52results about How to "Improve projection efficiency" patented technology

Device (1) for projecting an image into a display area (2), with an imager (31) generating the picture, a first projection device (30) for generating a real intermediate image (R), a screen (5) onto which the first projection device (32) projects the intermediate image (R) and to a second projection device (9) projecting the intermediate image (R) into the display area (2). In order to project the image with the least possible loss of brightness, the invention provides that main beam directions (H, H′, H″) of the screen (5) point into an entrance pupil (20) of the second projection device (9).

The invention provides an electro-optical device capable of improving a high light projection efficiency to the outside while maintaining sealing ability for providing high recognition of vision. An organic electroluminescence display can include a light permeable substrate, and an organic electroluminescence element having a luminous layer and positive hole transfer layer interposed between a pair of electrodes. Additionally, a low refractivity film having a lower refractivity than the substrate, and a seal layer for blocking the air from invading from the substrate side to the organic electroluminescence element are laminated between the substrate and electrode of the organic electroluminescence element.

The embodiment of the invention discloses an interactive video projection method and device, equipment and a storage medium. The method comprises the steps of determining the initial position postureof the camera in the virtual scene according to the video frame shot by the camera; rendering the three-dimensional map based on the initial position posture; obtaining a two-dimensional picture corresponding to the shooting range of the camera in the initial position posture; performing feature matching on the two-dimensional picture and a video frame shot by a camera; determining three-dimensional feature points, corresponding to the two-dimensional feature points on the video frame, in the three-dimensional map after matching is completed; determining a camera pose matrix, focal length information and/or distortion parameters through a pose solving algorithm; and setting a camera in the virtual scene according to the above information, and adding the video frame into the rendering pipeline for video projection, thereby realizing semi-automatic interactive rapid video projection mapping without manually and accurately configuring camera parameters by a worker, and improving video projection efficiency.

The invention discloses a projection method which is used for simplifying the projection operation process. The method comprises the steps of determining to-be-projected contents; determining first projection contents and second projection contents which are contained in the to-be-projected contents, wherein the first projection contents are projection contents projected through a first electronic device, the second projection contents are projection contents projected through a second electronic device, the first electronic device is a wearable electronic device, and/or the second electronic device is a wearable electronic device; projecting the first projection contents through a first projection module, and sending a request message to the second electronic device, wherein the request message is used for indicating the second electronic device to project the second projection contents. The invention further discloses the corresponding electronic devices.

The invention discloses a method for correcting an intersecting line of an unstructured Cartesian grid. The method comprises the following steps of: describing the shape of an object to generate a background grid; setting grid generation parameters; generating an n-ary tree structure according to the background grid and the set parameters; deleting units within the shape of the object and units intersected with the shape of the object to generate a saw-toothed inner surface; fairing the saw-toothed inner surface to obtain a faired inner surface; performing intersecting line correction and projection on the faired inner surface; and calculating a grid flux, and outputting grid information. The problem of object surface distortion possibly caused by the steps of fairing, projection and the like when the grid is generated in computational fluid mechanics is solved, and a finally generated computational grid object surface can be ensured to be approximate to an original object shape in an intersecting line inverse projection and correction way.

This shot treatment device (10) is provided with: a holding jig (14) that is capable of rotating and sliding, and that holds a workpiece (12) on the axis of rotation; and a pair of centrifugal projectors (22, 24). The pair of centrifugal projectors: (22, 24) each have a rotatable impeller (60), the axis of rotation (A) of each impeller (60) being parallel to each other; are positioned offset to each other in the direction of the axes of rotation of the impellers (60); and are capable of projecting a projection material in parallel towards the workpiece (12) according to the rotation of the impellers (60). Since the offsetting of the projection material from one centrifugal projector (22) and the project material from the other centrifugal projector (24) is minimized by this configuration, the projection efficiency can be improved even when the projection material is projected from the pair of centrifugal projectors (22, 24).

The invention provides a 3D printer applied to high-solid-phase ceramic slurry. The 3D printer applied to the high-solid-phase ceramic slurry comprises a supporting assembly, a DLP projector and a scraper assembly, wherein a printing platform capable of moving up and down is arranged in the supporting assembly; the DLP projector is arranged on the supporting assembly and located at the position above the printing platform; the scraper assembly is arranged between the printing platform and the DLP projector in a horizontal moving manner; and the scraper assembly is used for smearing the slurryon the printing platform in a scraping manner, and the DLP projector is used for downward projection and curing of the slurry on the printing platform. The 3D printer applied to the high-solid-phase ceramic slurry has the beneficial effect of increasing the printing finished product rate of the high-solid-phase ceramic slurry.

The invention belongs to the technical field of mechanical manufacturing, and discloses a mechanical manufacturing display auxiliary system. The mechanical manufacturing display auxiliary system comprises a scanning module, a parameter configuration module, an operation input module, a main control module, a structure identification module, a lighting module, a three-dimensional model constructionmodule, a data storage module and a three-dimensional projection module. The system of the invention realizes the real-time automatic point cloud registration by using a function interface provided by Microsoft KinectFusion through a three-dimensional model construction module, greatly shortens modeling time, and finally the precision of the obtained model can meet general requirements. At the same time, the process of constructing three-dimensional projection image by three-dimensional projection module and the process of outputting three-dimensional projection image can be carried out simultaneously and in real time, and the redundant data access is reduced by line buffer segmentation, so that the three-dimensional projection efficiency is improved, the mechanical manufacturing productsare displayed more intuitively and stereoscopically, and the display effect is good.

The invention provides a projection method and device. The method and the device are applied to a first terminal. The first terminal comprises a general purpose input/output GPIO. A projection sending end is arranged on the first terminal. When the first terminal is in a power-on state and a second terminal connected with the first terminal satisfies a preset state switch demand, the GPIO is controlled to output electrifying signals, thereby electrifying the projection sending end and a projection receiving end on the second terminal; after the projection sending end and the projection receiving end are electrified, the GPIO is controlled to output a paring signal, thereby pairing the projection sending and the projection receiving end; and after pairing is carried out successfully, the second terminal receives and outputs a video signal sent by the first terminal, thereby carrying out projection display. According to the method and the device, the problem that in the prior art, physical switches are arranged for the first terminal and the second terminal, and the first terminal and the second terminal only can be paired by pressing the two physical switches at the same time is avoided; on the basis of realizing a projection technology, the material cost required by realization of the projection technology is reduced; and the projection efficiency is improved.

The invention discloses a registration method, device and equipment for a multi-view medical image, relates to the technical field of medical images, and provides a method for registering the multi-view medical image by using densely sampled image features in an effective area of projection, thereby reducing the loss of 3D space information in a perspective projection process and improving the registration efficiency. The method comprises the following steps: acquiring a feature image of a reference image and a feature image of a floating image, determining an effective area of perspective projection according to the feature image of the reference image, and performing projection on the feature image of the floating image by using the effective area of perspective projection to obtain at least one two-dimensional projection image; performing registration by moving the floating image, and calculating the similarity measure of registration for the current spatial position of the floating image by using the at least one two-dimensional projection image in the registration implementation process; and if the registered similarity measure meets a preset condition, outputting a registered rigid transformation result according to the current spatial position of the floating image.

The invention discloses a multi-frequency-structured-light-based three-dimensional measuring device and a method thereof. The three-dimensional measuring device mainly comprises a carrying platform, asupporting rod, a fastening support, an X-axis sliding rail, a Y-axis sliding rail, a grating projector, a camera and a collecting device for collecting an image of a measured object. In addition, the measuring method mainly includes the following steps: S11, calibrating a mechanical position of the imaging system; S12, calibrating equipment; S13, calculating internal and external parameters of the camera and the grating projector; S21, triggering the camera to collect the image; S22, carrying out phase unwrapping; S23, registering left and right projection data; and S24, performing three-dimensional reconstruction according to a point cloud. According to the invention, with a high-frame-rate DLP projector, the sinusoidal precision of the projection grating can be effectively improved andthe projection efficiency of the grating can be enhanced. Besides, the three-dimensional coordinate of the object is calculated by using the four-step phase shift and five-frequency iterative algorithm, so that the precision can be improved to be 0.005 mm.

The present invention is a side plate unit (10) used in a centrifugal projector (1) which projects projection material (2) toward a processing target by rotating a plurality of blades (3), and the side plate unit (10) being provided to attach the plurality of blades thereto, the side plate unit (10) comprising: a pair of side plates (11); and a joining member (12) for joining the pairs of side plates; wherein guide channel portions (13) are respectively formed on mutually opposing surfaces of the pair of side plates (11); and the side plate guide channel portions (13) are formed to be pitched so that the radial outer side thereof is positioned to a rear in the rotational direction (R1) compared to the radial inner side thereof.

A scaffold that is quick and easy to assemble while still implementing safety measures. The scaffold can include end caps that resist or prevent users from falling off the ends of the scaffold. The end caps are quickly assembled to the scaffold with a removable rod and pin mechanism. Moreover, to prevent a user from falling off the front or back of the scaffold, a pole and a mid-rail connector can be connected to the scaffold across the front or back, respectively, between an upper barrier and a lower platform. The pole can be inserted through connectors that are coupled to the scaffold, and can also be connected to mid-rail brackets for additional structural stability.