Map data processing method and apparatus, and storage medium

Patent metadata

Field	Value
Publication number	US-12198236-B2
Application number	US-202217807132-A
Country	US
Kind code	B2
Filing date	Jun 15, 2022
Priority date	Aug 20, 2021
Publication date	Jan 14, 2025
Grant date	Jan 14, 2025

Abstract

Provided are a map data processing method and apparatus, and a storage medium, which relate to the field of data processing technology and, in particular, to artificial intelligence technology, for example, computer vision, map technology, and intelligent transportation. A specific implementation solution includes: processing landform coverage data according to a type of surface species coverage and a data processing rule associated with the type of surface species coverage to obtain a surface species coverage effect map; and generating a landform map according to the surface species coverage effect map and a reference map.

First claim

What is claimed is:

1. A map data processing method, comprising:
processing landform coverage data according to a type of surface species coverage and a data processing rule associated with the type of surface species coverage to obtain a surface species coverage effect map; and
generating a landform map according to the surface species coverage effect map and a reference map;
wherein processing the landform coverage data according to the type of surface species coverage and the data processing rule associated with the type of surface species coverage to obtain the surface species coverage effect map comprises:
extracting species coverage region data corresponding to the type of surface species coverage from the landform coverage data according to the type of surface species coverage;
correcting a type of surface species coverage for error data in the species coverage region data according to a region adjoining relationship of the species coverage region data, wherein the error data is data about a species coverage region whose area is less than an area threshold;
performing, according to a region mapping rule associated with the type of surface species coverage, combination and rendering on species coverage region data belonging to a same type of surface species coverage after an update as one layer to generate an initial surface species coverage effect map; and
adjusting, according to a type adjustment rule associated with the type of surface species coverage, a type of surface species coverage for species coverage region data in the initial surface species coverage effect map to obtain a final surface species coverage effect map.

2. The method according to claim 1 , after performing the combination and the rendering on the species coverage region data belonging to the same type of surface species coverage after the update as the one layer, further comprising:
in response to a region overlapping relationship existing between species coverage region data in at least two layers, adjusting, according to an area size relationship between regions corresponding to the species coverage region data in the at least two layers, locations where the at least two layers in which the species coverage region data is located are displayed.

3. The method according to claim 1 , wherein adjusting, according to the type adjustment rule associated with the type of surface species coverage, the type of surface species coverage for the species coverage region data in the initial surface species coverage effect map comprises:
extracting a layer where each type of surface species coverage is located from the initial surface species coverage effect map; and
adjusting species coverage region data in each layer and a type of surface species coverage for the species coverage region data according to a layer level of the type of surface species coverage and an intersection-difference relationship between reference region data of the reference map and the species coverage region data in the each layer.

4. The method according to claim 1 , wherein extracting the species coverage region data corresponding to the type of surface species coverage from the landform coverage data according to the type of surface species coverage comprises:
extracting a species coverage region corresponding to the type of surface species coverage from the landform coverage data according to a grayscale range corresponding to the type of surface species coverage; and
extracting a region contour of the species coverage region and performing coordinate vector conversion on extracted contour data to obtain the species coverage region data corresponding to the type of surface species coverage.

5. The method according to claim 4 , before extracting the species coverage region corresponding to the type of surface species coverage from the landform coverage data, further comprising:
downsampling the landform coverage data and remapping the type of surface species coverage.

6. The method according to claim 1 , further comprising:
determining an effect map of a river system according to data about the river system; and
determining a terrain effect map according to terrain elevation data;
wherein correspondingly, generating the landform map according to the surface species coverage effect map and the reference map comprises:
generating the landform map according to the effect map of the river system, the terrain effect map, the surface species coverage effect map, and the reference map.

7. A map data processing apparatus, comprising:
at least one processor; and
a memory communicatively connected to the at least one processor;
wherein the memory stores an instruction executable by the at least one processor, and the at least one processor is configured to:
process landform coverage data according to a type of surface species coverage and a data processing rule associated with the type of surface species coverage to obtain a surface species coverage effect map; and
generate a landform map according to the surface species coverage effect map and a reference map;
wherein the at least one processor is configured to:
extract species coverage region data corresponding to the type of surface species coverage from the landform coverage data according to the type of surface species coverage;
correct a type of surface species coverage for error data in the species coverage region data according to a region adjoining relationship of the species coverage region data, wherein the error data is data about a species coverage region whose area is less than an area threshold;
perform, according to a region mapping rule associated with the type of surface species coverage, combination and rendering on species coverage region data belonging to a same type of surface species coverage after an update as one layer to generate an initial surface species coverage effect map; and
adjust, according to a type adjustment rule associated with the type of surface species coverage, a type of surface species coverage for species coverage region data in the initial surface species coverage effect map to obtain a final surface species coverage effect map.

8. The apparatus according to claim 7 , wherein the at least one processor is further configured to:
in response to a region overlapping relationship existing between species coverage region data in at least two layers, adjust, according to an area size relationship between regions corresponding to the species coverage region data in the at least two layers, locations where the at least two layers in which the species coverage region data is located are displayed.

9. The apparatus according to claim 7 , wherein the at least one processor is configured to:
extract a layer where each type of surface species coverage is located from the initial surface species coverage effect map; and
adjust species coverage region data in each layer and a type of surface species coverage for the species coverage region data according to a layer level of the type of surface species coverage and an intersection-difference relationship between reference region data of the reference map and the species coverage region data in the each layer.

10. The apparatus according to claim 7 , wherein the at least one processor is configured to:
extract a species coverage region corresponding to the type of surface species coverage from the landform coverage data according to a grayscale range corresponding to the type of surface species coverage; and
extract a region contour of the species coverage region and perform coordinate vector conversion on extracted contour data to obtain the species coverage region data corresponding to the type of surface species c

Assignees

• Beijing Baidu Netcom Sci & Tech Co Ltd

Inventors

• Hou Xiaopei
• Zhang Junjun
• Sheng Changjun
• Tong Juntao
• Fu Jiajing
• Ma Dan
• Niu Yingjie
• Liu Wenya
• Zhang Yuke
• Zhao Yun
• Chen Youhan
• Han Xiufeng
• Xia Xiulong
• Zhang Yang

Classifications

• G06T11/26

  Drawing of charts or graphs · CPC title

• G06F16/29 Primary

  Geographical information databases · CPC title

• G06T7/13

  Edge detection · CPC title

• G06V20/13

  Satellite images · CPC title

• G06T11/00

  Two-dimensional [2D] image generation · CPC title