Method and device for progressive transmission of spatial data
A technology of spatial data and transmission methods, applied in image data processing, electrical digital data processing, special data processing applications, etc., can solve the problems of increasing data volume, low efficiency and accuracy of spatial information transmission
Active Publication Date: 2013-12-04
SUZHOU SUPERENGINE FOR GRAPHICS & IMASOFTWARE TECH DEV
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Compared with the increase of the existing network bandwidth, the amount of data transmitted by spatial information is growing explosively, which is not conducive to real-time processing of spatial data, and the efficiency and accuracy of the processing process are relatively low.
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[0125] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0126] For the convenience of description, in this application document, the spatial data to be processed is called the original spatial data, the coordinates of the spatial data to be processed are called the original coordinates of the original spatial data, and the coordinate points of the spatial data to be processed are called the original The original coordinate point of the spatial data, or directly called the original coordinate point.
[0127] The inv...
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The invention discloses a method and a device for processing, simplification and progressive transmission of spatial data. The method comprises the following steps of according to preset view control parameters, analyzing mutual relation among the pixels needing to be drawn of all coordinate points in the spatial data when the coordinate points are displayed in a view window determined by the view control parameters; according to the analyzed result and set processing methods corresponding to processing types, processing the spatial data, wherein the processing process comprises one or a combination of analysis, selection, simplification and progressive transmission of the spatial data. The method disclosed by the invention has the advantages that the processing process of the spatial data can adopt the mutual relation among the pixels needing to be drawn of all the coordinate points in the spatial data when the coordinate points are displayed in the view window as the basis, so that the efficiency and the accuracy rate in the processing process are improved.
Description
[0001] This application is a divisional application of a Chinese application entitled "Spatial Data Processing, Simplification and Progressive Transmission Method and Device", application number 201210104250.0, and application date of April 11, 2012, and enjoys application number 201110093024.2 , The priority of the Chinese application with the filing date on April 14, 2011. technical field [0002] The invention relates to the fields of spatial information technology, computer graphics and computer operating systems, in particular to a method and device for processing, simplifying and progressively transmitting spatial data. Background technique [0003] The view representation of spatial data is mainly displayed through an electronic map. An electronic map is a visual map that displays spatial data on an electronic screen through certain hardware and software. It is a grid of spatial data on an electronic screen (view window). display process. [0004] The view is an inte...
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IPC IPC(8): G06F17/30
CPCG06T15/00G06F17/30G06T17/05
Inventor 董福田
Owner SUZHOU SUPERENGINE FOR GRAPHICS & IMASOFTWARE TECH DEV