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Method and device for generating thinned images

An image and thinning range technology, which is applied in image enhancement, image data processing, instruments, etc., can solve the problems of complex thinning methods, and achieve the effect of simple operation and good thinning effect.

Active Publication Date: 2020-04-24
深圳市数字城市工程研究中心
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a thinning image generation method and device, aiming to solve the problem that the thinning method in the prior art is too complicated

Method used

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  • Method and device for generating thinned images
  • Method and device for generating thinned images
  • Method and device for generating thinned images

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Embodiment Construction

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] An embodiment of the present invention provides a method for generating a thinned image, figure 1 is a flow chart of a method for generating a thinned image provided by an embodiment of the present invention, such as figure 1 As shown, the method specifically includes step S110 to step S150.

[0033] Step S110, determining a thinning range of the original image, wherein the thinning range includes a plurality of original points.

[0034] The original image in this embodiment is a two-dimensional image, and for the convenience of subsequent processing, the ...

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Abstract

The invention provides a method and device for generating a thinned image. The method includes: determining the thinning range of the original image, wherein the thinning range includes a plurality of original points; reading point group data, and The original points constitute a point group, and the point group data includes the position information of the original points; determine the number of retained points, which are the original points taken out when thinning out the original image; divide the point group into multiple sub-point groups according to the position information, and According to the proportion of the sub-point group in the point group and the number of retained points, the retained points are extracted from the sub-point group; a thinned image is generated based on the retained points. This invention divides the point set in the original image into multiple sub-point groups, and achieves thinning of the original image by taking points from each sub-point group respectively. This method is simple to operate, and the thinned image has the same distribution characteristics as the original image. Similar, achieving better thinning effect.

Description

technical field [0001] The invention relates to the field of spatial data processing, in particular to a method and device for generating thinned images. Background technique [0002] In Geographic Information System (Geographic Information System or Geo-Informationsystem, referred to as GIS), point group is a commonly used form, but sometimes too large number of point groups is not only not conducive to calculation and rendering, but may affect the distribution characteristics. identify. Therefore, in some cases, it is necessary to thin out the point groups in the image. [0003] The prior art provides some thinning methods, but the operation is often complicated. [0004] For the problem of how to simplify the thinning method, there is currently no ideal solution in the industry. Contents of the invention [0005] The purpose of the present invention is to provide a thinning image generation method and device, aiming at solving the problem that the thinning method in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00
CPCG06T5/92
Inventor 贺彪张钰郭仁忠陈学业赵志刚李晓明王伟玺黄威
Owner 深圳市数字城市工程研究中心
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