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Method for processing vector graph by utilizing key proportional scale and similar tile technology

A technical processing and scaling technology, applied in the field of graphics processing, can solve the problems of long response time and low efficiency, and achieve the effect of improving the response speed

Active Publication Date: 2018-10-12
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to solve a series of problems such as long response time and low efficiency of opening or operating large data topographic maps in current electronic topographic map production software, and uses tile-like technology to propose the concept of "SSR" to classify large-file vector graphics. Block organization is conducive to fast processing when scheduling the above vector diagrams, saving time

Method used

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  • Method for processing vector graph by utilizing key proportional scale and similar tile technology
  • Method for processing vector graph by utilizing key proportional scale and similar tile technology
  • Method for processing vector graph by utilizing key proportional scale and similar tile technology

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Embodiment Construction

[0057] The present invention will be described in detail below in conjunction with the examples.

[0058] A method for processing vector graphics using key scales and tile-like technology of the present invention, comprising the following steps:

[0059] S1: Classify the elements in the vector map and name the layers;

[0060] S2: Carry out rectangular blocks for each level and number them;

[0061] S3: Find the key scale of each level and calculate the display scale of this level, then store;

[0062] S4: Determine the tiles and number them, that is, the elements that fall into or intersect with the same rectangular block in each level are collected together to generate tiles. The shape of the tiles is a rectangle, and the size of the tiles is the largest outer rectangle of all elements in it. ;The position of the tile is determined by the center point of the tile rectangle, and the tile serial number rule is:

[0063] Tile serial number = layer name + corresponding rectan...

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Abstract

The invention discloses a method for processing a vector graph by utilizing a key proportional scale and a similar tile technology. The method comprises the following steps of performing grading on elements in a topographic map and naming levels; performing rectangular block segmentation on each level, and performing numbering; calculating out the key proportional scale of each level, calculatingout a display scale of the level, and performing storage; determining tiles and performing numbering; and performing storage on each piece of tile data, comprising a tile number, a size, a position and graphic data, as a whole body. According to the storage method, the response speed can be remarkably increased during opening as well as panning and zooming of the vector graph in quality graph making software.

Description

technical field [0001] The invention relates to the field of graphics processing, in particular to a method for processing vector graphics by using key scales and tile-like technology. Background technique [0002] A vector diagram, also known as an object-oriented image or a drawing image, is defined mathematically as a series of points connected by lines. Graphical elements in vector files are called objects. Each object is a self-contained entity with attributes such as color, shape, outline, size, and screen position. Vector graphics draw graphics according to geometric characteristics. Vectors can be a point or a line. Vector graphics can only be generated by software, and the internal space of the file is small, because this type of image file contains independent separate images, which can be freely and freely Restricted regrouping. Its feature is that the image will not be distorted after being enlarged, and it has nothing to do with the resolution. It is suitable...

Claims

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Application Information

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IPC IPC(8): G06F17/30G06T11/20
CPCG06T11/206
Inventor 刘德儿陶小明
Owner JIANGXI UNIV OF SCI & TECH
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