{"id":64155,"date":"2021-12-09T09:17:49","date_gmt":"2021-12-09T15:17:49","guid":{"rendered":"https:\/\/gisgeography.com\/?p=64155"},"modified":"2025-04-05T21:23:17","modified_gmt":"2025-04-06T02:23:17","slug":"point-cloud","status":"publish","type":"post","link":"https:\/\/gisgeography.com\/point-cloud\/","title":{"rendered":"What is a Point Cloud?"},"content":{"rendered":"<style>.kb-image64155_cead9d-c6 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image64155_cead9d-c6 size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"678\" height=\"393\" src=\"https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-LiDAR-678x393.png\" alt=\"Point Cloud LiDAR\" class=\"kb-img wp-image-64157\" srcset=\"https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-LiDAR-678x393.png 678w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-LiDAR-300x174.png 300w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-LiDAR-768x446.png 768w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-LiDAR-50x29.png 50w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-LiDAR-200x116.png 200w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-LiDAR-425x247.png 425w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-LiDAR-550x319.png 550w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-LiDAR-115x67.png 115w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-LiDAR-1265x734.png 1265w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-LiDAR-360x209.png 360w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-LiDAR.png 1463w\" sizes=\"auto, (max-width: 678px) 100vw, 678px\" \/><\/figure>\n\n\n\n<div class=\"wp-block-group\" style=\"padding-top:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30)\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\">What is a Point Cloud?<\/h2>\n\n\n\n<p>A <strong>point cloud<\/strong> is a collection of points for dynamically storing data commonly from LiDAR systems.<\/p>\n\n\n\n<p>A liDAR is a sampling tool that sends over 160,000 pulses per second. Each 1-meter pixel contains <strong>about 15 pulses of light<\/strong>.<\/p>\n\n\n\n<p>Once the LiDAR system collects each individual reading, the processed data becomes point cloud data.<\/p>\n\n\n\n<p>And pulses of light represent the millions of point data in a point cloud.<\/p>\n\n\n\n<p><strong>READ MORE:<\/strong> <a href=\"https:\/\/gisgeography.com\/lidar-light-detection-and-ranging\/\">A Complete Guide to LiDAR: Light Detection and Ranging<\/a><\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group\" style=\"padding-top:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40)\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\">Point Cloud Attributes<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"678\" height=\"355\" src=\"https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/LiDAR-Point-Cloud-Terrestrial-678x355.jpg\" alt=\"LiDAR Point Cloud Terrestrial\" class=\"wp-image-97496\" style=\"width:450px\" srcset=\"https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/LiDAR-Point-Cloud-Terrestrial-678x355.jpg 678w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/LiDAR-Point-Cloud-Terrestrial-300x157.jpg 300w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/LiDAR-Point-Cloud-Terrestrial-768x402.jpg 768w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/LiDAR-Point-Cloud-Terrestrial.jpg 800w\" sizes=\"auto, (max-width: 678px) 100vw, 678px\" \/><\/figure>\n<\/div>\n\n\n<p>Each point stores information (components) with multiple attributes that describe each point.<\/p>\n\n\n\n<p>At the most basic level, attributes include <strong>X, Y, and Z coordinates<\/strong>. Each point is checked with GPS timestamps and inertial measurement units.<\/p>\n\n\n\n<p>But point clouds can also store attribute information about the <strong>intensity<\/strong>, <strong>color<\/strong>, and <strong>time<\/strong> as well. When a LiDAR system scans the ground, the entire set of points is unclassified in regards to what they hit on the surface.<\/p>\n\n\n\n<p>Automated routines assist in classifying point clouds. For example, classes can include ground, vegetation (low, medium, and high), building, water, etc. Sometimes, point classification may fall into more than one category.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group\" style=\"padding-top:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40)\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\">LiDAR Formats<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright\"><img loading=\"lazy\" decoding=\"async\" width=\"425\" height=\"247\" src=\"https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-RGB-425x247.png\" alt=\"Point Cloud RGB\" class=\"wp-image-64158\" srcset=\"https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-RGB-425x247.png 425w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-RGB-300x174.png 300w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-RGB-678x393.png 678w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-RGB-768x446.png 768w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-RGB-50x29.png 50w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-RGB-200x116.png 200w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-RGB-550x319.png 550w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-RGB-115x67.png 115w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-RGB-1265x734.png 1265w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-RGB-360x209.png 360w, https:\/\/gisgeography.com\/wp-content\/uploads\/2021\/12\/Point-Cloud-RGB.png 1463w\" sizes=\"auto, (max-width: 425px) 100vw, 425px\" \/><\/figure>\n<\/div>\n\n\n<p>The most common <a href=\"https:\/\/gisgeography.com\/gis-formats\/\">file format<\/a> to store point cloud data is a LAS file format. This binary file format maintains information specific to LIDAR <strong>without the loss of information<\/strong>.<\/p>\n\n\n\n<p>LAS files are available for public use and are not a proprietary file format like ASCII. The dense <strong>networks of points<\/strong> are so large that LiDAR splits point data into several files.<\/p>\n\n\n\n<p>When you compress a LAS file, the reduced file format becomes LAZ. By using this file format, you can save significant storage space without information loss.<\/p>\n\n\n\n<p>Lastly, LAS Datasets (LASD) are a type of reference or pointer type of dataset specifically for <a href=\"https:\/\/gisgeography.com\/what-is-arcgis\/\">Esri ArcGIS<\/a>. Not only can you obtain 3D point properties, but you can also build triangulated surfaces and elevation models with LAS Datasets.<\/p>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>A point cloud is a collection of points for storing data in LiDAR systems.  Pulses of light represent the millions of points in a point cloud.<\/p>\n","protected":false},"author":2,"featured_media":64157,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"default","_kad_post_title":"default","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[92],"tags":[45],"class_list":["post-64155","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-remote-sensing","tag-lidar"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is a Point Cloud? - GIS Geography<\/title>\n<meta name=\"description\" content=\"A point cloud is a collection of points for storing data in LiDAR systems. 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