imaging element of the carrier are carried out. The technical scheme can maximize the effective driving information, and improve the smoothness of human-computer interaction and driving safety.
Owner:NANJING CHIYUN INTELLIGENT TECHNOLOGY CO LTD
A construction progress monitoring device
The utility model provides a kind of construction progress monitoring device, including hard hat main part, four the monitoring seat of integral type is provided on the hard hat main part, and the socket of one of the monitoring seat is connected with shoulder strap power supply;The top of the hard hat main part is provided with wiring arc convex part, and wiring arc convex part is located between four the monitoring seat upper side;Hat brim is provided on the hard hat main part, and its inside buckle is equipped with hard hat inner support, and hard hat inner support is equipped with binding belt;The utility model is provided with inverted "L" type monitoring seat and camera around hard hat, covers 360 ° visual angle, avoids high-altitude falling object risk.Power supply box is connected with chest plate by shoulder strap and chest strap, disperses weight, reduces slip and oppression, and four-way distribution optimizes gravity center, forms double balance system.
Owner:ZHEJIANG ENERGY CONSTR CO LTD
Multidirectional positioning anti-falling linear laser zoom lens
The utility model relates to the technical field of lenses, in particular to a multidirectional positioning anti-drop linear laser zoom lens, which comprises an upper seat, the side wall of the upper seat is fixedly connected with a plurality of mounting blocks, the interior of the upper seat is rotatably connected with an annular plate, and the lower end of the annular plate is fixedly connected with a turntable; a movable block is slidably connected to the interior of the support, a shaft rod is rotatably connected to the side wall of the movable block, a rotating column is fixedly connected to the end of the shaft rod, a groove is formed in the end of the rotating column, a protruding block is slidably connected to the interior of the groove, a lens is fixedly connected to the end of the protruding block, and an electromagnet is fixedly connected to the inner wall of the groove. The electromagnet is matched with the protruding block. Through the synergistic effect of the motor, the electric push rod and the driving motor, flexible adjustment of the lens in the horizontal angle, the longitudinal angle and the vertical position is achieved, the diversified requirements for a laser light path or an imaging view angle in a complex scene are met, and the adaptability and compatibility of the system are remarkably improved.
Owner:SHAANXI SHUOWEI PHOTOELECTRIC TECH CO LTD
Double telecentric lens for industrial detection
ActiveCN224122834UResist adverse influencesshorten the lengthCamera body detailsOptical elementsTelecentric lensPrism
The utility model relates to a double telecentric lens for industrial detection, which comprises a lens cone, a lens, a lens box, prisms and cameras, the lens cone comprises an inner lens cone, an outer lens cone and a lens cone sealing ring, the lens is arranged in the lens cone, one end of the lens cone is provided with the lens box, two ends of the lens box are respectively provided with the lens cone, two ends of the lens box are respectively provided with the cameras, and the prisms are arranged in the lens box. The inner lens cone is installed inside the outer lens cone, the outer side of the inner lens cone is provided with a plurality of diversion trenches, the inner side of the outer lens cone is provided with a plurality of clamping blocks, and the clamping blocks are installed on the diversion trenches. The lens box and the prism adopted by the utility model can shoot and detect at the same time under two-end visual angles, and the length of the utility model is reduced.
Owner:SHENZHEN WATERLONG TECH CO LTD
Candle pop and aromatherapy device
The application relates to a candle pop. The candle pop comprises a shell, a wax base, a wick and a driving mechanism. The shell is provided with a containing cavity. The wax base is arranged in the containing cavity. The wick is arranged in the wax base and is used for burning the wax base. The wick has a burning section exposed outside the wax base and used for burning. The driving mechanism is arranged on the shell and drives the wax base to slide in the containing cavity, so that the distance between the free end of the burning section and the open mouth of the containing cavity and the wax base is within a set range. Thus, the position of the free end of the burning section in the containing cavity is basically kept constant, so that the position of the flame in the containing cavity is basically kept constant, that is, the height of the flame is basically kept unchanged. In the case that the height of the flame is basically kept unchanged, the user can observe the flame through a basically constant visual angle without frequently changing the visual angle to adapt to the flame with a great change in height. Thus, the flame generated by the burning section has a reasonable observation visual angle, so that the user experience is improved.
Owner:SHENZHEN FENYUE TECHNOLOGY CO LTD
A positioning method based on air-ground cross-view visual odometry
ActiveCN116753979BNavigational calculation instrumentsInternal combustion piston enginesEngineeringOdometer
The application discloses a positioning method based on ground-air cross visual angle visual odometer, and the positioning precision is judged by judging the mathematical features of the probability graph output by the ground-air visual angle positioning network, which is used as the condition for whether to fuse with the internal odometer, so that the inaccurate ground-air teaching positioning result can be removed, the positioning result with higher precision is fused with the internal odometer, and higher precision can be obtained; the ground panoramic image and the off-line acquired air visual angle image are matched and positioned, and the global positioning information can be provided under the condition that the GNSS signal is interfered; the ground-air cross visual angle positioning and the odometer fusion are used, the cumulative error caused by the long-term operation of the internal odometer is eliminated, and the positioning precision is improved.
Owner:BEIJING INST OF TECH
Multi-modal data-driven complex product installation and adjustment characteristic body intelligent sensing and key event cognition method and multi-modal data-driven complex product installation and adjustment characteristic body intelligent sensing and key event cognition system
PendingCN121958859Areduce dependenceAchieve stable representationCharacter and pattern recognitionBiological modelsLinguistic modelEvent cognition
The invention discloses a multi-modal data driven complex product installation and adjustment feature and key event cognition method and system. The method comprises the following steps: firstly, synchronously collecting and performing time sequence alignment on vision, point cloud, force sense and motion data; extracting geometric invariant features decoupled from the visual angle through a dynamic graph convolutional neural network, and generating mechanical residual time sequence features based on a physical information neural network agent model; then, improving the heterogeneous features into structured scene semantic representation by using a multi-modal fusion network and an installation and adjustment domain knowledge graph; and finally, through a vertical domain large language model integrated with a temperature scaling probability calibration mechanism, real-time identification and quantitative confidence evaluation of installation and adjustment events such as stable slippage and abnormal clamping stagnation are realized. According to the method, the robustness of state perception, the physical interpretability of event identification and the credibility of decision making in the installation and adjustment process are effectively improved.
Owner:CHONGQING UNIV +1
High-pixel, large-FOV, small-aperture optical system and head-mounted device
The application discloses a high-pixel, large-visual angle and small-caliber optical system and a head-mounted device, which mainly comprises six lenses, the number of lenses is reasonable, the structure is simple, the effective focal length and the optical power of the lenses are reasonably distributed, the imaging quality of the optical system is improved, the optical system has the advantages of high pixels and a large visual angle, meanwhile, the configuration of a large aperture can increase the light quantity of the optical system and the imaging quality is higher, so that the head-mounted optical system has greater competitiveness in the head-mounted device market.
Owner:HONGJING OPTOELECTRONICS (XIANTAO) TECH CO LTD
Sediment floc structure parameter measurement method, system, device and medium based on three-dimensional reconstruction
The application discloses a kind of based on three-dimensional reconstruction's silt flocculation structure parameter measurement method, system, equipment and medium, belong to flocculation monitoring technical field.The method comprises: by at least two image acquisition devices, the two-dimensional image of silt flocculation is synchronously collected from different visual angle, and its imaging geometric parameter is obtained;The two-dimensional image of silt flocculation is segmented to obtain the binary mask of each visual angle;Based on imaging geometric parameter, each mask is reversely projected to three-dimensional space to form visual cone, and the three-dimensional visual convex hull model of silt flocculation is obtained by intersection operation;Based on the three-dimensional visual convex hull model, the structure parameter of silt flocculation is output.Therefore, by implementing the present application, the problem that the calculation error of irregular silt flocculation structure parameter is large in the prior art based on single visual angle two-dimensional projection and sphere assumption can be solved, and the accurate measurement of the real three-dimensional morphology of silt flocculation is realized.
Owner:SUN YAT SEN UNIV
Micro LED micro display screen divergence angle testing device
The utility model discloses a Micro LED micro display screen divergence angle testing device. The device comprises a bearing base; a vertical rod is longitudinally connected to the bearing base in a sliding mode. The vertical rod is connected with a limiting device for limiting the vertical rod; an XYZtheta four-axis platform used for adjusting the horizontal position, the height position and the inner angle in the horizontal direction is mounted on the bearing base; a display screen fixing vertical frame for detachably fixing a micro display screen is mounted above the XYZ theta four-axis platform; the vertical rod is provided with a plurality of vertically-arranged inserting hole sets. A probe is inserted into one of the multiple groups of insertion hole groups; and the probe is connected with the spectrograph through an optical fiber. According to the scheme provided by the utility model for the divergence angle test of the Micro LED micro display, the visual angle detection of a backlight type display screen or a screen with lower brightness can be compatible; according to the invention, the divergence angle of any position of the active light-emitting micro display screen can be tested, and detection of ultrahigh brightness can be supported.
Owner:SHAOXING JUNWAN MICROELECTRONICS TECH CO LTD
Embedded industrial computer
The utility model discloses an embedded industrial computer, which belongs to the technical field of embedded industrial computers and comprises a base and a computer body, a fixing frame is fixedly connected to the front of the base, a clamping frame is arranged in the fixing frame, the computer body is arranged in the clamping frame, a sliding groove is formed in the top of the base, and a sliding block is arranged in the sliding groove. A supporting rod is arranged at the top of the sliding block, the computer body is clamped in the clamping frame, the driving device is started, the sliding block moves in the sliding groove, the top and the bottom of the supporting rod are driven to rotate respectively, the bottom of the clamping frame rotates in the fixing frame, the angle adjustment work of the computer body is achieved, and the display angle of the embedded industrial computer is adjusted; the use experience of a user can be improved, and the working efficiency can be greatly improved through optimization of the visual angle; the clamping block is pressed down, the spring stretches out and draws back, the clamping block enters the containing groove from the clamping groove, the clamping block and the clamping groove are detached, the spring recovers, the computer body is taken out of the clamping frame, and convenience is brought to overhaul work of the computer body.
Owner:GUANGZHOU YANHENG COMPUTER TECH CO LTD
Active perception cross-domain adaptation method and system based on scholar model guidance
Owner:ZHEJIANG UNIV
Head end part of endoscope and endoscope
The embodiment of the utility model provides a head end part of an endoscope and the endoscope, the head end part is provided with an end face facing the far end and a side face extending from the edge of the end face to the near end, the head end part comprises a first ultrasonic assembly, the first ultrasonic assembly is provided with a first acoustic window, the first acoustic window is arranged on the end face, and the surface of the first acoustic window is flush with the end face; the instrument channel opening is formed in the end face; the second ultrasonic assembly is provided with a second acoustic window, the second acoustic window is arranged on the side face of the end portion, and the instrument channel opening is located between the first acoustic window and the second acoustic window. According to the technical scheme, an operator can switch between the first ultrasonic visual angle of the end face and the second ultrasonic visual angle of the side face, and therefore different inspection requirements are met. When a treatment instrument extends out of the instrument channel opening, the second ultrasonic visual angle can guide the treatment instrument more accurately, and therefore operation such as ultrasonic guided puncture is completed.
Owner:SONOSCAPE MEDICAL CORP
A robot satellite assembly method and system based on multi-modal reinforcement learning
This invention provides a robotic satellite assembly method based on multimodal reinforcement learning, belonging to the field of robotics. The method comprises a multi-degree-of-freedom spatial robotic arm system, a force perception system, a visual perception system, and a reinforcement learning system based on multimodal perception. The visual perception system acquires QR code target information and axis image information of the satellite parts; the force perception system acquires force and torque information at the end effector of the robotic arm; the acquired dual-view visual perception information is transmitted to the reinforcement learning system based on multimodal perception, where multiple decision networks are trained using a multimodal reinforcement learning algorithm to obtain a trained decision network. An admittance control algorithm is then used to output position and attitude adjustment strategies; the multi-degree-of-freedom spatial robotic arm system controls the robotic arm to complete the satellite assembly task. Using this invention can improve the efficiency of space robot satellite assembly.
Owner:UNIV OF SCI & TECH BEIJING