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Apparatus for determining dot mark position in image terminal device, system and method thereof

一种终端设备、确定装置的技术，应用在测量装置、图像数据处理、地图/平面图/图表等方向，能够解决标注间重叠、标注缺损、标注效率低等问题，达到降低服务处理开销、满足大量用户并发申请的效果

Inactive Publication Date: 2006-11-08
INT BUSINESS MASCH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But simply calling the point labeling results in the server, when the scale is changed, there will be overlapping between labels, low labeling efficiency, and labeling defects, etc.

Method used

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  • Apparatus for determining dot mark position in image terminal device, system and method thereof
  • Apparatus for determining dot mark position in image terminal device, system and method thereof
  • Apparatus for determining dot mark position in image terminal device, system and method thereof

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Embodiment Construction

[0059] In the following embodiments, the server is used as a point to mark the position determination device.

[0060] The point labeling problem is first described with mathematical symbols.

[0061] Set the size of the label window R to be W×H. P={p 1 ,p 2 ,...,p n} is the set of two-dimensional space points to be marked. p i The coordinates are (x i ,y i ), and satisfy 0≤x i ≤w, 0≤y i ≤H. Assume that for each point p i There are four candidate label positions (1, 2, 3, 4). C i is p i The set of candidate label positions, where C is uniformly taken i =C={1, 2, 3, 4}, that is, use 4 axisymmetric rectangles to mark the position, such as Figure 8 As shown, the four label positions of a point have different priorities from aesthetic considerations, Figure 8 Smaller numbers have higher priority. These four rectangles are denoted as r i (1), r i (2) , r i (3) , r i (4) , point p i The label rectangle r i size is w i × h i . If the conditions are met:...

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Abstract

The invention proposes a point labeling position determining device, a terminal device, a system and a method for determining point labeling in a graph in a network system. The point marking position determination device, terminal equipment, system and method are applicable to the graph browsing service based on the session mode. Firstly, the rule-based static point label determination method is applied to obtain the initial results at a certain scale. When the user browses and applies for services on the map, the incremental label determination method is used to complete the user request based on the initial label results. The incremental determination method greatly reduces the service processing overhead, which can satisfy a large number of concurrent applications of users. This determination method has been successfully applied in location-based information service systems.

Description

technical field [0001] The present invention relates to a device, terminal equipment, system and method for determining point labeling positions in a graph, and in particular to a device, terminal device, system and method for determining point labeling positions of graphs in a network geographic information system. Background technique [0002] Labeling points on a map is a traditional research topic. For example, labeling points on a map is a classic problem in cartography and a key issue in geographic information systems. The so-called labeling of points on the map is an example of simple map labeling. For example, all cities on the Chinese map are marked with their city names, which is their labeling. figure 1 Given a map of an area near Beijing, the points in the map have been marked. However, the labeling method used in this picture does not conform to the optimal labeling point of view: the point of Xisanqi in the upper left corner of the picture is no longer in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/00G09B29/00G06T17/05G06T17/40G09B29/10G09G5/00
CPCG01C21/3673G06T17/05G06T19/00G06T2219/004G09B29/106
Inventor 陈滢于秀兰饶芳艳
Owner INT BUSINESS MASCH CORP