320 results about "Virtual cinematography" patented technology

A method and apparatus for directly sensing both the focused image and the three-dimensional shape of a scene are disclosed. This invention is based on a novel mathematical transform named Rao Transform (RT) and its inverse (IRT). RT and IRT are used for accurately modeling the forward and reverse image formation process in a camera as a linear shift-variant integral operation. Multiple images recorded by a camera with different camera parameter settings are processed to obtain 3D scene information. This 3D scene information is used in computer vision applications and as input to a virtual digital camera which computes a digital still image. This same 3D information for a time-varying scene can be used by a virtual video camera to compute and produce digital video data.

What is disclosed is a computer-implemented image-processing system and method for the automatic generation of video sequences that can be associated with a televised event. The methods can include the steps of: Defining a reference keyframe from a reference view from a source image sequence; From one or more keyframes, automatically computing one or more sets of virtual camera parameters; Generating a virtual camera flight path, which is described by a change of virtual camera parameters over time, and which defines a movement of a virtual camera and a corresponding change of a virtual view; and Rendering and storing a virtual video stream defined by the virtual camera flight path.

The present invention discloses a camera positioning correction calibration method and a system for realizing the method, belonging to the technical field of image virtual production. Through the intrinsic relationship among a lens parameter, an imaging surface and an optical tracking device, by using the world coordinate and image point coordinate of N mark points on a background screen and the internal parameter and lens distortion parameter of a camera lens, the rotation matrix between a camera coordinate system and a world coordinate system and the translation vector of a camera perspective center in the world coordinate system are obtained, combined with the current position information given by a camera posture external tracking device in a current state, camera correction calibration information and viewing angle are obtained, the lookup table with a focusing distance and a focus length relationship is established, thus when a camera position, a lens focal distance and a focusing distance change, the position of the virtual camera of the virtual production system is fully automatically positioned and corrected, and thus a real video frame picture and a virtual frame image generated by a computer can be matched perfectly.

The invention relates to a scene rendering method and device, a computer readable storage medium and computer equipment. The method comprises the steps of loading a multi-level three-dimensional modeland a model map corresponding to each object required for scene rendering; wherein a model map corresponding to the three-dimensional model meeting the projection condition projects light and shadowdata of a first target level three-dimensional model; determining the distance between each object in the shooting range of the virtual camera and the virtual camera; determining a display level of the corresponding object on the target page according to the distance; and rendering a corresponding object on the target page based on the three-dimensional model of the display hierarchy and the corresponding model map. According to the scheme provided by the invention, the rendering effect of the virtual scene can be improved under the conditions of increasing the sight distance range and ensuring the loading speed of the virtual scene.

The invention relates to a mixed visual system calibration method based on a Kinect camera. A mixed visual system comprises the Kinect camera and a panoramic camera. The calibration method comprises the steps of carrying out calibration on an RGB camera of the Kinect camera and the panoramic camera, acquiring internal parameters of the RGB camera and the panoramic camera, setting a calibration board based on a checkerboard, and establishing a checkerboard coordinate system; and constructing virtual camera projection plane located in front of a panoramic camera coordinate system in space, calculating and acquiring a transformation matrix from the virtual camera projection plane to the checkerboard coordinate system, and further acquiring external parameters from an IR camera of the Kinect camera to the panoramic camera. The mixed visual system calibration method based on the Kinect camera can acquire the internal parameters of the Kinect camera and the external parameters of the mixed visual system, has low requirements for calibration conditions and a space configuration relation of the mixed visual system, and is flexible in use.

The invention relates to an auxiliary entertainment system for video chatting. The system can be used for adding cartoon expression pictures for video images of a user undergoing video chatting in real time so as to increase the chatting pleasure for the user. According to the system, cartoonlized expression patterns are located and drawn on various body parts, such as the face, fingers and the like, of a user in the video by using a mode recognition technology, and a specific expression pattern can also be drawn at an appointed position of the user in a video picture. The patterns can be changed according to the changes on pleasure, anger, sorrow, joy and other emotions selected by the user, and can also be changed by automatically recognizing the expressions and actions of the user according to mode recognition. Meanwhile, the system can also be compatible with the expression patterns, in general formats, used in word chatting software, and can be used for drawing the expression patterns in the video according to user settings. All the cartoon drawings are completed in real time, and a modified video stream is provided for any video chatting system used by the user in a virtual camera manner.

The invention relates to the technical field of computers, and provides a control method and device of a virtual camera in a virtual studio, an implementation method of the virtual studio, a virtual studio system, a computer readable storage medium and electronic equipment. The control method of the virtual camera in the virtual studio comprises the steps of: obtainingpreset parameters of the virtual camera in different preset studio links, whereinthe preset parameters comprise at least one of the position, the posture and the focal length; generating a corresponding mirror moving control according to each preset parameter; and in response to a triggering operation on any lens moving control, adjusting the virtual camera according to a preset parameter corresponding to any lens moving control. According to the scheme, based on the generated lens moving control, the virtual camera can shoot the virtual background pictures corresponding to different preset performance broadcasting links,so that the virtual background pictures and the actual pictures shot by the entity camera can be better fused, and the reality sense of the performance broadcasting pictures is improved.

The invention provides a hand-drawn scene three-dimensional modeling method combining multi-perspective projection with three-dimensional registration. The three-dimensional modeling method comprises steps that standardized preprocessing is performed on all three-dimensional models in a three-dimensional model base, virtual cameras are arranged at vertexes of a regular polyhedron, projection pictures at all angles of each three-dimensional model are shot to represent visual shapes of the three-dimensional model, visual features of all the projection pictures of each three-dimensional model are extracted, and a three-dimensional model feature base is established according to the visual features; users draw two-dimensional hand-drawn pictures of each three-dimensional model of a three-dimensional scene needing showing and character labels of the two-dimensional hand-drawn drawings by hands, images are shot through cameras, processing on image regions is performed, visual features of hand-drawn pictures are extracted, character label regions subjected to processing serve as retrieval key words, similarity calculation is performed on visual features of hand-drawn pictures and three-dimensional model features of the three-dimensional model feature base, retrieval is performed to obtain three-dimensional models of a three-dimensional scene, three-dimensional models with largest similarity are projected to corresponding positions through a three-dimensional registration algorithm, and then show of three-dimensional modeling of the hand-drawn scene and a three-dimensional is achieved.

Disclosed herein is a web-based videoconference system that allows for video avatars to navigate within the virtual environment. The system has a presented mode that allows for a presentation stream to be texture mapped to a presenter screen situated within the virtual environment. The relative left-right sound is adjusted to provide sense of an avatar's position in a virtual space. The sound is further adjusted based on the area where the avatar is located and where the virtual camera is located. Video stream quality is adjusted based on relative position in a virtual space. Three-dimensional modeling is available inside the virtual video conferencing environment.

The invention discloses a game recording method and device, and a virtual reality device. The method comprises the steps of setting multiple virtual cameras in the virtual reality device. The multiple virtual cameras at least comprise the virtual camera for recording a first angle of view of a player who employs the virtual reality device, and one or more virtual cameras for recording other angles of view following the first angle of view except the first angle of view; recording content displayed by the virtual reality device by employing the multiple virtual cameras; and synthesizing videos recorded by the multiple virtual cameras, thereby forming a panoramic video. Through application of the embodiment, the technical problem that the game experience of the game player cannot be restored due to the fact that only the content displayed at a PC can be recorded when the VR game is recorded is solved, and the possibility of restoring what the game player sees when the VR game is recorded can be provided.

Apparatus for remotely viewing and scanning microfilm at a first location, while controlling the viewing and scanning from a remote location, including a viewing and scanning device for generating a video feed and subsequently scanned images of the microfilm, a host computer at the first location in communication with the viewing and scanning device to receive the video feed and the scanned images, a user's computer at a remote location in communication with the host computer to receive the video feed and the scanned images from the host computer, and a virtual film movement control at the user's computer to control the movement of the microfilm at the first location. A virtual camera control at the remote location controls the camera of the viewing and scanning device.

The system comprises: a projector, a video camera, a cradle head of video camera, a projection screen and a computer. When using the simulation system to make simulation, in the first, the virtual view software in the computer generates a virtual 3D image to get multi virtual stereovision 3D images from more than two viewpoints at same time. The projector projects each 3D image to the screen; the real video camera respectively captures the 3D images from different viewpoints on the screen to get the output images of the simulation system at the measurement time; calculating the parameters of the virtual video camera, the parameters of imaging model of real video camera and the parameters of imaging model of projector; finally, based on the basis principle of stereovision, getting the virtual 3D scene and 3D space coordinates in the image.

The invention provides an eye interaction method and an eye interaction system for a video conference; the method comprises the following steps that (100) a colored image is acquired by a color camera, and a depth image which is in alignment with the colored image is acquired by a depth camera; (200) the colored image and the depth image are processed preliminarily, three-dimensional information under a virtual coordinate system is acquired, and the three-dimensional information is projected to the plane of a virtual camera to acquire an eye correction image; and (300) the median of the eye correction image is filtered, and a direct eye image is acquired. According to the eye interaction method and the an eye interaction system for the video conference, the operation is convenient, the real-time performance is high, different positions of video conference attendees are adapted to automatically, the realization is simple, and the attention to the video conference can be enhanced.

The invention provides an unmanned aerial vehicle positioning method based on a cooperative two-dimensional code of a virtual simulation environment, and the method comprises the steps: placing a checkerboard in a virtual scene, carrying out the calibration of a camera, and obtaining the parameters of the virtual camera; Identifying the AprilTag two-dimensional code in the scene, accurately positioning the unmanned aerial vehicle through the AprilTag two-dimensional code, and verifying the calibration accuracy of the camera and the feasibility of the positioning and attitude determination algorithm based on the AprilTag two-dimensional code in the virtual scene. In the virtual scene, the present invention places a checkerboard grid, uses a coordinate system conversion relationship to obtain virtual camera parameters, and calibrates the camera, and provides a camera internal reference for the drone visual navigation verification algorithm in the virtual scene. the problem that the virtual camera internal parameter cannot be acquired is solved, the calibrated camera parameters and the AprilTag two-dimensional code positioning algorithm are used for solving the position parameters ofthe camera, and the problem of rapid and robust positioning of the unmanned aerial vehicle in a complex environment is solved.

A community game that adapts a scene on a community display based on the number of participating players and/or player locations from one session of the community game to another or in any given session and/or number of the gaming terminals. Selectable elements are displayed on the community display for selection by the participating players. When additional players are eligible to participate in the community game, a field of view or a virtual camera angle of a scene is changed to reveal additional selectable elements or a greater variety of selectable elements than were available for selection with fewer participating players. Any of the selectable elements can be cooperatively selectable elements which multiple players can select to reveal an enhanced award. Based on the players' locations, the scene can be adapted to portray selectable elements or previously hidden or obscured areas of the scene closest to the newly participating player(s).

The invention provides a game role transmission method and device, electronic equipment and a storage medium, and relates to the technical field of games. The current game scene picture of the game world is displayed through a graphical user interface of a first terminal device, the current game scene picture comprises a game role, and the current game scene picture displayed on the graphical userinterface is determined through a virtual camera; in response to a game scene transmission instruction, a scene transmission picture can be displayed on the graphical user interface and target scenedata can be loaded, and the scene transmission picture is a picture generated by the transmission picture data determined by the virtual camera; after the target scene data is loaded, the game role iscontrolled to enter the target scene, and other game scenes are not introduced when the target scene data is loaded, so that the performance consumption of the first terminal equipment is hardly increased in the transmission process of the game role, and extra workload is not increased for a game designer.

A game performing method for making a computer device execute a predetermined game by generating a first object and a second object as seen from a virtual camera, has: judging whether there is a hit between the first object and the second object; judging whether a predetermined event occurrence condition is satisfied if it is judged that there is the hit between the first object and the second object; generating a first image which is an internal structure object of the second object if it is judged that the predetermined event occurrence condition is satisfied; and generating a second image which is the internal structure object with a predetermined part thereof changed after the first image is generated.

The invention relates to the field of automobile electronics, and discloses an augmented virtual reality projection method and system based on sight tracking. The augmented virtual reality projectionmethod based on sight tracking is applied to an automobile, the automobile adopts an AR-HUD technology, and the method comprises; acquiring a video image in the automobile; detecting a face image of atarget user in the video image; determining a reference position coordinate and a following position coordinate according to the face image; calculating an included angle between the sight line of the target user and the horizontal direction of the automobile according to the reference position coordinate and the following position coordinate; and adjusting the projection angle of the virtual camera corresponding to the AR scene according to the included angle. According to the embodiment of the invention, the augmented virtual reality projection effect is improved.

The invention discloses an animated film making method process and an animated film making system based on a real-time rendering system. According to the animated film making method process and the animated film making system, a plurality of real-time dynamic virtual worlds are constructed for animated film making, and system mated virtual cameras are used for shooting the real-time simulated dynamic virtual worlds so as to complete making of a whole animated film. The animated film making method process and the animated film making system have the advantages that animated film making efficiency is improved greatly on the premise of guaranteeing quality, cost is reduced, wider creative spaces and higher freedom degree are provided for directors and photographers, and a whole film making process is visual in real time and flexibly adjustable at any time.