106 results about "Drop shadow" patented technology

The invention provides a three-dimensional terrain model real-time smooth drawing method with combination of a GPU technology, and belongs to the technical field of image processing. The objective of the invention is to provide the three-dimensional terrain model real-time smooth drawing method with combination of the GPU technology so that cache reuse in multiple times of drawing can be realized based on the current popular programmable GPU technology with a global digital elevation model acting as a data source, and load of computation space is effectively reduced. The method comprises the steps of construction of a multi-resolution pyramid model, elimination of image noise points, filtering of images, partitioning of planar projection of the earth according to equal latitude and longitude, and construction of different hierarchical levels of pyramid layers according to a mode from the top to the bottom. Acceleration and enhancement of terrain rendering are realized based on the programmable GPU technology, i.e. all phases of a graphical drawing pipeline are controlled by using shader languages, two and textures are respectively generated by vertex information and index information of elevation data to be stored in video memory for scheduling of whole terrain drawing; and vertex interpolation and migration are performed in the geometric phase by utilizing a curved surface subdivision and fractal technology so that procedural details are generated and the phenomenon of edges and corners of the terrain mesh when resolution is insufficient can be compensated.

This invention provides systems and methods that allow a user to change the size of a background used with a graphics-based user interface. This enables tailored background sizes based on user preference and allowable conditions, which are particularly useful with display devices having a large display area. By custom sizing a background to current conditions, a user may navigate an image among obstacles at a receiving surface and obstacles along a projection path between a projection lens and receiving surface. In addition, a user may customize the background size on a large LCD screen according to more suitable dimensions for an image used in the background or to a personal preference, thereby creating a personalized look and feel for the graphics-based user interface. One embodiment of the present invention defines a usable area for a graphics-based user interface according to the current size of the background. Changing the background size in this case also then changes the usable area for the graphics-based user interface.

A touch panel comprises panel glass and a touch sensing module laminated on the back surface of the panel glass, the panel glass comprises a display area and a non-display area located on the outer periphery of the display area, the touch sensing module comprises a first conducting layer and a second conducting layer, and the first conducting layer and the second conducting layer are stacked in a spaced mode in the thickness direction of the panel glass. The first conducting layer comprises a plurality of first conducting strips which extend in the first direction, are arranged at intervals and are insulated from one another, the second conducting layer comprises a plurality of second conducting strips which extend in the second direction, are arranged at intervals and are insulated from one another, and drop shadows, on the plane where the second conducting strips are located, of the first conducting strips intersect with the second conducting strips. A sensing area is formed by the portion, between the boundary of the first conducting layer and the boundary of the second conducting area, of the touch sensing module, the sensing area comprises a visible area right facing the display area and a non-visible area right facing the non-display area, the drop shadow, on the panel glass, of the visible area coincides with the display area, and the drop shadow, on the panel glass, of the non-visible area coincides with the non-display area. Therefore, the user experience function can be achieved.

The invention discloses a headset micro-projection stereoscopic vision display belonging to the field of virtual reality. The headset micro-projection stereoscopic vision display comprises a supporting unit, an image display unit and an optical system unit. Through the four-projection double-screen splicing technology of a micro projector, the field angle is increased, and the image quality is improved so that the resolution of a display screen can reach 1600*800. Through polarizer and analyzer equipment in different polarization directions added to the micro projector and an optical system before eyes of a user, the stereoscopic image display function is realized. Through the lens group added to the optical system, the function of easing the use fatigue of a user is realized, and market potential is great.

2D imposters representing 3D graphical objects, such as virtual spectators in a simulated sports arena, are dynamically displayed at predefined locations relative to an arbitrarily movable camera position in a virtual space. A hierarchical data structure is created with branches corresponding to iteratively subdivided groups of imposter data structures and is used to store polygon vertices, texture data, and other 2D imposter data generated during run-time. Center locations of the hierarchically divided groupings are used to determine a common projection location within a current view volume at which each 2D imposter is projected as an oriented image from each corresponding animated 3D graphical object. Sets of contiguous 2D imposter data are determined based on currently visible groupings of predefined locations that do not require rendering as 3D graphical objects due to their distance from the camera position. Each set of contiguous 2D imposters is rendered with a single draw primitive.

The application relates to 2D video with an option for projected viewing in modeled 3D space. A multimedia distribution system enables a user to view 2D video content in a conventional 2D or "flat" viewing mode, or if the system is VR / AR enabled and the user is so inclined, a representation of a modeled 3D space may be provided or accessed in association with the 2D video content, and the 2D videocontent may be projected onto a specified surface within the modeled 3D space for viewing by the user as though the 2D video were being displayed at that surface / location within the modeled 3D space.Further, the pose of the user may be monitored and the projection of the 2D video content updated accordingly to match the user's current pose and view into the modeled 3D space.

The invention relates to a two-dimensional video and three-dimensional scene fusion method and device, equipment and a storage medium. The method comprises the steps of obtaining depth texture information and pixel values of a to-be-fused scene; obtaining world coordinates according to the depth texture information and the pixel viewport coordinates; obtaining to-be-fused pixel points by using a shadow volume algorithm according to the specified projection mode of the to-be-fused video, wherein the specified projection mode is generated according to user settings; calculating texture coordinates of the to-be-fused video corresponding to the to-be-fused pixel points according to the world coordinates; and fusing the to-be-fused video and the to-be-fused scene by taking the texture coordinates and the viewport coordinates as standards and combining the pixel values. According to the method, the coordinates of the three-dimensional scene are calculated by adopting the depth texture, and the projection of the video to the scene is realized by virtue of the shadow volume algorithm, so that seamless fusion of the video and the scene is realized.

A method for implementing a graphics pipeline. The method includes building a first shadow map of high resolution, and building a second shadow map based on the first shadow map of lower resolution. The method includes determining a light source affecting a virtual scene, and projecting geometries of objects of an image of the virtual scene onto a plurality of pixels of a display from a first point-of-view. The method includes determining a foveal region when rendering the image, wherein the foveal region corresponds to where an attention of a user is directed. The method includes determininga first set of geometries is drawn to a first pixel, determining the first set of geometries is in shadow based on the light source, and determining the first set of geometries is outside of the foveal region. The method includes rendering the first set of geometries using the second shadow map.

The invention discloses a pixel-driven mobile phone operation interface text detection method. The method comprises the following steps: 1) generating a mobile phone operation interface image; 2) improving a text detection model; and 3) correcting a detection box error based on a projection method. According to the pixel-driven mobile phone operation interface text detection method, the problem oflack of text marking data of an existing mobile phone operation interface is solved; the position and font size of the generated data are random within a certain range, and the generalization of themodel can be improved by training; an up-sampling layer is redesigned for the output of ResNet50, so that the deep feature proportion is improved; aiming at the condition that the mobile phone operation interface scene hardly has angle deviation, an angle regression branch of a regression part of the detection frame is removed and a loss function is correspondingly modified to improve the networkconvergence speed; the detection frame error correction method based on the projection method can assist in correcting the detection frame deviation under a pure color background, and the problems ofincomplete character detection, large blank area or the like are reduced as much as possible.

The invention discloses a graph, table and text mixed layout analysis method combining a threshold value and a projection method. The method comprises the following steps: S1, converting a corrected grayscale image R'into a binary (black and white) image according to a threshold value Tg; S2, dividing each foreground area in the binary image into a character area and a non-character area; S3, analyzing the table sub-graph into a table; S4, segmenting each table into rows / columns; S5, detecting whether the page layout of the whole image is correct or not; S6, sorting the columns / rows to determine the processing sequence of the next step, wherein the columns are sorted before the rows are sorted; S7, for each column / row of the table, performing column-first and row-second operation, only processing pure columns / rows, and sequentially segmenting the columns / rows into characters; and S8, processing the compounded columns / rows according to the characters, and sequentially segmenting the columns / rows into characters. According to the method, the layout of the page can be analyzed to determine whether the page is reversed in front, back, up-down and left-right directions, characters adhered to the table can be processed, and the recognition rate of the characters can be greatly improved.