489 results about "Whiteboard" patented technology

The invention relates to the technical field of line laser three-dimensional scanning, in particular to a reference coordinate system calibration method based on line laser three-dimensional scanning, which comprises the following steps of: calibrating camera parameters; calibrating a light plane equation of the laser; obtaining a calibration whiteboard image; establishing a reference coordinate system; and calculating a conversion matrix from the camera coordinate system to the reference coordinate system. The reference coordinate system of the line laser three-dimensional scanner can be determined only by additionally acquiring a white board image during calibration, and whether the current object is located in the measurement range or not can be determined according to the z coordinate value of the point cloud data by converting the acquired three-dimensional point cloud data of the measured object to the reference coordinate system. And the efficiency and the accuracy of subsequent point cloud processing and three-dimensional measurement are greatly improved. Therefore, the problem that an existing calibration method is low in measurement precision is solved.

The invention provides a document annotation method and device for an electronic whiteboard, equipment and a storage medium, and the document annotation method for the electronic whiteboard comprises the steps: obtaining voice information and touch information under the condition that the electronic whiteboard displays a document, judging whether to enter an annotation mode or not according to the voice information and the touch information, and carrying out the annotation of the document in the annotation mode. A user is prevented from mistakenly entering an annotation mode during normal explanation and writing, the annotation position is determined, the touch pressure value, the moving speed of a touch gesture, the contact area and the direction angle are obtained when it is determined that the annotation mode is entered, comprehensive analysis is conducted through the intention recognition model, the target operation intention is determined, the recognition accuracy of the target operation intention is improved, and the user experience is improved. The target operation is triggered according to the target operation intention, the annotation mode is provided through the target operation including the annotation content input operation, the zooming operation or the page turning operation, the situation that document content is shielded by annotation content input is avoided, meanwhile, the annotation mode further supports the zooming operation and the page turning operation, and the explanation effect is guaranteed.

Systems and methods may include having an integrated unified filing engine. A system may include at least one processor configured to maintain at least one table containing a plurality of items and a plurality of asset designations, and to maintain at least one electronic whiteboard containing at least a subset of the plurality of asset designations. The processor may be further configured to maintain a data structure containing a plurality of links, wherein each link associates at least one of the subsets of asset designations with at least one location on the at least one electronic whiteboard, receive via a network access device, an activation of a particular link associated with a particular asset, alter a display of at least one electronic whiteboard containing an asset designation, and retrieving a presenting a corresponding asset in response to a received selection of a particular asset designation.

The invention relates to an interaction instruction identification method and device and an electronic whiteboard cooperation system, and the method comprises the steps: obtaining the interaction data of each mode in a target scene; based on a multi-modal cross attention mechanism, carrying out data fusion on the interaction data of each modal to obtain fused modal data, and combining the fused modal data and the interaction data of each modal into target modal data; judging whether the user intentions corresponding to the target modal data have intention conflicts or not, and if yes, determining a to-be-executed intention from different user intentions based on a preset conflict resolution rule in the target scene; and generating an execution operation instruction according to the to-be-executed intention. Based on a multi-modal cross attention mechanism, accurate fusion of interaction data of different modals can be completed, the data isomerism of different modals and the expression form difference of the same intention are solved, and the accuracy of interaction instruction recognition is finally improved in combination with a conflict resolution rule.

The invention provides an electronic whiteboard writing track optimization method and device, equipment and a storage medium, and the method comprises the steps: obtaining the coordinates, collection time, pressure values and inclination angles of a plurality of sampling points for writing on a screen of an electronic whiteboard through an intelligent pen, determining a central sampling point, and obtaining a writing track of the electronic whiteboard according to the coordinates and the collection time; the method comprises the following steps: determining speed information and acceleration information of a central sampling point according to coordinates of a Bessel curve, dynamically determining the order of the Bessel curve to determine a control point set, determining the instantaneous speed of each control point in the control point set according to the coordinates, and calculating the instantaneous speed of each control point according to the instantaneous speed, the pressure value, the inclination angle and the corresponding specified weight of each control point. According to the method, the width attribute value of each control point is determined, so that the writing track is smoother and has good impression, the width attribute value of each control point is determined based on various factors such as the instantaneous speed, the pressure value and the inclination angle, the line width of the target writing track is adjusted, the real handwriting feeling can be restored, and the writing experience is improved.

1. The name of this design product: oval hanging box. 2. Purpose of the product with this appearance design: The product is used to be pasted on a smooth surface for storage, such as storing whiteboard erasers. 3. The design key points of this appearance design product are: the main view. 4. The picture or photo that best illustrates the key points of the design: main view.

1. Name of the Design Product: Whiteboard Pen (Petal). 2. Use of the Design Product: For writing, marking, etc. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photo Most Indicating the Design Key Points: 3D View of Design 1. 5. Design 1 is designated as the basic design.

The invention provides a page turning control method, system and device for an electronic whiteboard and a storage medium, and the method comprises the steps: obtaining multi-modal data in an explanation process, positioning a current explanation area on a current page according to the multi-modal data, and carrying out the focusing display of the current explanation area; calculating the explanation progress of the current page according to the current explanation area, and pre-loading the content of the next page in advance under the condition that the explanation progress reaches a preset threshold value; and when it is determined that explanation of the current page is completed based on the explanation progress, automatically skipping to the next page and calling the loaded content of the next page for display. Whether the preloading operation is triggered or not can be determined according to the explanation progress, content loading delay can be avoided through the preloading operation, page turning fluency is ensured, and waste of system resources is avoided.

Disclosed are a multi-area writing method and apparatus for an electronic whiteboard, a terminal device, and a storage medium. The method comprises: obtaining boundary coordinates and an area type identifier of each writing area in an electronic whiteboard, wherein the area type identifier is used for indicating the type of a writing trajectory that can be displayed in the corresponding writing area; when a touch signal is detected, determining coordinates and a type identifier of touch points; on the basis of the boundary coordinates of each writing area and the coordinates of the touch points, determining the writing area where the touch points are located, to obtain a selected writing area; and when it is determined that the area type identifier of the selected writing area is consistent with the type identifier of the touch points, mapping the touch points to the selected writing area. By determining whether the coordinates of touch points of writing trajectories are within boundary coordinate ranges of different areas of the electronic whiteboard and whether the type identifiers of the touch points are consistent with the type identifiers of different areas of the electronic whiteboard, the accuracy of displaying different types of writing trajectories on the different writing areas of the electronic whiteboard is improved.

An Operating Room Management System (ORMS) for facilitating the efficient and optimal organization of hospital medical personnel and resources runs on local and remote servers and comprises a real-time updated daily schedule which is displayed on digital whiteboards and other displays throughout the hospital. The schedule display simplifies the crucial information concerning common hospital concerns and permits quick, accurate decision making on the part of the hospital medical personnel and administrators.

The invention relates to the technical field of teaching equipment, in particular to an intelligent teaching instrument for law education, which comprises a shell, a connecting rod and the like, and the shell is fixedly connected with a connecting rod. According to the invention, a whiteboard film is pasted on the surface of the curtain, so that a teacher can directly write on the surface of the curtain by using a whiteboard pen without repeatedly switching between the curtain and a blackboard, and two first electric sliding blocks located on the same abutting plate move in opposite directions and drive a cross connecting rod to unfold, so that the operation is convenient, and the teaching efficiency is improved. The crossed connecting rods drive the abutting plates to be far away from each other, so that the folding plates are gradually pulled and straightened through the abutting plates, the abutting plates and the folding plates are matched to form a whole back plate, and when writing is conducted on the surface of the curtain, the abutting plates and the folding plates can serve as supports, so that sinking deformation of the curtain is avoided; therefore, normal writing operation can be carried out on the curtain.

The invention provides a writing feedback method, system and device for an electronic whiteboard and a storage medium, and the method comprises the steps: collecting original handwriting coordinate data generated by a touch screen when a user writes on the touch screen of the electronic whiteboard, and obtaining corresponding stroke parameters; dynamically selecting a currently applicable target sampling processing strategy based on the stroke parameter; based on a target sampling processing strategy, sampling the original handwriting coordinate data to obtain target handwriting coordinate data; calling the target kernel event queue to transmit the target handwriting coordinate data to a target event processing thread; and calling the target event processing thread to render the target handwriting coordinate data so as to display the handwriting written by the user on the touch screen. According to the application, real-time writing response of the electronic whiteboard can be realized, writing feedback delay of the electronic whiteboard can be reduced, and writing experience of a user can be improved.

The invention relates to the technical field of pet food spectrum detection, and discloses a pet food spectrum detection device and a detection method. Sampling at equal intervals in a preset wavelength range, and eliminating noise interference through dark current and standard whiteboard calibration; taking a natural logarithm of the reflectivity to balance a dynamic range; constructing a linear spline basis in an equidistant and segmented manner, and adaptively calculating a regularization coefficient according to the energy ratio of the signal to the basis function; constructing an augmented matrix according to a basis function and a signal inner product, and solving a spline coefficient through Gaussian elimination; reconstructing a spectrum by using the coefficient and quantifying a residual error; establishing a reference model based on the coefficient mean value and the standard deviation of the multiple qualified samples; comparing the Euclidean distance between the to-be-detected sample coefficient and the model mean value with a threshold value, and generating a residual error, a distance, a threshold value and a judgment report; empirical parameters or manual adjustment and optimization are not needed in the whole process, online adaptive detection in batches can be achieved, and noise correction, feature enhancement, over-fitting suppression and traceable rapid and accurate detection are achieved.

The invention discloses an AOI detection system and detection method in front of a hot pressing line of a light guide plate, and relates to the technical field of light guide plate detection, and the method comprises the steps: judging whether defects exist or not based on a real-time white board binary image, and obtaining an abnormal contour; constructing a real-time detection ratio based on the abnormal contour; obtaining a second number of images of the light guide plates with the scratch defects before hot pressing, and marking the images as historical scratch images; obtaining a detection ratio threshold value based on the historical scratch graph; and dividing the first type of defects and the second type of defects on the basis of the real-time detection ratio and the detection ratio threshold. The method and the device are used for solving the problem that the subsequent production efficiency of the light guide plate is affected due to the lack of simple defect type division in the existing light guide plate detection technology.

Disclosed are a correction system and method for eliminating non-uniform distribution of a light field during hyperspectral image acquisition, to effectively eliminate the impact of non-uniform light field distribution caused by halogen light illumination on acquisition of hyperspectral image information. The correction method includes acquiring hyperspectral images A corresponding to two standard whiteboards with different reflectance under illumination of a halogen light source. A hyperspectral image B is acquired corresponding to a tea leaf sample under illumination of the same light source. Spatial distribution characteristics of a light field are obtained based on the hyperspectral images A. Pixels in the hyperspectral images A and B are spatially matched. Light field correction is performed on a pixel of the sample in the hyperspectral image B, and reflectance correction is performed on the sample after the light field correction.

1. The name of the product of this design: Storage cabinet glass whiteboard (A2). 2. Purpose of this product with design: This product with design is used for teaching, office, etc. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The invention provides an electronic whiteboard mind map editing method and device, equipment and a storage medium, and the electronic whiteboard mind map editing method comprises the steps: obtaining the node information of each node in a mind map of an electronic whiteboard, carrying out the real-time analysis of the node information of each node, determining a dynamic distance threshold value, and carrying out the dragging operation of the electronic whiteboard, thereby achieving the editing of the mind map of the electronic whiteboard. Dragging a target node in the mind map from a first position to a second position, calculating a moving distance between the first position and the second position, and when the moving distance is greater than or equal to a dynamic distance threshold value, determining a target hierarchical relationship between the target node and other nodes according to the second position and node information, the target nodes are rearranged according to the target hierarchical relationship, the rearranged target nodes are displayed, effective dragging is accurately distinguished through the dynamic distance threshold value, and therefore the target nodes are rearranged and displayed according to the target hierarchical relationship, hierarchical relationship reconstruction and display are achieved, and the editing experience of a user is improved.

The invention provides a handwriting input method and system of an electronic whiteboard, a readable storage medium and a computer, the method comprises the following steps: when the electronic whiteboard is in a writing mode, carrying out region identification on a handwriting region at preset time intervals to obtain corresponding to-be-identified data; constructing a feature extraction model, performing text recognition on the to-be-recognized data, and inputting a text recognition result into the feature extraction model for feature extraction to obtain corresponding feature data; performing data type judgment on the feature data, calling a corresponding identification strategy according to a judgment result, and performing data identification on the feature data by using the identification strategy to obtain a corresponding identification result; and performing binary conversion on the recognition result, and performing data storage on the binary conversion result. According to the invention, rapid data identification is realized by using different data types, so that the overall identification precision is improved.

In various implementations, furniture, such as a table (e.g., a desk) and / or free-standing board, may include an organizational frame to which other members (e.g., table top, white board, smart board, etc.) may be coupled. The frame may include legs and at least one organizational member disposed between two or more of the legs. The organizational member may include a plurality of openings. The opening(s) in the organizational member may be able to couple with one or more organization tools.

The present invention relates to an AI question-answer system and method based on time-synchronized multimodal lecture data, configured to generate a Knowledge Chunk by time-synchronizing handwriting data and voice data collected from an electronic whiteboard, and to provide an answer linked to the corresponding lecture point in time to a learner's visual reference question using Retrieval-Augmented Generation (RAG) technology. More specifically, the invention comprises: time-synchronizing the handwriting coordinate stream and voice stream of the electronic whiteboard within a predetermined error range; recognizing visual indicators (stars, underlines, circles, etc.) within the handwriting and assigning semantic tags; generating a multimodal Knowledge Chunk including voice text, handwriting images, timestamps, and indicator tags, and storing it in a vector database; providing an answer containing a timestamp link of the corresponding lecture point in time using Retrieval-Augmented Generation (RAG) technology to a learner's visual reference question ("What is the starred part?"); and simultaneously playing the video and handwriting at that point in time when the link is selected, thereby enabling the learner to effectively review lecture content and receive an accurate answer to the question. This relates to an AI question-answering system and method based on multimodal lecture data.

1. The name of the design product: play control processor. 2. The use of the design product: used for video, image playing, processing and control, supporting document demonstration, video playing, wireless projection, electronic whiteboard, camera, microphone and conference system. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: design 1 perspective view 1. 5. Design 1 is designated as the basic design.

The utility model relates to the technical field of coated white board processing, in particular to a high-toughness coated white board shearing device which comprises a machine frame, a synchronous belt, a fixing frame, a sliding frame, a distance measuring assembly and a smoothing feeding mechanism. Supporting legs are arranged at the bottom of the rack and connected with a supporting mechanism used for fixing the white board winding roller. The synchronous belt is movably connected with the rack, and a tool apron is arranged on the rack. The fixing frame is connected with a cutter in a sliding mode, the cutter is located above the cutter holder, and a hydraulic cylinder A for driving the cutter to ascend and descend is arranged on the fixing frame. The sliding frame is in sliding connection with the rack, and the rack is provided with a linear module for driving the sliding frame to be away from or close to the fixing frame. The distance measuring assembly is connected with the fixing frame and measures the distance between the fixing frame and the sliding frame in the working state. The flattening and feeding mechanism is connected with the sliding frame, and the flattening and feeding mechanism cooperates with the synchronous belt to flatten the white paperboards and convey the white paperboards to the tool apron in the working state. The coated white board cutting device can quickly flatten and cut the coated white board in a fixed-length mode.

The utility model relates to the technical field of electronic whiteboards, in particular to a classroom electronic whiteboard all-in-one machine which comprises a rectangular frame, fixed blackboards fixedly installed on the two sides in the rectangular frame, a first sliding blackboard, a second sliding blackboard and an electronic whiteboard fixed to the middle of the rectangular frame. Two symmetrical sliding groove sets are formed in each of the top and the bottom of the rectangular frame, each sliding groove set comprises two transversely-arranged sliding grooves, guide grooves are formed in the ends of the sliding grooves, chamfers are formed in the opposite sides of the two fixed blackboards, and first sliding columns are fixedly connected to the two sides of the top and the two sides of the bottom of the first sliding blackboard. The sliding blackboard has the advantages that when the sliding blackboards are moved, the fixed blackboards cannot affect movement of the sliding blackboards, so that the two sliding blackboards can be smoothly opened in a sliding mode, when the sliding blackboards horizontally move front and back, the first belt can still achieve the purpose of transmission, and the sliding blackboards can smoothly and synchronously slide to be opened or closed.

To achieve a writing device that can suppress a writing sound.SOLUTION: A pen-type input device 1 has: a movable part 10 that has a contact member 11, is provided movably in an advance / retreat direction, and retreats upon contact of the contact member 11 with an electronic blackboard 50; a movable part holding body 13 that holds the movable part 10; and an elastic part 20 that is provided on the opposite side of the contact member 11 of the movable part 10 in the advance / retreat direction. The elastic part 20 has a first elastic body 14 and a second elastic body 15, and is elastically deformed by the retreat of the movable part 10 and reduced in thickness in the advance / retreat direction. The first elastic body 14 and the second elastic body 15 are provided adjacent to each other in this order with respect to the movable part 10. The first elastic body 14 is an elastic body having a lower hardness than the second elastic body 15.SELECTED DRAWING: Figure 3

The utility model discloses repulping conveying equipment for white board processing, which comprises a bottom plate, the outer surface of the bottom plate is fixedly connected with a power component, the outer surface of the bottom plate is fixedly connected with a support frame, the outer surface of the support frame is fixedly connected with a composite crushing cavity, and a power shaft is arranged in the composite crushing cavity. By means of the front variable-diameter spiral and the rear variable-diameter spiral arranged on the conveying shaft, thick conveying of the front section and pressurizing propelling of the rear section are utilized, slurry flows more evenly, blocking is avoided, and the problems that conveying equipment of a single spiral propelling structure is poor in slurry fluidity, the slurry is prone to being clamped, and follow-up machining is affected can be effectively solved. Meanwhile, the concentration sensor is used for detecting the concentration of the materials conveyed by the conveying assembly in real time, the high-pressure micro-flow nozzle is matched for spraying water to the materials, the concentration of the slurry is adjusted in real time, the stability of the concentration of the slurry can be effectively ensured, and the production efficiency of the equipment is improved.

1. The name of the design product: teaching whiteboard. 2. The use of the design product: whiteboard for teaching. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention discloses a self-adaptive ambient light matching method and system for the color temperature of an electronic whiteboard, ambient light information is collected through a common camera, the color characteristics of ambient light are sensed in real time in combination with an intelligent spectrum reconstruction algorithm and a color temperature matching strategy, and the color temperature displayed by the electronic whiteboard can be dynamically matched with the ambient light, so that the color temperature of the electronic whiteboard can be dynamically matched with the ambient light. Comprising the following steps: 1, pre-constructing a strategy library in which a plurality of groups of color temperature-brightness parameters and matched scenes are stored; 2, acquiring an ambient light image through a wide-angle camera, and performing multi-frame average noise reduction and exposure calibration on the ambient light image to obtain an RGB measured value of ambient light; 3, based on a preset PCA spectrum basis vector library, reconstructing the RGB measured value of the ambient light into an ambient spectrum in a range of 380-780 nm by adopting a non-negative sparse regression algorithm; and 4, calculating an environment color temperature according to the reconstructed environment spectrum, selecting a color temperature-brightness parameter matched with the environment color temperature from a strategy library in combination with a CIE CAM02 color adaptation transformation model, and adjusting the electronic whiteboard.

The application discloses a white board paper processing uniform feeding device and belongs to the technical field of conveying, which comprises a conveying groove, a conveying belt arranged in the conveying groove, a motor arranged on the side wall of the conveying belt, and a uniform feeding mechanism. The application can effectively destroy the interlayer bonding force of the material raw material, effectively destroy the hydrogen bond combination and the adhesive force of the adhesive between the waste paper layers, loosen the cemented paper block before entering the pulper, and simultaneously supplement water from the inside while uniform feeding, reduce the dust generated during conveying, realize deep water penetration of the material, accelerate the full wetting and softening of the fibers in the raw material, and automatically detect the water content of the material according to the acting force between the uniform feeding roller and the material, automatically adjust the water supplementing amount, avoid paste blocking caused by excessive humidity of the material raw material, realize automatic water supplementing and automatic adjustment of the material, and guarantee the quality of subsequent processing of the material.

The utility model relates to a white board support, in particular to an adjustable white board support. The utility model provides an adjustable white board support which comprises a foot stool and a connecting rod. The bottoms of the foot stools are connected with the ground; limiting bumps are arranged at the tops of the foot stools; limiting grooves are formed in the four walls of the connecting rod, limiting structures are fixedly arranged at one ends in the limiting grooves, and the limiting structures are detachably connected with the limiting protruding blocks. The top of one connecting rod is also provided with a limiting bump, the bottom of the connecting rod is provided with a clamping groove matched with the limiting bump, the limiting bump is arranged in the clamping groove of the other connecting rod, and the limiting bump is detachably connected with the limiting structure; or the limiting bump is in sliding connection with the other connecting rod at the limiting groove. The utility model mainly aims to provide an adjustable whiteboard bracket, and solves the technical problems that the telescopic structure of the existing whiteboard bracket is easy to loosen and easy to fall apart in the use process.

The utility model discloses a preschool education teaching demonstration teaching aid, which relates to the technical field of education or demonstration appliances and comprises two fixing supports, a connecting rod is fixedly connected between the two fixing supports, lifting grooves are formed in the opposite ends of the two fixing supports, toothed plates are slidably connected to the inner walls of the two lifting grooves, and the toothed plates are fixedly connected with the connecting rod. The opposite ends of the two toothed plates are fixedly connected with a display whiteboard, a sliding groove is formed in one side of the display whiteboard, the inner wall of the sliding groove is slidably connected with a movable hook, the rotating rod drives the gears to rotate, then the gears drive the corresponding toothed plates to move up and down, and then the corresponding toothed plates drive the display whiteboard to adjust the height. The height of the display whiteboard can be flexibly adjusted by rotating the rotating rod, and the operation process is simple and rapid, so that a teacher can conveniently adjust the height of the display whiteboard, and the practicability of the display teaching aid is further improved.