72 results about "Video texture" patented technology

The invention relates to an automatic matching correction method of a video texture projection in a three-dimensional virtual-real fusion environment and a method of fusing an actual video image and a virtual scene. The automatic matching correction method comprises the steps of constructing the virtual scene, obtaining video data, fusing video textures and correcting a projector. A shot actual video is subjected to virtual scene fusion on the surface of the complicated scene such as an earth surface and a building by a texture projection mode, the expression and showing abilities of dynamic scene information in the virtual-real environment are improved, and the layered sense of the scene is enhanced. A dynamic video texture coverage effect of the large-scale virtual scene can be realized by increasing the number of the videos at different shooting angles, so that a dynamic reality effect of the virtual-real fusion of the virtual-real environment and the display scene is realized. The obvious color jump is eliminated, and a visual effect is improved by conducting color consistency processing on video frames in advance. With the adoption of an automatic correction algorithm, the virtual scene and the actual video can be fused more precisely.

The invention discloses a method and system for watching a 3D panoramic video based on a network video live broadcast platform. The method comprises an establishment step of establishing two 3D models in a panoramic player of a terminal device, splitting video data into left and right part content corresponding to left and right eyes, adding the left and right part content to the 3D models, thereby forming panoramic video textures, establishing left and right three-dimensional coordinate spaces in the player of the terminal device, and establishing a 3D visual angle sphere on which the panoramic video textures are mapped, in each coordinate space; an addition step of adding two 3D cameras to each three-dimensional coordinate space and placing the lenses of the 3D cameras at the sphere centers of the3D visual angle spheres; and a rendering step of dividing a display window of the terminal device into left and right parts and rendering the two 3D visual angle spheres on which the panoramic video textures are mapped to the left and right parts of the display window.

The invention relates to the technical field of artificial intelligence, and provides a VR-based video rendering method and device, electronic equipment and a storage medium. Obtaining a to-be-rendered video and decoding to obtain video texture data; loading a vertex shader and a fragment shader and compiling; inputting the vertex coordinates and the vertex indexes into a vertex shader to obtain atarget vertex shader, and inputting the texture coordinates into a fragment shader to obtain a target fragment shader; and monitoring the offset of the to-be-rendered video to obtain updated video texture data, and rendering the updated video texture data to a display screen of the terminal device in the target vertex shader and the target fragment shader. According to the invention, the updatedvideo texture data is rendered to the display screen of the terminal device through the preset rendering mode, so that the video rendering accuracy is improved. In addition, the invention also relatesto the technical field of the block chain, and the to-be-rendered video can be stored in the block chain node.

The invention relates to a dynamic texture waterfall modeling method combining with multiple physical attributes, belonging to the technical field of virtual reality science. The dynamic texture waterfall modeling method comprises the following steps of: (1) measuring on the spot to acquire physical attribute parameters of real waterfalls in different environments, such as flow velocity, flow rate, head drop, terrain and sunlight which influence the forms of the real waterfalls, and also recording video textures in corresponding states by using a video camera; (2) extracting a plurality of control parameters from the dynamic textures of a waterfall model; (3) reasonably reorganizing acquired data in a database, and building distribution models for the physical attributes through correlation analysis; (4) determining demands according to scenes, and calculating real data inside the database by utilizing a mapping law to obtain the dynamic textures of the waterfalls, which approac to real effect; and (5) rendering the waterfall scenes by using the dynamic textures. According to the invention, a statistic law of multiple physical attributes and the dynamic textures of the waterfalls is extracted, high-lifelike waterfall scene modeling is carried out on the waterfalls in any environmental form by utilizing statistical distribution and the traditional data, the defect of model texture distortion brought about by ignoring physical factors in the traditional waterfall modeling is overcome and the real simulation of the surface textures of waterfall flows driven by the physical attribute parameters is realized.

The invention provides a mountain disaster early-warning method and system. The mountain disaster early-warning method comprises the following steps that mountain disaster data are collected under thesame view point; static panoramas are spliced and synthesized; video textures in the mountain disaster motion process are generated; the static panoramas and the video textures are combined to generate a constructed dynamic panorama; and multi-period images are overlaid, and the change of the elevation and horizontal displacement before and after mountain disaster deformation is quantitatively analyzed. According to the mountain disaster early-warning method, the video textures and the panoramas are combined, the dynamic panorama in the deformation process of mountain disasters such as the landslide and the debris flow is constructed, meanwhile, the multi-period images are overlaid, the quantitative analysis result of mountain disaster deformation data is obtained, and the mountain disaster is early warned.