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1167results about How to "Improve drawing efficiency" patented technology
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Document processor program having document-type dependent interface
ActiveUS9779063B1Increase knowledge worker drafting efficiencyImprove drawing efficiencyDigital data information retrievalNatural language data processingDocument preparationDocumentation
Systems and methods for document processing are discussed herein. In certain embodiments, novel document processor programs may allow for a knowledge worker to concentrate on the content of a document, rather than its formatting. Such programs may separately store layout and / or typesetting information from content, allowing for their combination after the content is created. Novel data structures and techniques are provided to permit the use of advanced version control, collaboration techniques and team / or workflows. User interfaces are also disclosed which dynamically adapt to a document type and / or a portion of a document being edited. Such features may significantly increase knowledge worker drafting efficiency.
Owner:NOT INVENTED HERE LLC
Graphics processing unit (GPU)-orientated large-scale terrain fast drawing method
InactiveCN102867331AImprove drawing efficiencyTake full advantage of programmability3D-image rendering3D modellingTerrainLevel of detail
The invention provides a graphics processing unit (GPU)-orientated large-scale terrain fast drawing method. The method comprises the following steps of: generating an out-of-core file of original terrain, wherein the out-of-core file stores a plurality of terrain blocks containing original terrain data, an indexing serial number of each terrain block and compressed texture blocks corresponding to the terrain blocks, and the terrain data comprises texture data and altitude data; determining the level of detail (LOD) hierarchical distribution of the terrain according to a predetermined view point, establishing a terrain quadtree structure, traversing the terrain quadtree structure, selecting a corresponding quadtree node for different LODs, and adding the selected quadtree node to a rendering scheduling queue, wherein each node of the terrain quadtree structure corresponds to the corresponding compressed terrain block in the out-of-core file and is used for storing the LOD and the altitude data of the corresponding compressed terrain block; and acquiring the node to be scheduled from the rendering scheduling queue, and rendering the node to be scheduled to finish the drawing of the original terrain.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Method and node for discovering topology structure in multiprotocol label switching ring network
ActiveUS20070230368A1Speed up discovering topology structureImprove drawing efficiencyLoop networksPhysical layerRing network
Embodiments of the present invention provide a method and a node for discovering topology structure automatically in a Multi Protocol Label Switching (MPLS) ring network. The method includes: when receiving a topology discovering message, determining, by a node in the MPLS ring network, whether the topology discovering message is sent by the node; if yes, updating information of topology structure of the MPLS ring network stored in the node according to information of topology structure of the MPLS ring network carried by the topology discovering message; otherwise, appending information of topology structure of the node to the topology discovering message and forwarding the topology discovering message to a next node. Thus, the network topology may not depend on the topology of the physical layer network and the speed of discovering topology structure of the ring network is increased.
Owner:HUAWEI TECH CO LTD
Rapid map making system based on GIS (Geographic Information System) data
InactiveCN102509511AFast drawingImprove drawing efficiencyMaps/plans/chartsSpecial data processing applicationsData transformationOriginal data
The invention discloses a rapid map making system based on GIS (Geographic Information System) data. The rapid map making system based on the GIS data is used for converting the GIS data into map making data in a high-precision map data format for map making publication, and completing intelligent pre-processing of the map making data in the data conversion process by fully utilizing rich semantic information in the GIS data and map making rules predefined in the map making system. The rapid map making system based on the GIS data comprises an original GIS data reading module, a symbol library establishing module, a graphical design repository module, an element conflict process repository module, a map making rule providing module, a map data generating module and a map file input and output module. According to the invention, the GIS data is converted into the map making data, therefore, the pre-processing operation of a large amount of the map making data can be completed before the map is edited, the map making period of a digital map is shortened, and the map making efficiency and quality based on GIS data are improved.
Owner:WUHAN UNIV
Template based one-button type thematic map automatic forming method and system
ActiveCN104008162AImprove drawing efficiencyImprove accuracyGeographical information databasesSpecial data processing applicationsTemplate basedMaterial resources
The invention discloses a template based one-button type thematic map automatic forming method and system, belonging to the field of computer mapping and relating to the computer automated mapping and mapping synthesized technique. According to the method, a basic data support module comprises a spatial database, a model library and a thematic map mapping template library; the specific mapping steps comprises the follows: establishing the spatial database, selecting content information of the thematic map, establishing the template library, selecting a thematic data representing way, establishing the template library, configuring display information of mapping elements, generating a thematic map configuration XML (Extensive Markup Language) text and analyzing the thematic map configuration XML text, and visually outputting the thematic map configuration XML text. According to the technical scheme provided by the invention, the thematic mapping efficiency and the mapping accuracy can be improved, the mapping automation and intelligence level can be improved, the thematic map making process can be speeded up, and the manpower, the material resources and the financial resources can be economized.
Owner:CHINA UNIV OF GEOSCIENCES (BEIJING)
ActiveX drafting method and device
InactiveCN101499172ASave resourcesReduce repeated drawing of the background image area2D-image generationSpecific program execution arrangementsComputer graphics (images)Computerized system
An embodiment of the invention relates to a control drawing method and a device thereof. The method includes steps: judging picture element whether transparent in the control picture, if no, covering the picture element on a background picture; if no, overlapping the picture element on the background picture; wherein, the control picture includes at least two picture elements, at least one picture element of the two picture elements is nontransparent. By judging the picture element whether transparent, the embodiment reduces repeat drawing background picture region in drawing the control picture course, saves computer system resource and increases drawing efficiency.
Owner:HUAWEI DEVICE (SHENZHEN) CO LTD
Non-homogeneous space partition based scene visibility cutting method
The invention relates to a scene-visible tailoring method based on non-uniform space division, and the scene-visible tailoring method has the following procedure: (1) performing scene organization: constructing first a non-uniform loose octree scene to form a scene organizing mode of loose octree and then renewing the loose octree; (2) view point sequencing: after establishment and renewal of the loose octree is completed, sequencing the nodes of the loose octree according to the view points to block the searching efficiency to the maximum; (3) performing visible tailoring: carrying out frustum tailoring, blockage tailoring and detail tailoring successively to omit the excessively-small visible objects in the projecting area of the final picture. The tailoring treatment can cut off objects having no contribution to the final picture, thereby reducing the drawing cost and improving the drawing efficiency of complex scenes. The invention maintaining the advantage of space division avoids the limitations of traditional octree scene organizing methods, reduces the cost of scene structure renewal, and in addition, overcomes the defect that loose nodes are difficult to cut.
Owner:BEIHANG UNIV
Tile map manufacturing method and system
ActiveCN103208225AImprove drawing efficiencyMaps/plans/chartsSpecial data processing applicationsComputer sciencePyramid
The invention discloses a tile map manufacturing method and system. The tile map manufacturing method includes setting various parameters of a pyramid model of a tile map; generating a layer data list of the pyramid model according to the parameters and performing the visualization configuration of the layer data list in a WYSIWYG (what you see is what you get) mode; and manufacturing the pyramid model of the tile map according to the configured layer data list. According to the tile map manufacturing method, the various parameters of the pyramid is firstly determined, then every level of the pyramid is configured with a map body in a unified interface, the completed appearance of the pyramid model of the tile map is presented in real time during configuration, and at last the map is produced in a unified mode. Therefore, the shortcoming that the final result of the tile map cannot be previewed during map configuration is overcome, and the map configuration and map production efficiency of the pyramid model of the tile map is improved.
Owner:REMOTE SENSING APPLIED INST CHINESE ACAD OF SCI +1
Real time drawing method of vivid three dimensional land form geograpical model
InactiveCN1753033AFlexible managementAchieve realistic display effectImage memory management3D-image renderingViewpointsGeometric modeling
The invention is a method for real-time drawing geometric model of realistic 3D topography, characterized in comprising the following steps of: (1) preprocessing topographical data to its structure accord to the follow-up operation; (2) adopting a topographical planning algorithm of making file-file real-time switching based on traditional LRU algorithm and the method of integrating viewpoint interests to complete the real-time planning for large-scale topographical files; (3) simplifying topographical model based on geometric Mip Map topographical network implementing and generating algorithm;(4) displaying topographical feature based on multi-grain GPU topographical Bump Map rendering algorithm; (5) realizing topographical data conversion based on four-tree ergodic topographical partial-replacing algorithm. The invention solves the problem of the drawing speed of topographical model being low, raising the drawing efficiency and achieving the purpose of real-time drawing dynamical topography.
Owner:BEIHANG UNIV
Automatic mapping monitoring system and method of intelligent substation secondary virtual loop
InactiveCN105680568AImprove drawing efficiencyShorten the timeCircuit arrangementsInformation technology support systemVirtual terminalSmart substation
The invention discloses an automatic mapping monitoring system and method of an intelligent substation secondary virtual loop. The method comprises the steps of: firstly, obtaining an SCD file for reading all station devices and carrying out analysis to obtain an included data models and connection relations corresponding to switches and virtual loop devices; creating pixels corresponding to different switches and virtual loop devices so as to form a pixel database; establishing a mapping correlation between the switch pixels and the switches, generating a switch network map indicating switch link connection relations, establishing a mapping correlation between the virtual loop device pixels and the devices, and generating a virtual terminal connection map indicating device link topological connection relations, with an interval serving as a unit; and finally, receiving real-time virtual loop link states uploaded by devices in the intelligent substation in real-time, updating the corresponding switch network map and virtual terminal connection map, and monitoring the link states online. According to the invention, the mapping efficiency of the switch connection map and the virtual terminal connection map can be improved, the online real-time monitoring level is increased, and the operation and maintenance efficiency of the secondary virtual loop is improved effectively.
Owner:NANJING GUODIAN NANZI POWER GRID AUTOMATION CO LTD
Game dress-up system and method
The technical scheme of the invention provides a game dress-up system and a game dress-up method. The game dress-up method comprises the following steps: saving a game role body part and to-be-dressed information, and establishing a corresponding null object role; acquiring command information, a data table of to-be-dressed body part of the game role, and calling information of a corresponding to-be-dressed body part under a storage path of the data table; traversing the game role body part information, acquiring a game role part model mesh, a part model skeleton list and a part model map, and performing merging; and rendering the null object role by using a skin mesh renderer. The game dress-up system and method have the beneficial effects that the drawing efficiency can be improved by adopting a skin mesh renderer after mesh merging; and the number of drawcall can be reduced after materials are merged, so that the dress-up efficiency is improved, and application and extension of skeletal animation are conveniently combined.
Owner:ZHUHAI KINGSOFT ONLINE GAME TECH CO LTD +1
Block matching parallax estimation-based middle view synthesizing method
InactiveCN102254348AShorten the timeImprove search accuracyImage analysisSteroscopic systemsParallaxViewpoints
The invention provides a self-adapting parallax estimation-based virtual viewpoint drawing method, which is used for carrying out parallax estimation on two images simultaneously shot by a horizontal camera set and obtaining a virtual view at a random position among input viewpoints through interpolation and inverse mapping according to solved parallax views. The method comprises the steps of: firstly, respectively taking a left image and a right image as target images, carrying out self-adapting parallax estimation on a searching window so as to solve two parallax views which take the left image and the right image as the target images and adjusting a size of the window according to texture similarity of the two views; and then, carrying out virtual view drawing on appointed viewpoints according to solved parallax to obtain a final result. In the parallax estimation process of the block matching parallax estimation-based middle view synthesizing method, only horizontal searching is carried out, the amount of calculation is greatly reduced; and a method for self-adapting the searching window is provided, thus the accuracy for the parallax estimation is enhanced. The block matching parallax estimation-based middle view synthesizing method provided by the invention can obtain an excellent synthesizing result under the condition that the camera set is horizontally arranged and the distance from a foreground of a view to cameras is farther.
Owner:BEIHANG UNIV
Electronic white board equipment and drawing method thereof
InactiveCN101630240AImprove drawing efficiencyImprove drawing speedDigital output to display deviceWhiteboardGraphics
The invention discloses electronic white board equipment and a drawing method thereof. The device comprises a handwriting identification module and a graphical operation module, wherein the handwriting identification module is used for identifying a signal input in any position of a white board and carrying out voice playing while identifying; the graphical operation module comprises a first storage unit, a second storage unit, a graph-selecting unit and a drawing unit; the first storage unit stores a plurality of graphs unchanged in the white board; the second storage unit stores graphs to be stored in the white board; the graph-selecting unit is used for storing a graph selected by the first storage unit to the second storage unit when the handwriting identification module identifies a graph-selecting operation; and the drawing unit is used for re-drawing other graphs in a region where the selected graph is arranged into the first storage unit and directly copying all the graphs of the first storage unit and the second storage unit as images to a screen for displaying when re-drawing the graphs. The invention can effectively improve the drawing efficiency of the electronic white board.
Owner:SHENZHEN ACTO DIGITAL VIDEO TECH
Computer system with heap and card table
InactiveUS6845437B2Efficient managementEliminate needData processing applicationsMemory adressing/allocation/relocationOptimization systemMemory address
A computer system has a heap for storing objects and a card table for tracking updates to objects on the heap, typically for garbage collection purposes. In particular, the heap is divided into segments, each corresponding to a card in the card table, and any update to a segment in the heap triggers a write barrier to mark the corresponding card in the card table. It is important that this write barrier is as efficient as possible to optimize system performance. In some circumstances an object update may be made to an address outside the heap. To ensure that this still properly maps to a card in the card table, the entire memory space is folded cyclically, so that any given memory address corresponds to one, and only one card, in the card table.
Owner:IBM CORP
House type vector graph generation method and apparatus for building and terminal
ActiveCN107330979AImprove drawing efficiencyNo manual drawingImage data processingGraph generationDe noising
The invention provides a house type vector graph generation method and apparatus for a building and a terminal, and relates to the technical field of building image processing. The method includes the steps of obtaining original images of the house type of the building, conducting pretreatment for the original images to enhance the original images, de-noising the original images to obtain target images, determining the house type integral contour of the target images, segmenting the target images into wall areas and non-wall areas based on the house type integral contour, conducting vector processing for the wall areas to fit wall lines, and generating the vector graph of the house type of the building based on the wall lines. Corresponding vector graphs can be generated based on the original images of the house type of the building without manual drawing, labor cost can be saved, and vector graph drafting efficiency can be improved.
Owner:广州极点三维信息科技有限公司
Method and device drafting character string at targeted area
ActiveCN101127035AImprove drawing efficiencyReduce waste of resourcesNatural language data processingSpecial data processing applicationsLower limitComputer graphics (images)
The utility model discloses a method of rendering character strings within object regions. The method is as follows: a font size variation range is preset; character strings are rendered according to reference font sizes within the object regions; whether the rendered character strings exceed the size of the object regions is judged; if yes, the reference font sizes replace the upper limit of the variable font sizes when the reference font sizes are smaller than the upper limit of the variable font sizes, and the reference font sizes are reduced according to a first preset rule; if no, the reference font sizes replace the lower limit of the variable font sizes when the reference font sizes are bigger than the lower limit of the variable font sizes, and the reference font sizes are enlarged according to a second preset rule; whether the reduced or enlarged reference font sizes are within the variation range of the font sizes is judged; if yes, the character strings are re-rendered within the object regions. The utility model can simultaneously realize line wrap and font reduction filling within object regions, while ensuring the efficiency of rendering character strings.
Owner:KINGDEE SOFTWARE(CHINA) CO LTD
Continuous drawing production line and production method of strip product
ActiveCN103447347ASimple structureNovel and reasonable designMetal sawing devicesMetal sawing accessoriesProduction lineManufacturing engineering
The invention discloses a continuous drawing production line of a strip product. The continuous drawing production line comprises an uncoiler, a straightener, a continuous drawing machine, a length measuring device and a cuttolength saw, as well as a stacking device for stacking the sawn product or a rolling machine for rolling up the sawn product, wherein the uncoiler, the straightener, the continuous drawing machine, the length measuring device and the cuttolength saw as well as the stacking device or the rolling machine are arranged in sequence. The continuous drawing production line provided by the invention has the advantages that the floor space is reduced, the damage and transformation of the products are avoided in hoisting, and the yield is improved. The invention also discloses a production method of the continuous drawing production line of the strip product. The production method comprises the steps of unfolding a pony roll blank to a straight line state, straightening the blank which is unfolded to the straight line state, carrying out continuous drawing processing on the straightened blank to form the product, measuring the length of the product according to the preinstalling length, sawing the product according to the preinstalling length, and stacking the sawn product or rolling up the sawn product. The production method of the continuous drawing production line provided by the invention has the advantages that the production efficiency and the yield are improved.
Owner:XIAN METALWK HYDRAUMATIC MACHINERY
Method for drawing three-dimensional animation scene only containing object change
InactiveCN102346918AImprove drawing efficiencyGuaranteed accuracyAnimation3D-image renderingAnimationMultiple frame
The invention discloses a method for drawing a three-dimensional animation scene only containing object change and belongs to the technical field of computer three-dimensional animation. The method disclosed by the invention comprises the following steps of: dividing the three-dimensional animation scene into a static sub-scene and a dynamic sub-scene, only performing once pre-drawing computationon the static sub-scene, and multiplexing the pre-computation result in each frame of the animation; and re-drawing in each frame of image of the dynamic sub-scene, and combining with the pre-drawingresult of the static sub-scene so as to ensure the accuracy of the drawing result. In the method disclosed by the invention, a relatively vivid global illumination effect is realized by creating a virtual secondary spot light source. For general animation drawing, a series of three-dimensional animation plots only containing object change can be separated, and multiple frames of images contained in each plot can be drawn by the method disclosed by the invention.
Owner:CHANGCHUN UNIV OF SCI & TECH
Multi-scene graph construction method in distributed virtual environment
ActiveCN104183023AQuick cropping methodDoes not affect positional relationshipImage data processingTerrainComputer graphics (images)
The invention discloses a multi-scene graph construction method in distributed virtual environment. The method comprises the following steps: 1) dividing a scene graph in a scene graph server into a public scene graph and a private scene graph; 2) setting access right and the private scene graph which can be accessed by each registered user through a right server; and 3) operating the private scene graph by the user according to the access right, editing the editable private scene graph or creating a sub-scene graph to serve as the private scene graph of the user, and storing the private scene graph of the user into the scene graph server, wherein each scene graph corresponds to one type of scene object set in one scene area, scene objects are various static or dynamic entity objects, except terrain scenes, in description virtual reality environment, each scene object corresponds to a scene node in the scene graph, logic relationship between the scene nodes is determined according to the logic relationship between the scene objects, and each scene graph is provided with a root node used for representing the scene graph. Scene drawing efficiency is improved.
Owner:北京微视威信息科技有限公司
Method and device for guiding drawing
ActiveCN106355973AImproved drawing skillsImprove drawing efficiencyCharacter and pattern recognitionTeaching apparatusImaging analysisFile comparison
The invention discloses a method for guiding drawing. The method comprises the following steps: receiving drawing information of a user; extracting a line profile from the drawing information according to an image recognition technology and recognizing different foreground and background objects; analyzing the change rule of thickness, smoothness and length; performing linear detection on the objects and recognizing an apparent horizon and a central point; performing picture processing and illumination analysis; recognizing highlight, shadow and projection in the image; appointing a drawing style as a limiting condition; guiding the drawing information image of the user; giving a correcting suggestion. According to the method, the user can know the difference and defect of the drawing skill in a drawing process according to the freehand sketching of the user, an image analysis recognition technology and an intelligent data comparison technique based on the drawing principle. No manual intervention exists in the whole process, so that the drawing efficiency of the user is increased and the study cost is reduced.
Owner:厦门优莱柏网络科技有限公司
State set based shader three-dimensional graph drawing frame and drawing method
InactiveCN1851753AImprove integrityImprove acceleration performance3D-image renderingDynamical optimizationMaterial Description
The present invention uniformly package and descript the drawing object model information, texture information, voice message relevant Shader code in Materials Description file before tuning in scene chart, and tuning in shown off object through Material Loader and Media Loader in scene chart data store organization, also according to Shader information sorting and to proceed static and dynamic optimization, then using optimized drawing status information loading to engine to proceed drawing, drawing engine consisting of drawing control and state control, both combined to complete one drawing object drawing process. The present invention makes effective management to Vertex Shader and Pixel Shader, fully utilizing state package and sorting function, simplifying interface calling.
Owner:BEIHANG UNIV
LOD model generation method based on linear quadtree
ActiveCN105405166AAchieve simplificationQuick elimination3D-image rendering3D modellingTerrainGraphics
The invention provides an LOD model generation method based on a linear quadtree. The method comprises the following steps: performing linear quadtree segmentation on to-be-drawn terrain, storing data of the to-be-drawn terrain in a two-dimensional array, reading information of each node in the linear quadtree from the two-dimensional array through an index, storing leaf node information of the linear quadtree, organizing terrain nodes, enabling the terrain nodes in the linear quadtree to be stored in a one-dimensional array, establishing a terrain node evaluation mechanism on the basis that a static error and a dynamic error are considered, performing crack elimination on different segmentation levels of the adjacent terrain nodes, and obtaining an LOD model based on the linear quadtree. The method is applied to a terrain simplification aspect in a computer graphics and image field, and the terrain nodes are organized by utilizing a linear quadtree storage model and through combination use of a two-dimensional filling curve; on the basis that error factors are fully considered, the node evaluation mechanism is established, and a terrain crack problem is eliminated; and terrain drawing efficiency can be obviously improved.
Owner:沈阳点为信息科技有限公司
Construction and evaluation of parting High Map on basis of high throughput
ActiveCN103525917AEliminate build effectsImprove accuracyMicrobiological testing/measurementData visualisationPopulationError tolerance
The invention provides a construction method of a parting High Map on the basis of high throughput. The construction method comprises the steps as follows: 1), genetic segregation population markers subjected to development and parting with a high-throughput sequencing method; 2), every two markers are subjected to genetic linkage test, and linkage groups are divided; 3), linear ordering is performed and the genetic distance is calculated with an SGS algorithm, and parting errors and parting loss in sample parting data are subjected to error correction and loss compensation with a KNN algorithm; and 4), the constructed map is subjected to accuracy evaluation, and the map quality is directly displayed with a visual method. According to the construction method of the parting High Map, the parting errors and the parting loss caused by high-throughput sequencing parting are effectively eliminated through parting error correction, and the accuracy of the constructed map is improved remarkably; the SGS sequencing algorithm is used, so that the sequencing speed is high, a High Map with more than one thousand markers in a single linkage group can be constructed, and the map drawing efficiency is improved remarkably; and the requirement for original parting data is reduced, and the parting error tolerance is improved greatly.
Owner:BIOMARKER TECH
Method for generating operating overall characteristic curve of prototype turbine
ActiveCN105631126AShorten the timeImprove drawing efficiencyGeometric CADData processing applicationsSimulationWorkload
Owner:POWERCHINA CHENGDU ENG
Method for rapidly simplifying and drawing complex leaf
ActiveCN101751694AEfficient extractionVersatility3D-image rendering3D modellingArray data structureViewpoints
The invention discloses a method for rapidly simplifying and drawing a complex leaf. The method comprises the following steps of: inputting a tree model and extracting leaf information so as to complete first-time simplification on the complex leaf in leafage; iteratively combining the leaves so as to complete second-time simplification; iteratively combining the leaves in a crown so as to complete third-time simplification; calculating the density of the leaves; respectively storing leaf geometric information and simplification information in two arrays and reading the information; according to a current viewpoint and a pixel error, secondarily searching for the arrays storing simplification information; and determining a proper detail level model drawing image of a canopy. The invention is fit for simplifying the complex leaves of different shapes. The simplification speed can be promoted by using distance limitation so as to realize efficiently abstracting and drawing of the detail level model of the canopy. The drawing speed can be improved by establishing a multi-resolution con-existing model of the crown by using density factors. The method of the invention can maintain the shape of the crown, efficiently overcome the deformation phenomenon and finally realize real-time roaming in a forest of tens of thousands of plants.
Owner:INST OF AUTOMATION CHINESE ACAD OF SCI
Method and system for updating screen display content
The invention discloses a method for updating screen display contents. The method comprises the following steps of: acquiring non-updated display contents and updated display contents when a screen display content updating event is detected; and judging whether same parts exist between the updated display contents and the non-updated display contents, if so, copying the non-updated display contents, drawing changed display contents, combining the copied non-updated display contents and the drawn changed display contents and display, otherwise, drawing the updated display contents and displaying. Moreover, the invention further relates to a system for updating screen display contents. In the method for updating screen display contents, the presence of same parts is judged by comparing the updated display contents with the non-updated display contents, if so, the same parts are copied, the changed contents are drawn, and the same parts are not required to be drawn, so that the updating drawing efficiency of the screen display contents is increased greatly.
Owner:TENCENT TECH (BEIJING) CO LTD
Rendering method and system of geographic information system
ActiveCN103035164AReduce drawing timeImprove drawing efficiencyMaps/plans/chartsGraphics libraryGeographic information system
The invention discloses a rendering method of a geographic information system. The rendering method comprises dividing a map layer needing to be displayed into a plurality of sublayers which comprise bottom layers and more than one hot spot layers, respectively creating display lists based on an Open graphics library (GL) for the bottom layers and each hot spot layer, and drawing the bottom layers and the hot spot layers by invoking the display lists corresponding to the bottom layers and the hot spot layers when a map needs to be rendered. The invention further provides a corresponding system. When the map is displayed or renewed, only changed sublayers need to be processed, not all sublayers need to be processed, and therefore the consumed time in mapping is reduced, mapping efficiency is improved, and display effect is further improved.
Owner:GUANGDONG VTRON TECH CO LTD
Method and system for quickly drawing complex scene based on process factory parameter model
The invention discloses a method and a system for quickly drawing a complex scene based on a process factory parameter model and relates to the technical field of quickly drawing the complex scene. The method comprises the following steps: analyzing the process factory parameter model, thereby acquiring an object contained in the model and an volume element contained in the object as well as parameter information of the volume element; establishing a scene tree based on an eight-fork tree structure, by using the object as a tissue unit; on the basis of a fractional number of the volume element, forming layering detail models with different resolution ratios; rejecting a vision field based on the layering of an encircled box of the scene tree; judging which object and which volume element of the object are located in the vision field; based on a view point, dynamically choosing the detail model used by the volume element; achieving the purpose of changing the resolution ratio of the volume element by changing the index arrays of the volume element; and performing backward rejection on the basis of parameter analysis expression of the volume element. By using the method provided by the invention, the real-time roam problem of the large-scale process factory model is solved, the real-time roam of the large-scale process factory model can be performed on a common PC (personal computer), the preprocessing time is short, and the occupancy rate of disk space is small.
Owner:北京中科辅龙智能技术有限公司
Method for elimination of electronic map interest point label covering of roads
ActiveCN104280035AFix coverage issuesReduce detection calculationInstruments for road network navigationAlgorithmDatabase
The invention discloses a method for elimination of electronic map interest point label covering of roads and relates to an electronic map modification method. The method comprises the following steps of A, carrying out mesh division on a specified level of road and interest point layers, making a road picture of each mesh and going to step B, B, if the road layer contains an unprocessed mesh, finding the unprocessed mesh and going to step C, or stopping the process otherwise, C, if the corresponding mesh in the interest point layer contains an unprocessed interest point, finding a label of the unprocessed interest point and going to step D, or going to the step B otherwise, D, if the mesh contains an unprocessed road, finding the unprocessed road and going to step E, or going to step G otherwise, E, carrying out suspicious road section search aiming at the interest point coordinates and labels on all the sections of the road, and if a suspicious road section exists, going to step F, or going to the step D otherwise, F, carrying out interest point label covering computation on the suspicious road section, and if the suspicious road section is covered, adjusting a label arrangement mode, labeling all the roads in the mesh as unprocessed roads and going to the step D, or going to step G otherwise, and G, writing the label into the road pictures in the mesh and executing the step C.
Owner:XIAMEN YAXON NETWORKS CO LTD
Ambient light occlusion method for microstructural surface object of screen space
InactiveCN101615300AEfficient drawingFast and efficient drawing of ambient occlusion effects3D-image renderingVisual spaceScreen space
The invention provides an ambient light occlusion method for a microstructural surface object of screen space. The method comprises the following two steps: drawing a scene under a view point, drawing depth information of a scene vertex under visual space in a piece of floating texture; and drawing a full-screen quadrangle, quickly calculating a value of the ambient light occlusion in image space by using an occlusion angle of an object according to the obtained depth texture, and outputting the value of the ambient occlusion onto a screen. The method can quickly calculate the ambient light occlusion for the microstructural surface object, and has the advantages of high efficiency and verisimilitude.
Owner:BEIHANG UNIV
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