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

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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 proposes a method and a device for generating a compressed image. The method comprises: determining the compressing area of an original image wherein the compressing area consists of a plurality of original points; reading the point cluster data wherein the point cluster are formed by the original points in the compressing area and the point cluster data consists of the position information of the original points; determining the quantity of the kept points wherein the kept points are the original points extracted during the compressing of the original image; cutting the point cluster according to the position information into a plurality of sub-point clusters; according to the proportion of the sub-point clusters in the point cluster as well as the quantity of the kept points, extracting from the sub-point clusters the kept points; and based on the kept points, generating a compressed image. According to the invention, the point cluster of an original image is cut into a plurality of sub-point clusters and through the point extraction in the various sub-point clusters, the compression to the original image is realized. The method can be performed easily, and the distribution characteristics of the compressed image are similar to those of the original image, which achieves a good compression 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
CPCG06T5/009
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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