742 results about "Projection screen" patented technology

The invention relates to the technical field of projection display, and discloses a multi-projection picture splicing method and system based on geometric correction. The method comprises the following steps: acquiring initial parameters and original picture data of the multi-projection equipment, wherein the original data contains an overlapped region image and is acquired according to a preset direction; geometric correction is carried out on the original image, geometric distortion feature points are extracted, and a mapping relation matrix is generated; dividing projection boundaries based on the matrix, and adjusting parameters to form a correction parameter set; performing spatial registration on the picture data according to the parameter set to generate multi-channel data; and carrying out fusion processing on the multi-channel data overlapping region, eliminating light intensity difference and color deviation, and generating a continuous splicing picture. The system comprises a data acquisition module, a geometric correction module, a parameter adjustment module, a space registration module and a fusion processing module. Through high-precision geometric correction, adaptive fusion and dynamic adjustment, the precision and visual effect of multi-projection image splicing are improved, and the method is suitable for large-size display scenes and has the advantages of being high in environmental adaptability, high in automation degree and the like.

The utility model discloses a projection screen support with small storage volume, which comprises a connecting disc, a plurality of first supporting rods and two supporting legs, the first supporting rods are rotatably connected with the connecting disc, the plurality of first supporting rods are arranged around the outer side of the connecting disc, first elastic hanging pieces are arranged on the first supporting rods, and the two supporting legs are arranged on the first supporting rods. First clamping grooves are formed in the connecting disc, first elastic hanging pieces are arranged in the first clamping grooves, first buckles extend on the first elastic hanging pieces, the first buckles are clamped into the first clamping grooves, the supporting legs are rotationally connected with the connecting disc, the two supporting legs are arranged around the outer side of the connecting disc, second elastic hanging pieces are arranged in the middles of the supporting legs, second buckles extend on the second elastic hanging pieces, and the second buckles are clamped into the second clamping grooves. And the second buckle is clamped into the second clamping groove. The projection screen support provided by the utility model is small in storage volume, can be folded to reduce the volume, and is convenient for a user to store and carry.

The present application relates to a kind of vehicle body paint defects detection device and its detection method, including servo controller, industrial computer, vehicle body conveying mechanism, several area array cameras, several projectors and several projection screens, the industrial computer is connected with the servo controller, the servo controller is connected with the vehicle body conveying mechanism, the vehicle body conveying mechanism can be driven under the action of the servo controller and industrial computer and be moved in length direction and height direction for vehicle to be detected, the area array camera is distributed around vehicle to be detected, the industrial computer is connected with the projector, the projection screen is set in the periphery of the projector and corresponds with the projector, the vehicle body paint defects detection device and its detection method, collection efficiency is high, imaging quality is high, system structure is compact, and cost is low.

A head-up display system and a vehicle system are provided. The head-up display system includes a display and a projection screen. The display is configured to display a first image. The projection screen is disposed adjacent to the display and is configured to let the first image to be projected thereon to form a second image. The display includes a first region adjacent to the projection screen and a second region away from the projection screen. The projection screen includes a third region adjacent to the display and a fourth region away from the display. When the display displays the first image, a brightness difference between the first region and the second region is greater than a brightness difference between the third region and the fourth region.

Systems and methods described herein relate to using silver-coated twisted-coil polymer fibers to adjust the shape of inflatable structures, such as to provide an adjustable curved projection screen. In one embodiment, a method includes providing an adjustable inflation system capable of providing an electrical stimulus to a set of fibers within an inflatable structure where the set of fibers can adjust a surface of the inflatable structure from a first state to a second state based on the electrical stimulus.

The utility model discloses a projection screen, a sky screen and a vehicle, the projection screen is used for the vehicle, the vehicle comprises a top frame, the projection screen comprises a screen and a driving mechanism, and the screen is rotatably connected with the top frame through a rotating shaft; the driving mechanism comprises a first driving motor, a driving sliding block and a driving rod, the first driving motor is in transmission connection with the driving sliding block, the driving rod is hinged between the screen and the driving sliding block, and the first driving motor drives the screen to rotate around the rotating shaft through the driving sliding block and the driving rod. According to the projection screen, the first driving motor drives the screen body to rotate around the rotating shaft through the driving sliding block and the driving rod so that the screen body can move between the containing position and the unfolding position, the screen body does not occupy the space in a vehicle when located at the containing position, the screen body is used by passengers in the vehicle when located at the unfolding position, and the screen body is driven to rotate through the first driving motor. Practicality and convenience of storage and unfolding of the screen can be improved.

The invention discloses a projector and optical motion capture joint calibration system and method, and relates to the technical field of projection, and the method comprises the steps: erecting an optical motion capture camera, obtaining a calibration tool, moving the calibration tool, carrying out the information collection based on the optical motion capture camera, and determining the internal and external parameters of the optical motion capture camera. Outputting a motion capture system calibration completion result; when a calibration completion result of the motion capture system is received, obtaining an RGB camera, and installing a calibration rigid body on the RGB camera; performing hand-eye calibration on the RGB camera and the calibration rigid body to obtain camera internal reference information and hand-eye calibration external reference information, and outputting a hand-eye calibration completion result; and after a hand-eye calibration completion result is received, creating a pattern sequence image, projecting the pattern sequence image on the projection screen, adjusting the pattern sequence image, and outputting a pattern projection completion result. The method has the effect of improving the joint calibration precision of the projector and optical motion capture.

Some embodiments of the invention provide a screen projection data-based picture display method, which can receive screen projection data sent by a terminal device, and detect feature information of the screen projection data in a preset time period. If the feature information is changed in the preset time period, maintaining display parameters of the projection screen; otherwise, calculating a target display parameter of the screen projection picture according to the invalid picture area of the current picture frame, and controlling the display to display the screen projection picture according to the target display parameter. Wherein the target display parameter is used for setting the center point of the effective picture area in the current picture frame at the reference center point of the user interface, and meanwhile, the display proportion of the effective picture area in the user interface is made to be maximum. According to the method, when the projection screen data is in the stable state, the invalid picture area displayed by the display equipment can be removed to the greatest extent, and the picture centering display effect of the valid picture area is kept, so that the display effect of the projection screen picture is improved while the system resource consumption is reduced.

The utility model discloses a vehicle-mounted projection screen, which comprises an outer cover, a curtain, two symmetrical folding rods and a transverse plate, a winding drum is rotatably connected in the outer cover, a motor is arranged in the outer cover, an output shaft of the motor is connected with one end of the winding drum, one end of the curtain is wound on the outer side of the winding drum, the other end of the curtain extends out of the outer cover, and the transverse plate is arranged in the outer cover. One end of the folding rod is rotatably connected with the outer cover, an elastic assembly is arranged on the folding rod, the two ends of the elastic assembly are connected with the two ends of the folding rod respectively, the middle of the elastic assembly abuts against the bent position of the folding rod, the other end of the folding rod is rotatably connected with the transverse plate, and the other end of the curtain is fixedly connected with the transverse plate. According to the vehicle-mounted projection screen provided by the utility model, the film watching display area of film and television equipment in a carriage is increased, and the discomfort of eyes of a user during watching can be reduced by adopting the screen displayed by reflected light.

The invention relates to a one-to-many screen projection dynamic coding control method and device and a storage medium, the dynamic coding control method is applied to a sending end during one-to-many screen projection, the sending end is in communication connection with a plurality of receiving ends, and the dynamic coding control method comprises the following steps: connecting a data source device, and obtaining screen projection data; acquiring a communication quality parameter once every other preset monitoring period; the communication quality parameters are communication quality parameters of communication connection between the sending end and each receiving end; encoding the screen projection data according to the communication quality parameters to obtain encoded data; and sending the coded data to the receiving end for screen projection display. According to the invention, the data display effects of different receiving ends can be dynamically adjusted according to the quality of wireless communication in the monitoring period, so that the user experience of one-to-many screen projection is improved.

The invention provides a multi-window different display screen projection method based on a container execution mechanism, and relates to the technical field of intelligent terminal display, and the method comprises the steps: constructing a plurality of target containers based on an active component, and arranging the target containers according to a preset layout template to generate a virtual main window, acquiring a user touch screen event through the virtual main window, converting an original coordinate of the user touch screen event into a target coordinate, sending the target coordinate to a target application window in a target container, driving the target application window to execute logic operation, generating a real-time picture frame, storing the real-time picture frame in a frame buffer area of the target container, reading all the real-time picture frames through the virtual main window, and displaying the real-time picture frame. According to the method, the virtual windows are selected, the virtual windows are spliced according to a preset layout template to obtain a synthesized projection screen picture, and the synthesized projection screen picture is coded and transmitted to an external screen projection end through a projection screen protocol, so that the development efficiency can be improved, multi-window different-display projection screen is realized, the projection screen diversity is enriched, various containers are flexibly arranged in the main virtual window, and the development efficiency is improved. And the method is suitable for different large-screen scenes and meets diversified screen projection requirements.

The embodiment of the invention provides a display device, a terminal device and a device projection screen anti-control method, and the method comprises the steps: obtaining a rotation state and a projection screen pixel value of a display through responding to a control instruction input by a user, dividing a picture display region according to a preset projection screen size based on the rotation state, and analyzing a click coordinate of the control instruction in the picture display area. And calculating a normalized coordinate according to the screen projection pixel value, a preset screen projection size and the click coordinate, generating an anti-control instruction according to the normalized coordinate, sending the anti-control instruction to the terminal device, and controlling the display to display a screen projection picture after the terminal device responds to the anti-control instruction. The click coordinate is converted into the normalized coordinate according to the pixel value and the screen projection size during screen projection of the display device, the synchronization of the click positions of the display device and the terminal device is improved, the anti-control instruction is generated according to the normalized coordinate, and the accuracy of the anti-control process is improved.

The invention relates to the technical field of projection optical systems, and discloses a speckle eliminating device which is arranged in a projection optical system and comprises a polarization conversion element and a vibration mechanism. Wherein the polarization conversion element is provided with at least two sub-regions, and at least one sub-region can convert the polarization state of the first light beam incident on the sub-region, so that the polarization conversion element outputs the first light beam with at least two different polarization states. The vibration mechanism is connected with the polarization conversion element and used for driving the polarization conversion element to vibrate. The speckle effect of the projection picture can be reduced, and the watching experience of a user is enhanced. The invention further discloses a projection optical system and projection equipment.

The invention discloses a screen projection cooperative control method based on gesture recognition, and particularly relates to the technical field of cooperative control. The method comprises the following steps: acquiring real-time video data of all users in a preset interaction space in real time, and performing spatial feature segmentation to obtain an initial user gesture spatial feature data set; performing spatial position proximity and overlapping degree analysis on the initial user gesture spatial feature data set to obtain a gesture spatial conflict feature set, and performing time sequence similarity analysis to obtain a gesture validity undetermined data set; through user identity association analysis, a gesture control intention affiliation probability matrix is output, an effective control user and an effective gesture instruction are determined by executing gesture ownership dynamic judgment, a deterministic operation instruction set is generated, and efficient cooperation of projection screen control affiliation judgment and operation execution under multi-user natural gesture input is achieved.

The invention discloses a tunnel construction deformation monitoring system based on machine vision and a monitoring method thereof, and belongs to the technical field of tunnel construction monitoring. Laser emitters arranged in a tunnel project light spots to a ground screen, an industrial camera is used for collecting images, the light spots are automatically identified, coordinates are calculated, and the coordinates are compared with an initial reference; according to the tunnel convergence and settlement displacement monitoring system and method, light spots are automatically recognized and three-dimensional coordinates are calculated through a vision measurement system composed of the laser transmitter and the industrial camera, unmanned and high-precision real-time monitoring of tunnel convergence and settlement displacement is achieved, the system is simple in structure and convenient to operate, and the working efficiency is improved. The problems of manual measurement errors and low efficiency are effectively avoided, the laser projection screen is arranged on the ground, interference of a complex environment in a tunnel on direct measurement is effectively avoided, meanwhile, the time control switch integrated in the system can set working time according to requirements, and intelligent management of energy is achieved.

The invention provides an infrared induction intelligent interactive projection large screen and ground screen holographic device, and relates to the technical field of intelligent display interaction. The equipment is composed of a large projection screen, a ground screen, an infrared induction device, a data processing host, a feature extraction and intention recognition module, an environment perception and adaptive adjustment module and an intelligent feedback and multi-mode interaction fusion module, and the large projection screen is used for displaying holographic images and has the functions of high brightness, wide color gamut and touch control; the ground screen is made of a transparent holographic imaging material, can synchronously display interaction information and has a touch sensing function, and the infrared sensing device captures three-dimensional action information of a user through an emitter and a receiver which are arranged in a matrix mode. The problems that a traditional display device is poor in interaction experience and single in display effect are solved, natural and smooth long-distance human body action interaction and immersive visual experience are achieved, and the system is suitable for many fields such as science and technology exhibition, commercial exhibition and intelligent education.

A projector system for a vehicle includes a projector screen configured to be installed proximate a rear end of the vehicle or a rear cargo of the vehicle when the liftgate of the vehicle is in an open position and a projector assembly having a housing supporting an image projector. The housing has a striker configured to releasably connect to a latch on the liftgate of the vehicle such that the image projector, when assembled on the liftgate in an open position, is operable to illuminate the projector screen.

The invention discloses a PMD three-dimensional measurement method of a self-adaptive fringe projection mode. The method comprises the following steps: firstly, based on the surface topography characteristics of a measured mirror surface element, acquiring phase gradient distribution of the measured mirror surface element under a camera visual angle; secondly, according to the phase gradient distribution, self-adaptively modulating the local period of the projected fringes, so that the structured light fringes formed on the imaging surface of the camera after being reflected by the measured surface are integrally kept uniform and have moderate sparsity; projection is carried out by using the adaptive fringe pattern, a fringe image modulated by a measured surface is collected, and a corresponding relation between camera pixels and projection pixels is established; and finally, reconstructing the three-dimensional shape of the measured mirror surface element through ray tracing. According to the method, the local density of the stripes on the projection screen is adaptively adjusted according to the angle transformation characteristic of the reflected light of the measured surface, so that the measured structured light stripes in the visual angle of the camera are uniformly distributed and are properly sparse, and the PMD measurement precision is maximized under the condition that the morphology analysis integrity is ensured.

The utility model provides a projection screen and a projection system, and the projection screen comprises a display diaphragm which is provided with a projection light-receiving surface; the screen frame comprises two side frames, the side frames are integrated side frames, the two side frames are connected to surround the periphery of the display membrane, each side frame comprises a first side frame and a second side frame, the first side frame and the second side frame are rotationally connected, and the second side frame comprises a first section and a second section; the connecting assembly comprises a rotary connecting piece, and the first section and the second section are connected with the rotary connecting piece; the adjusting part is located between the first section and the second section, and the rotary connecting part is rotationally arranged on the adjusting part and moves on the adjusting part so that the distance between the first section and the second section can be changed. According to the utility model, convenient home entry is realized, the gap of the second frame after assembly is reduced, and the stability after assembly is improved.

The invention discloses a projection curtain image reconstruction method and system combined with distortion correction and a medium, and relates to the technical field of image processing, and the method comprises the steps: projecting a calibration image to a curtain through a target projection device, and collecting a projection result through a sensing device group; geometric distortion is identified based on the calibration pattern library, and a screen distortion state is acquired; inputting the distortion state into a multi-channel distortion correction model, and making geometric, color and brightness correction decisions; therefore, the real-time projection image is reconstructed, and the reconstructed image is projected to the curtain again. Therefore, the technical effects of real-time, accurate and comprehensive reconstruction of the projection image and improvement of the image quality and the display stability are achieved.

The invention provides a head-up display system and a vehicle-mounted system. The head-up display system includes a display and a projection screen. The display displays a first figure. The projection screen is disposed adjacent to the display and configured to project the first drawing thereon to form a second drawing. The display includes a first region adjacent to the projection screen and a second region remote from the projection screen. The projection screen includes a third region adjacent to the display and a fourth region away from the display. When the display displays the first drawing, the brightness difference between the first area and the second area is greater than the brightness difference between the third area and the fourth area.

1. The name of the product of this design: Projection screen (simple buckle). 2. Purpose of the product of this design: projection screen. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the key points of the design: 3D drawing of Design 1. 5. Designate Design 1 as the base design.

The invention provides a high-speed moving target simulation generation device with laser cooperating with a fast rotating mirror. The high-speed moving target simulation generation device comprises a laser, the fast rotating mirror and a projection screen. The laser is used for generating laser beams; the fast rotating mirror is used for reflecting a laser beam emitted by the laser on the projection screen to form a laser spot for representing a simulated moving target; the projection screen is used for receiving reflected light of the fast rotating mirror; the fast rotating mirror is a regular prism, so that the incident laser beam forms mirror reflection on each side surface of the regular prism; the fast rotating mirror responds to the effect of a configured power source and can rotate in the axial direction of the fast rotating mirror so that laser spots on the projection screen can move in the corresponding direction. According to the device provided by the invention, when the rapid rotating mirror rotates, the incident angle of the laser on the surface of the rotating mirror continuously changes, so that the reflected laser continuously deflects, meanwhile, laser spots on the projection screen continuously move in the same direction, and a high-speed target of which the position continuously changes can be obtained.

Embodiments of the invention provide a display device and a projection screen display method, and the display device can establish a communication connection with a terminal device and receive projection screen data sent by the terminal device. Wherein the screen projection data comprises a picture frame used for forming a screen projection picture, and the picture frame comprises an effective picture area and an invalid picture area. According to the method, the invalid picture area of the picture frame can be detected, the target display parameter of the screen projection picture is calculated according to the invalid picture area, and then the display is controlled to display the screen projection picture according to the target display parameter. Wherein the target display parameter is used for setting the center point of the effective picture area in the picture frame on the center point of the user interface of the display equipment, and meanwhile, the proportion of the effective picture area of the picture frame in the user interface is maximized. According to the method, the invalid picture area displayed by the display equipment can be removed to the greatest extent, and meanwhile, the picture centering display effect of the effective picture area is kept, so that the watching experience of a user is improved.

The embodiment of the invention belongs to the technical field of display, and provides a laser television and a control method of a projection screen, the laser television comprises a laser projection device and a liftable projection screen, and the liftable projection screen comprises a first motor used for driving the projection screen to lift and a second motor used for driving the projection screen to fold and unfold; when the laser projection equipment receives a preset signal, a control signal is sent to the control module; the control module controls the two motors to work according to the control signal and drives the projection screen to move. In the moving process of the projection screen, the control module adjusts the rotating speed of the first motor and the rotating speed of the second motor according to the operation parameters of the first motor and the rotating speed signals corresponding to the operation parameters; height information of the projection screen is determined and sent to the laser projection equipment according to the operation parameters; and the laser projection equipment projects an image matched with the height information to the projection screen. The situation that the screen shakes or wrinkles occur in the lifting process is reduced, and the picture display effect is improved.

The invention provides a screen projection picture display method, system and device and a storage medium, relates to the technical field of screen projection, and is used for solving the problem that the screen projection experience of a user is poor. A first device establishes a communication connection with a second device. The first device displays a three-dimensional image of the target picture, and the second device displays a two-dimensional image of the target picture. Wherein the three-dimensional image of the target picture is obtained by performing conversion processing on the two-dimensional image of the target picture by the first equipment or the second equipment based on the screen projection operation instruction, and the screen projection operation instruction is used for indicating the three-dimensional image of the target picture to be displayed on the first equipment in a screen projection manner.

The invention discloses an optical coating, a manufacturing method of the optical coating and a projection screen, relates to the technical field of projection display, and aims at solving the problem that speckles of an existing projection screen are relatively serious. The optical coating is used for manufacturing a film layer for forming a projection screen and comprises an oily organic resin emulsion, an organic solvent and a matting material. Oily organic resin emulsions are used to form base solutions for optical coatings. The organic solvent and the oily organic resin emulsion are mixed with each other. The extinction material is mixed in the oily organic resin emulsion and the organic solvent. The extinction material is used for scattering the light passing through the extinction material. The optical coating is used for improving the quality of a projection picture.

1. Name of the product in this design: Curtain (TY-MB01). 2. Purpose of this design: A projection screen for displaying projected images. 3. The key design feature of this product is its shape. 4. The picture or photo that best illustrates the key design points: Design 1 3D diagram 1. 5. Design 1 is designated as the basic design.

The present invention discloses a multifunctional intelligent mirror support frame for the elderly and an intelligent mirror, which includes a support base. A projection control mechanism is fixedly provided at the top of the intelligent mirror mechanism. A telescopic camera mechanism is slidably provided at the top of the support base. A monitoring mechanism is fixedly provided at the top of the projection control mechanism. In the present invention, the limiting handle is used to pull out and move the moving frame, so that one end of the rotating frame rotates along one end of the moving frame, facilitating the adjusting block to drive the observation camera to move to a suitable position and height for shooting. The intelligent control center projects the images collected by the camera acquisition module onto the projection screen through the projection control module, enabling the elderly to easily magnify and observe details such as their oral cavity and face without moving their bodies. By pressing the arm on the top for heart rate monitoring, the intelligent control center projects the heart rate information monitored by the heart rate monitoring module onto the projection screen through the projection control module, enabling the elderly to easily observe their physical health status in real time.

A projection screen includes a substrate, a lower surface layer, an intermediate layer, and an upper surface layer. The lower surface layer is located on the substrate. The material of the lower surface layer includes acrylate, color paste or carbon black, and first-type particles. The intermediate layer is located on the substrate. The material of the intermediate layer includes acrylate and second-type particles. The upper surface layer is located on the substrate. The material of the upper surface layer includes acrylate and third-type particles. The lower surface layer, the intermediate layer, and the upper surface layer are stacked on the substrate in sequence. The materials included in the first-type particles, the second-type particles, and the third-type particles do not overlap with each other. The projection screen of the present invention can effectively suppress laser spot.