Hello everyone, I have another article. Recently, my colleagues were working on ecological service-related projects and needed to operate vector data, so I checked the relevant information. Today I will share with you how to use Python’s GDAL library to implement raster to feature and feature to raster ( Convert raster and vector to each […]
Tag: raster
Robot control algorithm-How to use C++ to read raster maps in pgm format and convert them into data in ROS map format?
1.Introduction I am currently working on a global planning + local dynamic planning project. The current problem I am encountering is how to use C++ to process pgm map files. That is to say, map information must be combined with pixels. So we need to know the underlying principles of map reading and processing so […]
Add watermarks to WebGIS tile maps (vector tiles, raster tiles)
Watermark technology Watermark can provide strong evidence of the ownership of products receiving copyright information, and can monitor the spread of protected data, authenticate and control illegal copies, etc. It is also needed in today’s popular online maps Watermark technology protects map data. This article will introduce how to add watermarks to tile maps, including […]
ArcGIS arcpy code tool – batch raster to point file export attribute table
Directory of series articles ArcGIS arcpy code tool – batch modification of page layout settings of MXD files ArcGIS arcpy code tool – data-driven tool to export MXD documents in batches and export images simultaneously ArcGIS arcpy code tool – insert feature attribute table fields and feature screenshots into word templates ArcGIS arcpy code tool […]
Application Utility – Reading geospatial raster files using GDAL OpenCV v4.8.0
Previous tutorial: Adding a track bar to our application Next tutorial: Video input using OpenCV and similarity measurement Original author Marvin Smith Compatibility OpenCV >= 3.0 Geospatial raster data is a product heavily used in geographic information systems and photogrammetry. Raster data can often represent images and digital elevation models (DEMs). The standard library for […]
The point cloud displayed in rviz is perpendicular to the grid. Convert the saved pcd file to a point cloud and display it in rviz, and use octomap_server to convert the point cloud map into an octree map and an occupied raster map.
Article directory Problem: Point cloud is perpendicular to grid background Solution: Transform the point cloud coordinates, rotate 90 degrees around the x-axis, and point the z-axis upward. Convert pcd to point cloud and display point cloud image in RVIZ Create launch rviz display Problem: Point cloud is perpendicular to the grid When using lego-loam to […]
C++ language GDAL batch cropping of multi-band raster images: cropping based on the number of pixels
This article introduces the GDAL module based on the C + + language. According to the given number of pixel rows and number of columns strong>, batch crop a large number of multi-band raster remote sensing image files, and save the resulting cropped new multi-band remote sensing image files Method at the specified path. In […]
Cartographer’s principle of constructing multi-resolution raster maps
1. Foreword In Cartographer, using the branch-and-bound method for loop closure detection requires constructing a multi-resolution raster map for the subgraphs. Its implementation source code is in the PrecomputationGrid2D constructor in fast_correlative_scan_matcher_2d.cc. This part of the code is a bit difficult to read, but you can understand it if you take a moment. This article […]
Computer Graphics Games101 Assignment 2 —- Triangular Rasterization, Supersampling Anti-Aliasing, Black Edge Processing
Games101 Assignment 2 —- Triangle rasterization, supersampling anti-aliasing, black edge processing (This article is a collection of notes compiled based on coursework while studying computer graphics. Please point out any errors. If this is the same course, please do not copy and paste, thank you!) Article directory CG_homework1 0. This assignment implements the function and […]
openlayers wms/wmts raster layer click point pixel value query
Table of Contents 1. WMS raster layer pixel value query 2. Wmts raster layer pixel value query 3. Browser knowledge supplement Note: For wms raster layer pixel value query, the corresponding url address can be obtained with getGetFeatureInfoUrl, but wmts does not have a built-in getFeatureInfoUrl 1. wms raster layer pixel value query The getGetFeatureInfoUrl […]