42 results about "Projective method" patented technology

The invention discloses a content projection system and a content projection method. The system comprises a fixation point detection device used for detecting a present fixation point position of eyes; an image generation device used for generating a virtual image in dependence on visualization information and the fixation point position; and a virtual image projection device used for projecting the virtual image to eye grounds in dependence on the fixation point position. In the system and the method provided by the embodiment, the fixation point position of a user can be detected in real time, imaging parameters of corresponding visualization information are obtained according to the fixation point position, furthermore the virtual image is generated and projected to the eye grounds, virtual figure information and real information can be fused better, and furthermore the user can obtain better immersion.

The invention discloses an image display method, a device and a system for transanal endoscopic microsurgery navigation. The image display method comprises the following steps of acquiring a CT imageand acquiring an endoscope image in real time; acquiring the position and the direction of the top end of an endoscope in real time; according to the position and the direction of the top end of the endoscope, performing the cube cutting on the CT image to obtain cut cube data; based on a distance-weighted light projection method, subjecting the cut cube data to differential rendering to obtain rendered cube data; subjecting the rendered cube data and the endoscope image to virtual-real fusion treatment to obtain a virtual-real fusion image; and displaying the image. The image display device and the system adopt the above image display method, wherein the image display in the operation navigation process is achieved.

The invention discloses a pattern projection system for a car. The pattern projection system is internally arranged in the car. A specific static colorful pattern or dynamic logo pattern can be projected onto the road surface in front of the car according to the actual traveling road condition of the car, so that the temporary traffic dispersion effect and the visual forewarning effect on the carand pedestrians are achieved; under the severe weather situation, the effects of assisting traffic and ensuring safe intersection of traveling cars are achieved; and in addition, after used, the pattern projection system is stopped, the road surface recovers as before, and application is flexible and convenient.

The invention discloses an image display method, an image display device and an image display system for endoscopic minimally invasive surgical navigation. The image display method comprises the following steps: acquiring a CT (Computed Tomography) image; registering the CT image and the position and pose of a patient; acquiring the position and the direction of the top end of an endoscope in realtime; acquiring the relative position between the endoscope and the body of the patient and the distance between the endoscope and a surgical target according to the position and the direction of thetop end of the endoscope and the registered CT image; orthogonally cutting the registered CT image in the directions which are parallel to and perpendicular to the endoscope according to the positionand the direction of the top end of the endoscope and the distance between the endoscope and the surgical target, and performing differential rendering on the orthogonally cut data based on a distance weighted ray projection method; displaying a view of the relative position between the endoscope and the body of the patient, and an orthogonally cut view. Both the image display device and the image display system adopt the image display method, and the image display in a surgical navigation process is realized.

The invention discloses a screen projecting method and a projecting target side device. The method comprises the steps that network connection between the projecting target side device and at least two data source side devices is established; the projecting target side device receives screen data sent by the data source side devices through the established connection; the received screen data sent by the data source side devices is displayed in display areas configured for the data source side devices in advance on a display screen of the projecting target side device. In this way, screen projections of a plurality of data source side devices can be displayed on the screen of one projecting target side device, and the user experience is improved.

The invention discloses a screen mirror image projection method of iOS equipment. The method comprises the following steps: simulating an Airplay server-side on the preset PC equipment based on an Airplay protocol; receiving screen mirror image data transmitted from the iOS equipment establishing the session with the Airplay server-side; performing real-time resolution on the screen mirror image data, thereby enabling the resolved screen mirror image data to display the corresponding screen mirror image to a display screen on the PC equipment; the screen image of the iOS equipment is effectively projected to the PC equipment not belonging to the Apple Inc. through the screen mirror image projection method of the iOS equipment, and meanwhile, the screen mirror image data projected on the PC equipment can be conveniently processed so as to execute the operations of various mirror images, the pictures, the audios and the videos. Furthermore, the invention further discloses a screen mirror image projection system of the iOS equipment, a device and a screen recording method.

The invention provides a media file protection method and device. The method comprises the steps of judging whether a media file is projected to a display device or not; when the media file is projected to the display device, obtaining indication information or labeling information of a user for the media file; transmitting the indication information or the labeling information to the display device so as to be synchronously displayed on the display device. According to the media file projection method and device, after the media file is projected to the display device, a user can explain and show the media file by indicating and labeling the media file, and therefore the interaction of the media file during projection is enhanced.

The invention discloses an eyeball tracking-based projection method and a related device, which are applied to an electronic device comprising a touch screen, a camera module and an augmented reality module. The method comprises the following steps of obtaining the motion information of the eyeballs through the camera module; determining a target object watched by eyeballs according to the motion information, wherein the target object is on a touch screen; obtaining the projection information of the target object, and determining a target projection position of the target object in a three-dimensional space according to the projection information; and projecting the target object on the target projection position through the augmented reality module. According to the embodiment of the invention, an object watched by the eyeballs can be projected into a three-dimensional space through an eyeball tracking technology and an augmented reality technology.

The invention provides a screen projection method and apparatus, and a terminal. The method comprises the steps of determining that a screen projection channel is established between the terminal anda display device; and according to preset triggering conditions, triggering the display device to send a control instruction, wherein the control instruction is used for controlling screen contents ofthe terminal to be projected to the display device, and the control instruction is sent by the established screen projection channel. Through the screen projection method and apparatus, the problem of poor flexibility of an existing screen projection mode in related technologies is solved, so that the effect of improving the screen projection flexibility is achieved.

The embodiment of the invention discloses an image remote projection method and a related device. The image remote projection method comprises the following steps: a server acquires N rendering instructions called by a local application of the server; the server determines rendering resources required for executing the N rendering instructions; the server generates a rendering sequence according to an execution sequence for executing the N rendering instructions by the local application, and transmits the rendering sequence and rendering resource determination information for determining the rendering resources to a client, wherein N is a positive integer, and the rendering sequence comprises the rendering instruction determination information for determining the N rendering instructions. According to the scheme provided by the embodiment of the invention, the occupation of network bandwidth by image remote projection is favorably reduced, and the user experience is improved.

The invention relates to a video projection method and apparatus. The method comprises: detecting a video projection event; when detecting the video projection event, determining a target device to be projected; and projecting video information provided by an underlying play module to the target device to be projected, for enabling the target device to be projected to play a video according to the video information. Therefore, the video projection method and apparatus provided by the invention can be not limited to special applications, and the video information provided by the underlying play module can be projected to the target device to be projected, so that the universality of video projection is improved, and the user experience is improved as well.

The invention relates to a human-computer interactive editing method for a segmentation result of volume data, belonging to the field of digital medical technology. The method includes steps: a triangular mesh model is generated and surface rendering is performed according to the segmentation result of volume data to be edited; volume rendering of volume data is performed; the results of volume rendering and surface rendering are mixed to get a unified view; the user mouse interaction is recorded to obtain the stroke line, and the light projection method is used to obtain the intersection of the extension surface and the volume data to obtain the cross-sectional mesh and display the volume data gray level; the section mesh intersects with the segmentation result mesh to obtain the intersection line; the section mesh is planarized with the intersecting lines, and the intersecting lines are edited on the 2D view; the optimization model of triangular mesh based on volume data gradient isestablished; according to the result of intersecting line editing, the objective function is decomposed and iteratively optimized, and the optimized triangular mesh vertex coordinates are obtained, which is the result of interactive editing. The method improves the segmentation precision and interactive editing precision of volume data.

A light projection method of optical mouse includes providing a light projection unit, entering projection light into light projection unit for forming the first light beam and the second light beam, projecting the first light beam to detection region of an image detection surface for picking up image on said detection region accurately, projecting the second light beam to said detection region obliquely to make bright - black contrast of convex and concave position on detection region more obvious for raising identification ability of image detection unit on detection region.

The invention provides an image processing method and device, an image projecting method and device, and an imaging system, and relates to an imaging solution, which is greater than the human eye vision. The image processing method provided by the invention comprises the following steps of: firstly, constructing an envelope cube taking an appointed observation point as the centre in a virtual scene; then, obtaining perspective picture screenshots that the observation point faces to various surfaces of the envelope cube; and finally, combining the perspective picture screenshots that the observation point faces to various surfaces of the envelope cube to form a shape matched with the shape of a pre-set imaging medium and a vision angle, so that a source image is obtained, wherein the shape of the imaging medium comprises a sphere or a part of the sphere, an oval or a part of the oval and a ring or a part of the ring. By means of the method, a non-planar source image matched with the imaging medium can be generated; and thus, the problem that the virtual reality realistic sense and immersion sense are poor due to the fact that the planar image is used as the source image currently can be solved.

The present invention discloses a mobile terminal picture projection display method, comprising the following steps of: establishing a communication connection between a mobile terminal and a cloud server-side, and establishing a communication connection between the cloud server-side and a display terminal. starting a mobile client of the mobile terminal, and selecting a to-be-sent picture; sending, by the mobile client, an display requesting instruction to the cloud server-side, and sending the picture; receiving, by the cloud server-side, the sent instruction and the sent picture; and after finishing reception of the picture, performing, by the cloud server-side, a projection operation, to display the picture on the display terminal. The to-be-sent picture is selected on the mobile client, and the mobile client obtains a local address of the picture according to the selected picture, and sends the picture to the cloud server-side in a stream manner according to the address; and the cloud server-side receives stream information sent by the mobile client, generates a picture file according to the stream information, and displays the picture file on the display terminal. The projection method of the present invention is easy and convenient in operation and has better user experience.

The invention provides a picture projection display method. The method includes: a mobile terminal and a receiving end are allowed to be in communication connection through a wireless network; a mobile terminal reads a selected to-be-protected picture and generates an MD5 value serving as a unique identification code; the mobile terminal transmits the identification code to the receiving end; the receiving end searches locally to find out whether the picture corresponding identification code exists or not locally, if so, the picture is directly displayed, and the mobile terminal is notified of the fact that the picture is found locally; if not, the mobile terminal is notified to transmit the to-be-projected picture to the receiving end. Compared with universal projection methods, the picture projection display method has the advantages that the projection speed is increased evidently, projection success rate is increased evidently, and projection smoothness is enhanced evidently.

The invention discloses a direct type optical projection system comprising a light source module configured to emit a collimated beam; a fly-eye lens configured to allow the collimated beam to enter from one surface of the fly-eye lens and exit from the second surface of the fly-eye lens, and to allow the collimated beam to be converged on the focal plane of the fly-eye lens to form lattice lighton the focal plane; and a telecentric projection lens group for allowing light emitted from the fly-eye lens to penetrate through the telecentric projection lens group, and allowing the light emittedfrom the telecentric projection lens group to form speckles or area arrays on an imaging plane. In addition, the invention also discloses an optical protection method comprising the following steps ofemitting the collimated beam; allowing the collimated beam to enter from the first surface of the fly-eye lens and exit from the second surface of the fly-eye lens, and to be converted on the focal plane of the fly-eye lens to form the lattice light on the focal plane; and allowing the light emitted from the fly-eye lens to enter and penetrate through the telecentric projection lens group, thus allowing the light emitted from the telecentric projection lens group to form the speckles or area arrays on the imaging plane.

A head mounted display (HMD) device and an image projection method are provided. The head mounted display device includes an optical waveguide device, an image device, an optical conversion layer anda processor. The optical waveguide device receives an image light beam and projects a projection image through a surface. The image device is used to provide the image light beam. The optical conversion layer is disposed overlapping the edge of the surface of the optical waveguide device. The optical conversion layer deflects a portion of the projection image to generate an adjusted projection image according to a command signal, so that the adjusted projection image is transmitted to a projection target. The processor generates the command signal according to a position of the projection target.