34 results about "OpenGL" patented technology

The invention relates to a method for dynamic sea surface laser pulse wave beam echo simulation. The method for dynamic sea surface laser pulse wave beam echo simulation comprises the following steps that according to a sea spectrum statistic model, a dynamic sea surface is generated by means of the reverse-FFT technology, and the parameters such as the wind speed, the wave height and the sea wave period are considered through the model; space energy distribution and the pulse shape of each emitted laser wave beam are measured, space-time distribution of any laser wave beam is obtained through fitting, and section spatial light intensity distribution at any distance is determined based on energy conservation; a laser radar wave beam back scattering echo radar equation is established based on the radiometry, rough surface processing is conducted on a water surface element, and the water surface element is expressed through a bidirectional reflection distribution function; drawing, coloring, rendering, real-time animation, hidden-line elimination and clipping of the scene are completed based on a computer graphic base OpenGL. The method for dynamic sea surface laser pulse wave beam echo simulation can be applied to different sea condition model machine dynamic intersection virtual experiments, facilitate development of sea surface pulse echo scattering mechanism study, and save a large amount of cost.

The present invention discloses a vehicle all-round multi-view panorama generation method based on an OPENGL. The method comprises the steps of: collecting images comprising special calibration objects by employing four fish-eye cameras respectively installed at the front and back sides and the left and right sides of a vehicle, employing a DLT (Direct Line Transformation) to calculate coordinatesystems of the four cameras and a homograph matrix H of a world coordinate system, and obtaining an Euler angle and a translation vector between the coordinate systems of the four cameras and the world coordinate system through Rodrigues transformation; on this basis, taking vehicle and ground projections as a center to build a flat-bottom bowl model, employing calibrated inner and outer parameters of the cameras to determine a mapping relation of key points in the model and pixel points in fish-eye camera images, mapping texture of each original image onto the flat-bottom bowl model in real time; and finally, controlling movement of a virtual observation camera according to an assigned path, and performing real-time rendering of the scene to obtain an observation result. The vehicle all-round multi-view panorama generation method based on the OPENGL can effectively solve the problem that a traditional 2D panorama distant object is severely stretched, and has good immersion.

Provided is a satellite orbit gesture visual three-dimensional displaying method. The satellite orbit gesture visual three-dimensional displaying method comprises the steps: (1) building a three-dimensional model, reading a 3DS model in a database, checking whether models are complete or not, sending the 3DS model to a state display if the models are complete, and if the models are not complete, building relevant models, and sending a data request data package to a server and receiving the data request data package at the same time; (2) checking and comparing data in the data package, finding out data needed by the state display, analyzing the data, and dividing the data into two parts, wherein one part of data are ground equipment data, and the other part of data are on-star remote sensing data; (3) for the ground equipment data, extracting time information, calculating sun and moon ephemeris, and calculating the positions of the sun, the earth and the moon, satellite orbit data and the like to be sent to the state display; (4) for the on-star remote sensing data, classifying the data into three types to be displayed, wherein one type of data are health state data, one type of data are component power source state data, and another type of data are gesture information. The state display adopts the OpenGL to carry out three-dimensional model drawing and display.

The invention discloses a cloud rendering three-dimensional visualization implementation method, relates to the technical field of three-dimensional visualization, and is used for solving the problemthat an existing three-dimensional GIS has high requirements on client equipment. The method comprises the following steps: creating a three-dimensional GIS service based on OpenGL and loading three-dimensional data; dynamically generating a real-time picture by frame rendering according to the three-dimensional data; and converting the real-time picture into a video stream and sending the video stream to a client, so that the client renders an HTML5 interface of the client according to the video stream. The invention also discloses a three-dimensional visualization realization system. According to the method, the three-dimensional GIS is created based on the OpenGL, the three-dimensional GIS picture is synchronized to the client through video stream compression, rendering is carried out through the cloud, the high-simulation three-dimensional visualization effect is achieved, and the requirement for the performance of client equipment is lowered.

The embodiment of the invention provides a method and a device for showing a label page in multi-window. The method comprises the steps as follows: obtaining a showing instruction about the multi-window; determining a root window corresponding to the multi-window under a view window of a browser and a locating window under the root window, wherein the root window and the locating window are initialized and generated for performing a showing process of the label page in the multi-window for the first time after the browser is started, and the root window is a render window GLSurfaceView which is used with OpenGL in a matching manner; obtaining a headline and content screenshot of the label page currently existed in the browser; obtaining texture data of the headline and texture data of the corresponding content screenshot, which are generated via a CPU; drawing the texture data of the headline and the texture data of the corresponding content screenshot to the locating window under the root window through calling the OpenGL. The solution of the invention can be used for simplifying the multi-window showing process and improving drawing speed.

The invention discloses a drawing-type-work reviewing method based on an augmented reality technology. The method includes the following steps: using a mobile terminal as a client to obtain image frames and sending data to a server side and receiving data from the server side and displaying the data; receiving video frame data transmitted by the client and processing images through an image processing related algorithm; sending standard answer view models and reference grades obtained through calculation to the client; the client rendering the models to the video frames through an OpenGL after receiving the data sent by the server side and displaying the reference grades through superposition of layers so as to achieve a virtual-real fusion confusion effect. The drawing-type-work reviewing method based on the augmented reality technology assigns a drawing work reviewing task to computer vision which is combined with the augmented reality technology and transplants functions to the mobile terminal for realization so that great convenience and fun are brought to reviewing teachers.

The invention provides a vehicle-mounted graphical interface system based on QML+OpenGL. The system involves the following steps that S1, an access user interface definition state is initialized; S2, a mouse responding region is arranged by means of a mouse region control piece, and different states are switched; S3, whether the states meet the triggering condition or not is judged, the states are activated till the triggering condition is met; S4, transition elements are added to trigger action; S5, script changes are called to execute the action, QML and OpenGL languages are used, a vehicle-mounted graphical interface is defined by defining the state and adding the transition elements, the attributes of state elements are modified by means of attribute changes, the mouse responding region is arranged by means of the mouse region control piece, elements attributes can be changed, and the states can be changed at the same time; cartoons are added to the elements by means of attribute changes, the cartoon effect is displayed by means of a data type and a view list, transition changes are expanded by means of the cartoon and visual effect, and we can be helped to check that all functions are covered.

The invention discloses a motor-driven intelligent running machine and a design method for a control procedure thereof. The running machine comprises a running machine main body, a touch control plate, a computer, a motion parameter detecting sensor, a servo controller and a colorful display, wherein the computer is respectively connected to the touch control plate, the servo controller and the colorful display; the servo controller is respectively connected to the motion parameter detecting sensor and a running belt on the running machine main body; and a virtual live-action system is set up in the computer. The method comprises the steps of setting a selective interface of the touch control plate, loading a field, starting the motion parameter detection and invoking an API drawing object of an OpenGL. The virtual live-action system is added in the invention, so as to bring a feeling of being personally on the scene to the exerciser and achieve pleasure mood and high efficiency of doing exercise. The motion parameter detecting sensor is added in the invention, so the exerciser can know the excising effect at real time and adjust the exercising intensity.

The invention relates to the field of embedded technologies, and provides a video processing method and device, an embedded device and a storage medium. The embedded device comprises an OpenGL and anEGL interface and is provided with a camera shooting device. The method comprises the following steps of acquiring an original video acquired by the camera shooting device; storing the original videointo a pre-established video buffer area; acquiring a first image from the video buffer area, wherein the first image is any frame of image in the original video; and utilizing the OpenGL to process the first image in order to obtain a processed original video. According to the embodiments of the invention, the original video is stored in the pre-established video buffer area, so that the OpenGL can directly process the original video in the video buffer area, the time delay of video processing is eliminated, and the video processing efficiency can be remarkably improved.

The invention belongs to the field of computer graphic processing, and specifically relates to an OpenGL-oriented attribute configuration optimization method. The method includes following steps: (1)OpenGL graphic command acquisition; (2) graphic command parameter extraction and classification; (3) parameter processing and updating; (4) parameter re-configuration; and (5) parameter information storage. According to the method, the calculation of effective parameters is accelerated, rapid and continuous configuration of related parameters can be realized, and the configuration process of an OpenGL graphic command and a GPU graphic attribute is improved.

The invention discloses a method of realizing virtual reality based on an Android system, a terminal and a system. The method comprises steps: a Surface Flinger program is called, and a to-be-displayed image is acquired; OpenGL is called to render the to-be-displayed image; a user head action is acquired through a sensor to obtain a perspective matrix for the left eye and the right eye of the user, and texture corresponding to the to-be-displayed image is obtained; and the texture corresponding to the left eye and the right eye are drawn on a left-side screen and a right-side screen respectively through the OpenGL. No special virtual reality application needs to be downloaded but the virtual reality can be realized through the display terminal with the Android system, the cost is low, and the application range is wide.

The embodiment of the invention relates to a radar information display method and a system based on an OpenGL, and a storage medium. The method comprises: creating a plurality of video memory spaces in a video memory based on the OpenGL; converting the obtained initial radar information to obtain target display information; updating the target display information to a target memory space through the OpenGL, wherein the plurality of video memory spaces comprise the target memory space; and rendering the target display information through the OpenGL to display the target display information. According to the technical scheme provided by the embodiment, on the one hand, the technical disadvantage of the prior art that the radar information display is not flexible is avoided; on the other hand, the technical effect of displaying radar information with high efficiency is realized, and the technical effect of the cross-platform display mode of radar information is realized.

The invention discloses a fetus panorama display method based on an ultrasonic and 3D technology. The method comprises the following steps of image or data obtaining, wherein cross-section image sequences of a fetus are obtained through a B-mode ultrasound probe; image preprocessing and segmenting, wherein the image sequences are subjected to operations like image strengthening, filtering and noise reduction, and a three-dimensional division method based on a maximal interclass variance method is adopted to automatically segment an image area of the fetus; surface reconstruction of a three-dimensional object, wherein according to the preprocessed image sequences, a slice-based method of using a two-dimensional profile line to reconstruct a three-dimensional shape is adopted for three-dimensional reconstructing, and meanwhile, the sex characters of the fetus are removed; arm motion identification, wherein an MYO armlet is utilized to identify the arm motion like leftward motion, rightward motion, upward motion and downward motion, and thus the operations like rotating and turning of the built three-dimensional model can be controlled. An OpenGL is adopted for displaying the reconstruction result, and the three-dimensional model is operated through the further utilization of the identification result of a wristband. By means of the fetus panorama display method based on the ultrasonic and 3D technology, the arm motion identification is applied to 3D panorama displaying of the fetus, and the three-dimensional interaction result can be more visual and convenient.

The invention provides a Web-end three-dimensional GIS (geographic information system) software design method with geographic spatial data confidentiality. The method comprises the following steps that: a client applies for server resources from a three-dimensional GIS cloud service resource scheduling center, and the resource scheduling center allocates idle servers to the client; the client sideresponds to mouse and keyboard operation of the user and encodes the corresponding operation message to obtain an encoded control flow message, and then the encoded control flow message is sent to the server side; the server decodes the received encoded control flow message; the method comprises the following steps: receiving space data, decoding the space data, executing a corresponding functionaccording to operation information of a mouse and a keyboard obtained after decoding, rendering a three-dimensional scene corresponding to the space data into a two-dimensional image, converting thetwo-dimensional image into a corresponding video stream, and sending the video stream to a client to prevent data leakage caused by sending real space three-dimensional data to the client; the serverside is provided with an image buffer area compatible with the OpenGL and the Directx. The method has the advantages that data leakage is effectively avoided, and graphics card resources are reasonably utilized.

The embodiment of the present invention discloses a method for realizing the depth of field effect based on OpenGL. The method includes the following steps: acquiring the original color buffer information of the image, the original color buffer information including depth buffer information and color buffer information; Calculate new color buffer information from the buffer information and the color buffer information; calculate the Poisson distribution circle diameter of the pixels of the image, and calculate the image level information according to the Poisson distribution circle diameter of the pixels; calculate the image level information according to the original color The buffer information, the new color buffer information, the diameter of the Poisson distribution circle of the pixels and the image level information calculate the final color buffer information and render the image. In the embodiment of the present invention, by combining the OpenGL-based Mipmap principle with the Poisson distribution, image scene information of different levels is calculated to realize the depth of field, which improves the efficiency and effect of realizing the depth of field.

The invention relates to a method for dynamic sea surface laser pulse wave beam echo simulation. The method for dynamic sea surface laser pulse wave beam echo simulation comprises the following steps that according to a sea spectrum statistic model, a dynamic sea surface is generated by means of the reverse-FFT technology, and the parameters such as the wind speed, the wave height and the sea wave period are considered through the model; space energy distribution and the pulse shape of each emitted laser wave beam are measured, space-time distribution of any laser wave beam is obtained through fitting, and section spatial light intensity distribution at any distance is determined based on energy conservation; a laser radar wave beam back scattering echo radar equation is established based on the radiometry, rough surface processing is conducted on a water surface element, and the water surface element is expressed through a bidirectional reflection distribution function; drawing, coloring, rendering, real-time animation, hidden-line elimination and clipping of the scene are completed based on a computer graphic base OpenGL. The method for dynamic sea surface laser pulse wave beam echo simulation can be applied to different sea condition model machine dynamic intersection virtual experiments, facilitate development of sea surface pulse echo scattering mechanism study, and save a large amount of cost.

The invention discloses a method and system for realizing image zooming by utilizing OpenGL and OpenCL cooperation, relating to the technical field of image zooming. The image zooming method comprises the following steps of: creating a context environment mutually operated with OpenGL in OpenCL equipment; according to the dimensionality of an image to be zoomed, creating two OpenCL image objects having corresponding dimensionalities respectively from two OpenGL textures having corresponding dimensionalities by utilizing the created context environment, wherein in two created OpenCL image objects, one represents an input source image; the other represents a target image; zooming the created source image through a bilinear interpolation algorithm of the image, and writing a processing result in the target image; and displaying the zoomed target image by calling a drawn texture interface having the corresponding dimensionality in the OpenGL. By means of the method and the system disclosed by the invention, zooming of relatively-high-resolution images can be completed at relatively high efficiency; the operation efficiency is high; and the processing effect is good.

The invention discloses an OpenGL-based binocular night vision imaging simulation method and system. A computer loads the imaging simulation method to generate an image on a pair of binocular night vision goggles. The method comprises the following steps of S1: building a three-dimensional scene model used for simulating an environment; S2: calculating a low light radiation value of each object model in a set environment to generate a low light radiation image; S3: according to position data of the head of a wearer, adjusting a visual position and a visual angle of the low light radiation image; S4: performing rendering processing on the low light radiation image by utilizing a shader algorithm to obtain a low light night vision goggle image; and S5: performing first adjustment on the lowlight night vision goggle image to form a first image presented in a left eyepiece, and performing second adjustment to form a second image presented in a right eyepiece, wherein the first adjustmentand the second adjustment are same in value and opposite in direction. The simulated image with the equivalent effect under the observation of a binocular night vision imaging system can be presentedin real time; and the simulated image is stable and reliable in quality.

The invention relates to a music fountain simulation system based on OpenGL. The system is characterized by comprising a music feature extraction unit which carries out feature extraction of music, and selects a proper feature vector to represent a song; a music characteristic signal fusion unit; a music fountain simulation software background which uses a particle system based on OpenGL; a musicfountain control foreground. Software on the market at present is software based on specific music, and picture making is very simple; however, the OpenGL is used for background design in the invention, fountain effect is simulated, and an interface is provided for the outside to allow a user to call the fountain effect. A music analysis part is introduced into the whole system, so the characteristics of newly added music can be analyzed, and actions can be selected and displayed according to characteristic parameters.

The invention discloses a real-time flood disaster visual simulation method based on an OpenGL. A multi-phase fluid interaction simulation method combining a fluid simulation method based on texture change and a fluid simulation method based on a two-dimensional height field comprises the steps that firstly, the evolution of a flood water surface and the rolling effect of a cloud layer in the skyare achieved through the double-cache technology of OpenGL; then, particles in all the models are solved through a hydrodynamic equation, and a random process is established and used for generating rain and snow particles and controlling irregular movement of the particles; and finally, a three-dimensional simulation terrain is generated by using the grey-scale map file, and a terrain scene basedon real data is created. Real-time visual simulation based on real terrain data is carried out on flood disasters, and the sense of reality of the simulation effect is improved.

The invention discloses a three-dimensional human body modeling method based on OpenGL and deep learning. The method comprises the following steps: extracting a human body image in a two-dimensional image through a deep learning model Mask R-CNN, and reconstructing a personalized three-dimensional human body model through the combination of OpenGL and a standard 3D human body model. The method comprises the following steps: firstly, segmenting a human body image in a two-dimensional image by adopting a Mask R-CNN deep learning model; and then extracting main features of the human body contourobtained after segmentation, finally mapping the features of the human body contour image to a three-dimensional standard human body model established by 3d-max by using OpenGL, and quickly constructing a three-dimensional human body model in the OpenGL. The method is fast in image processing and high in model generation efficiency.

The invention discloses a method and a device for drawing a user interface by using OpenGL and a mobile terminal. The method comprises the steps of transferring a matrix operation interface; obtaining a position parameter of a painting element of the matrix operation interface; obtaining position information of the painting element according to the matrix operation interface; and drawing the user interface according to the position information of the painting element, wherein the matrix operation interface is a preset interface for substituting the position parameter into matrix transformation to calculate the position information of the painting element relative to a reference coordinate origin. According to the method and the device and the mobile terminal, matrix operation when the user interface is drawn by using the OpenGL is transformed into direct transferring of the matrix operation interface, so that a developer does not need to carry out complicated matrix operation, and the development difficulty can be reduced.

The invention relates to an OpenGL-based transparent object delayed rendering method, which relates to the technical field of delayed rendering, and comprises the following steps of: when rendering a transparent object, firstly, arranging rendering numbers of the transparent object according to the sequence of transparency from small to large, and rendering according to the sequence of the numbers; for the objects with the same transparency, determining the arrangement rendering numbers of the objects according to the object texture complexity; after the arrangement rendering numbers of the objects are determined, adjusting the arrangement rendering numbers of the objects according to the rendering contour areas of the objects; when the arrangement rendering numbers of the objects are adjusted, rendering the objects; and correcting the adjusted object arrangement rendering number according to the color depth of the object. The method is not influenced by the number of light sources in a scene when rendering the transparent object, and the rendering sequence of the transparent object is controlled by , so that the rendering efficiency of the transparent object is effectively improved.

The invention relates to a graph conversion method and device, a storage medium and electronic equipment, and the method comprises the steps: converting a vertex coordinate in an original graph into atarget vertex coordinate through a preset operation logic, and the preset operation logic is an operation logic stored through a GPU or a CPU; establishing a mapping relationship between the plurality of vertex coordinates and the plurality of target vertex coordinates; Graph data of the original graph are processed; wherein the plurality of target vertex coordinates and the mapping relationshipare used as input of a graphic rendering pipeline provided by an OpenGL in the GPU; and converting the original graph into a target graph corresponding to the plurality of target vertex coordinates through a graph interpolation algorithm, wherein the graph interpolation algorithm is a graph interpolation algorithm determined by the graph rendering pipeline according to the preset operation logic.According to the mapping relation between the vertex coordinates, the graph data of the original graph can be directly converted into converted graph data to be output through the graph interpolationalgorithm built in the OpenGL, and the workload of graph conversion is reduced.

The invention relates to the technical field of LOD model construction, and provides an LOD model automatic switching method and device, electronic equipment and a storage medium, and the method comprises the steps: determining a target body obtained after zooming or moving in a current visual window, and building a bounding box corresponding to the target body; calculating a display pixel value of the bounding box on the visual window according to the pixel value of the projection of the bounding box on the visual window; selecting an LOD model matched with the bounding box according to the display pixel value of the bounding box on the visual window and a preset matching rule; and calling a glBuffer Data interface of the OpenGL to transmit the determined LOD model to a display card so asto render a target body obtained after zooming or moving. According to the invention, during real-time rendering, the model with the corresponding accuracy can be selected for rendering according tothe switching parameter corresponding to the size of the current target body model.