563 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.

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 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 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 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.

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.

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.

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.

The invention belongs to the field of projection display, and discloses a rear projection screen, which comprises an imaging layer, a black light absorption layer and a zigzag microstructure layer, the black light absorption layer is composed of a first black light absorption layer and a second black light absorption layer; the first black light absorption layer comprises a plurality of first black light absorption strips, the second black light absorption layer comprises a plurality of second black light absorption strips, and the first black light absorption strips and the second black light absorption strips are orthogonally stacked and arranged; the distribution distance between every two adjacent first black light absorption strips is increased or the distribution distance between every two adjacent second black light absorption strips is increased from the transverse center line / the vertical center line of the screen to the edges of the two ends. According to the rear projection screen, more projection light rays are absorbed in the central area of the screen and less or no projection light rays are absorbed in other areas by setting the distribution distance between the first black light absorption strips and the second black light absorption strips, so that the brightness difference between the central area of the projection screen and the other areas is reduced, and the brightness of the projection screen is improved. And the rear projection screen with high brightness uniformity is obtained.

This application provides a multi-device screen sharing method, apparatus, storage medium, and electronic device. The method, applied in the field of computer technology, includes: acquiring a main projection screen sent by a master device and displaying the main projection screen on a screen; if a non-main projection screen sent by a non-master device is acquired, ending the display of the main projection screen and displaying the non-projection screen on the screen; if a reverse screen sharing command is received, recording the display screen on the screen and sending the display screen to the master device so that the master device displays the display screen. This method can avoid display errors such as picture-in-picture during the return of the main device's projection screen when a non-master device projects, and also avoids echo errors in multi-device projection, thereby improving the effect of multi-device screen sharing.

A projection screen system with a housing having a t-slot defined in the top wall for operably engaging a motor end bracket and a pin end bracket. The motor end bracket has a motor case mount assembly connected with a motor mount assembly and a support assembly. The motor mount assembly attaches a motor assembly, and at least one end of the support assembly can be swung to an unengaged position to allow removal of the motor mount assembly for maintenance or replacement. The pin end bracket has a pin case mount assembly connected with a bearing mount assembly via horizontal swinging hinges, enabling the bearing mount assembly to swing outward to accommodate installation and removal of the roller. The bearing mount assembly can have a ramp that guides a pin of a screen roller into an aperture during installation.

The invention relates to a projection unit for a field of vision display device for superimposing a virtual image via reflection on a reflective screen, in particular a vehicle windshield, arranged in the field of vision of a user. The projection unit comprises a projector-based imager with a projector for generating a beam of light with the desired display content and a projection screen illuminated by said beam. The projector is designed to generate a real image on the projection screen and the projection screen is designed to reflect the resulting light beam to the reflective screen. For this purpose, the projection screen has a transparent substrate facing the projector and with a mirror surface formed on its rear side, which is made up of a plurality of facets to form a facet grid with a sawtooth profile. Each facet has a first mirror segment for the directed guidance of the light beam into an eyebox predetermined for the eyes of a first user.

The invention relates to the technical field of microscopic imaging, and provides a microscopic imaging method and system based on a transmission-type relay projection screen, and the method comprises the steps: S1, enabling a laser to emit a light beam to irradiate a sample, and enabling the diffraction light of the sample to be projected to the transmission-type relay projection screen; s2, shooting the transmission-type relay projection screen on the other side of the transmission-type relay projection screen, and recording a power spectrum image of the sample; wherein the laser, the sample and the shooting camera are on the same axis, and the axis is perpendicular to the transmission-type relay projection screen; and S3, reconstructing the power spectrum image of the sample to obtain a target reconstructed image. The scheme has the characteristics of coaxial arrangement, simple structure, easy integration, long working distance, large depth of field, wide field of view and high resolution, can effectively reduce perspective distortion, and is convenient to combine with other technologies. The system does not need scanning measurement or wavefront modulation, so that the cost, complexity and operation difficulty of the system are reduced.

The utility model provides a projection screen, which belongs to the technical field of screens and comprises a screen (10) and a base (20), the screen (10) comprises a first rounded rectangular frame (101), a curtain frame (102) and a curtain (103), the base (20) comprises a second rounded rectangular frame (201) and a base cloth piece (202), the second rounded rectangular frame (201) is sewn in the outer edge of the base cloth piece (202), and the curtain frame (102) is sewn in the outer edge of the base cloth piece (202). The base cloth piece (202) is in the shape of a rounded rectangular sheet, the opposite edges of the screen (10) and the base (20) are respectively sewn with hook-and-loop fasteners which are mutually adhered, the opposite edges of the screen (10) and the base (20) are detachably connected through the hook-and-loop fasteners, and the screen is simple in structure, convenient and fast to mount or dismount, small in size after being dismounted, folded and stored, and convenient to transport and carry.

The present application discloses a projection device, belonging to the field of optoelectronic technology. The projection device includes a light source, a light valve, and a lens, a first convex lens, a first diffuser, a second convex lens, and a light homogenizing component located in the light path between the light source and the light valve; the focal points of the first convex lens and the second convex lens coincide with each other, and the coincident focal point is located between the first convex lens and the second convex lens; the first diffuser is located at the focal point; the first convex lens is used to converge the light emitted by the light source to the first diffuser, the first diffuser is used to expand the divergence angle of the incident light and then direct it to the second convex lens, the second convex lens is used to direct the incident light to the light homogenizing component, and the light homogenizing component is used to homogenize the incident light and then direct it to the light valve, and the light spot area on the first convex lens is larger than the light spot area on the second convex lens. The present application solves the problem of poor display effect of the projection screen of the projection device. The present application is used for projection.

The present application discloses a projection device, belonging to the field of projection technology. The projection device includes: an optical engine and a projection screen; the projection screen includes a base, a control mechanism, a screen, guide rollers, a transmission mechanism, and a drive motor; the control mechanism is fixed to the base and is used to support the screen; the base has two first guide grooves positioned opposite each other, the two ends of the guide roller are respectively located in the two first guide grooves, the transmission mechanism is rotatably limited on the base, and the drive motor is fixed to the base, the output shaft of the drive motor is connected to the transmission mechanism, and the transmission mechanism is also connected to the guide roller. In the embodiment of the present application, the drive motor can drive the guide roller to move within the first guide groove through the transmission mechanism, so that the guide roller can push the screen to achieve the purpose of limiting the pitch angle of the screen, thereby correcting the position of the screen and avoiding distortion, blurring, and distortion of the image displayed on the screen, thereby improving the display effect of the projection screen.

The application discloses a vehicle projection curtain device capable of freely hovering, which comprises a motor, a shaft coupling, a lead screw, a moving nut, a moving block, a connecting block, a sliding bearing, a first supporting arm, a second supporting arm, an upper fixed sliding groove, a lower following sliding groove, an electromagnet and a travel switch; the motor is used for driving the rotation of the lead screw, the rotation of the lead screw drives the horizontal movement of the moving block and the sliding bearing, the rotary motion output by the horizontally placed motor is converted into the horizontal motion of the sliding bearing, so as to drive the first supporting arm and the second supporting arm to realize the function of staggered opening, stretching and shrinking the curtain. The application has the advantages of small noise, stable motion and self-locking by using the lead screw transmission, the cross arm structure and the electromagnet, and can realize the free hovering of the curtain at any position without unstable phenomenon caused by the motion of the vehicle. The application provides a new reference scheme based on the existing vehicle projection curtain device, and has good use value and application development prospect.