LiDAR Point Cloud Manager - Revision history

ANK: /* Load */

2020-04-01T10:24:45Z

Load

← Older revision		Revision as of 12:24, 1 April 2020
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	==Load==		==Load==
	This function loads an OCAD LAS file (*.ocdLas) and opens the '''[[LiDAR_Point_Cloud_Manager#Manage\|LiDAR Point Cloud Manager]]'''.		This function loads an OCAD LAS file (*.ocdLas) and opens the '''[[LiDAR_Point_Cloud_Manager#Manage\|LiDAR Point Cloud Manager]]'''.
			Alternatively, just drag and drop an ocdLas file into the drawing area.

	The OCAD LAS file is a LiDAR point cloud in an OCAD internal file format created in the [[DEM_Import_Wizard#Create_ocdLas\|DEM Import Wizard]]. This file is optimized for fast access to the LiDAR points.		The OCAD LAS file is a LiDAR point cloud in an OCAD internal file format created in the [[DEM_Import_Wizard#Create_ocdLas\|DEM Import Wizard]]. This file is optimized for fast access to the LiDAR points.

MergeUser: /* Use filter */

2018-11-26T09:39:45Z

Use filter

← Older revision		Revision as of 11:39, 26 November 2018
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	===Use filter===		===Use filter===
	~~ToDO~~		Use filter to generalize the map.

	===Show area with no data in red color===		===Show area with no data in red color===
	Area with no data are shown in red color if the value is set to ''True''. Otherwise the cells are white and not specifiable from the forest cells. The filter option generalizes the raster map.		Area with no data are shown in red color if the value is set to ''True''. Otherwise the cells are white and not specifiable from the forest cells. The filter option generalizes the raster map.

MergeUser: /* Overlap Points from */

2018-11-26T09:36:08Z

Overlap Points from

← Older revision		Revision as of 11:36, 26 November 2018
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	===Overlap Points from===		===Overlap Points from===
	Overlap points is a classification type of LAS file format. These unclassified overlap points come from different scans (flight lines).		Overlap points is a classification type of LAS file format. These unclassified overlap points come from different scans (flight lines).
			Choose the lower threshold in which points should be considered as Undergrowth and Vegetation. If this as value is too low, ground points are used as undergrowth and vegetation points.

	===Use filter===		===Use filter===

MergeUser: /* Overlap Points from */

2018-11-26T09:31:58Z

Overlap Points from

← Older revision		Revision as of 11:31, 26 November 2018
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	===Overlap Points from===		===Overlap Points from===
	~~ToDO~~		Overlap points is a classification type of LAS file format. These unclassified overlap points come from different scans (flight lines).

	===Use filter===		===Use filter===
	ToDO		ToDO

ANK: /* Vegetation Base Map */

2018-11-26T08:50:33Z

Vegetation Base Map

← Older revision		Revision as of 10:50, 26 November 2018
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	===Undergroth and Vegetation===		===Undergroth and Vegetation===
	~~The calculation based on the NDVD (Normalized Difference Vegetation Density).~~
	The thresholds for the undergrowth and the vegetation shall be between -1.0 and +1.0. The thresholds can be calculated with samples in the '''[[LiDAR_Point_Cloud_Manager#Statistics\|Statistics]]''' function. The meaning of the thresholds is visible in the image below.

	~~[[File:LidarPointCloudManager Thresholds.png]]~~

	====Range From====		====Range From====
	Choose the range in which points should be considered as Undergrowth and Vegetation.		Choose the range in which points should be considered as Undergrowth and Vegetation.
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	====Thresholds====		====Thresholds====
	The thresholds for the undergrowth ~~is from~~ 0.~~0m to 1~~.~~0m and for~~ the ~~vegetation from 0~~.~~0m to 3~~.0m		The calculation based on the NDVD (Normalized Difference Vegetation Density).
			The thresholds for the undergrowth and the vegetation shall be between -1.0 and +1.0. The thresholds can be calculated with samples in the '''[[LiDAR_Point_Cloud_Manager#Statistics\|Statistics]]''' function. The meaning of the thresholds is visible in the image below.

			[[File:LidarPointCloudManager Thresholds.png]]

	===Overlap Points from===		===Overlap Points from===

ANK at 16:39, 22 November 2018

2018-11-22T16:39:11Z

← Older revision		Revision as of 18:39, 22 November 2018
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	This function reopens the '''LiDAR Point Cloud Manager''' with the already [[LiDAR Point Cloud Manager#Load\|loaded ocdLas file]].		This function reopens the '''LiDAR Point Cloud Manager''' with the already [[LiDAR Point Cloud Manager#Load\|loaded ocdLas file]].

	==~~Point Cloud~~==		==Filtering==
	This ~~functions~~ shows the LiDAR point cloud as image according to the settings in filtering options.		This function shows the LiDAR point cloud as image according to the settings in filtering options.

	[[File:LidarPointCloudManager PointCloud.png]]		[[File:LidarPointCloudManager PointCloud.png]]

	It is the same extent as on the drawing area. The pixel size depends on the zoom level in the drawing area. When moving the cursor over the point cloud image the coordinate of the mouse cursor is shown in the status bar.		It is the same extent as on the drawing area in the OCAD File. The pixel size depends on the zoom level in the drawing area. When moving the cursor over the point cloud image the coordinate of the mouse cursor is shown in the status bar.

	In the ''Filtering'' tab there are four different display options: Classification, Intensity, Height over ground and Vegetation density.		In the ''Filtering'' tab there are four different display options: Classification, Intensity, Height over ground and Vegetation density.

	==== Display Option Classification ====		==== Display Option Classification ====
	This option shows the classification of the LiDAR points. If more than one point is inside one cell then the point with the higher priority is shown. For example, the class ''Building'' has higher priority than ''Vegetation'' and ''Ground'' has the lowest priority.		This option shows the classification of the LiDAR points. If more than one point is inside one cell then the point with the higher priority is shown. For example, the class ''Building'' has higher priority than ''Vegetation'' and ''Ground'' has the lowest priority.
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	[[File:LidarPointCloudManager PointCloud Classification HeightAboveGround.png]]		[[File:LidarPointCloudManager PointCloud Classification HeightAboveGround.png]]

	==~~Profile==~~		==Vegetation Base Map==
	~~The profile shows the vegetation structure.~~

	~~In the OCAD window, choose any line symbol and draw a straight line inside the loaded ocdLas file and select the line object afterwards.~~

	~~In the LiDAR Point Cloud Manager window, choose the profile width and click the '''Show''' button. OCAD draws the profile according to the filter settings in the '''Filtering''' tab.~~

	~~[[File:LidarPointCloudManager Profile.png\|794px]]~~

	~~==Raster~~ Map==
	This function creates an ''Orienteering base map'' with user-defined information about the near-ground vegetation. Near-ground means between ground and 3m above.		This function creates an ''Orienteering base map'' with user-defined information about the near-ground vegetation. Near-ground means between ground and 3m above.
	When using this function the first time default values are set. The default values are optimized for [https://map.geo.admin.ch/?lang=en&topic=ech&bgLayer=ch.swisstopo.pixelkarte-farbe&layers=ch.swisstopo.zeitreihen,ch.bfs.gebaeude_wohnungs_register,ch.bav.haltestellen-oev,ch.swisstopo.swisstlm3d-wanderwege&layers_visibility=false,false,false,false&layers_timestamp=18641231,,,&X=229174&Y=680276&zoom=10&crosshair=marker Steinhauserwald] in Switzerland and LiDAR data from Canton Zürich. The settings depend on the forest type and the LiDAR data.		When using this function the first time default values are set. The default values are optimized for [https://map.geo.admin.ch/?lang=en&topic=ech&bgLayer=ch.swisstopo.pixelkarte-farbe&layers=ch.swisstopo.zeitreihen,ch.bfs.gebaeude_wohnungs_register,ch.bav.haltestellen-oev,ch.swisstopo.swisstlm3d-wanderwege&layers_visibility=false,false,false,false&layers_timestamp=18641231,,,&X=229174&Y=680276&zoom=10&crosshair=marker Steinhauserwald] in Switzerland and LiDAR data from Canton Zürich. The settings depend on the forest type and the LiDAR data.
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	[[File:LidarPointCloudManager RasterMap.png]]		[[File:LidarPointCloudManager RasterMap.png]]

	~~The cell~~ size ~~is 1m and~~ the ~~kernel~~ size ~~5x5 (5m x 5m)~~.		=== Cell size===
			Choose the cell size.

			===Undergroth and Vegetation===
	The calculation based on the NDVD (Normalized Difference Vegetation Density).		The calculation based on the NDVD (Normalized Difference Vegetation Density).
	The thresholds for the undergrowth and the vegetation shall be between -1.0 and +1.0. The thresholds can be calculated with samples in the '''[[LiDAR_Point_Cloud_Manager#Statistics\|Statistics]]''' function. The meaning of the thresholds is visible in the image below.		The thresholds for the undergrowth and the vegetation shall be between -1.0 and +1.0. The thresholds can be calculated with samples in the '''[[LiDAR_Point_Cloud_Manager#Statistics\|Statistics]]''' function. The meaning of the thresholds is visible in the image below.
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	[[File:LidarPointCloudManager Thresholds.png]]		[[File:LidarPointCloudManager Thresholds.png]]

			====Range From====
			Choose the range in which points should be considered as Undergrowth and Vegetation.

			====Neighborhood kernel====
			Choose the amount of neighbouring cells for the calculation.

			====Thresholds====
	The thresholds for the undergrowth is from 0.0m to 1.0m and for the vegetation from 0.0m to 3.0m		The thresholds for the undergrowth is from 0.0m to 1.0m and for the vegetation from 0.0m to 3.0m

			===Overlap Points from===
			ToDO
			===Use filter===
			ToDO
			===Show area with no data in red color===
	Area with no data are shown in red color if the value is set to ''True''. Otherwise the cells are white and not specifiable from the forest cells. The filter option generalizes the raster map.		Area with no data are shown in red color if the value is set to ''True''. Otherwise the cells are white and not specifiable from the forest cells. The filter option generalizes the raster map.

	Click the '''~~Draw~~''' button to calculate and show the ''Orienteering base map''. The map is drawn with the following colors:
			Click the '''Create''' button to calculate and show the ''Orienteering base map''. The map is drawn with the following colors:

	[[File:LidarPointCloudManager OrienteeringBaseMapColors.png]]		[[File:LidarPointCloudManager OrienteeringBaseMapColors.png]]
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	[[File:LidarPointCloudManager ThresholdsExcel.png]]		[[File:LidarPointCloudManager ThresholdsExcel.png]]

			==Profile==
			The profile shows the vegetation structure.

			In the OCAD window, choose any line symbol and draw a straight line inside the loaded ocdLas file and select the line object afterwards.

			In the LiDAR Point Cloud Manager window, choose the profile width and click the '''Show''' button. OCAD draws the profile according to the filter settings in the '''Filtering''' tab.

			[[File:LidarPointCloudManager Profile.png\|794px]]

ANK: /* Profile */

2018-07-26T13:02:55Z

Profile

← Older revision		Revision as of 15:02, 26 July 2018
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	The profile shows the vegetation structure.		The profile shows the vegetation structure.

	~~Draw~~ a straight line ~~in the drawing area~~ inside the loaded ocdLas file and select the line object.		In the OCAD window, choose any line symbol and draw a straight line inside the loaded ocdLas file and select the line object afterwards.

	~~Choose~~ the profile width and click the '''Show''' button. OCAD draws the profile according the filter settings in the '''Filtering''' tab.		In the LiDAR Point Cloud Manager window, choose the profile width and click the '''Show''' button. OCAD draws the profile according to the filter settings in the '''Filtering''' tab.

	[[File:LidarPointCloudManager Profile.png\|794px]]		[[File:LidarPointCloudManager Profile.png\|794px]]

ANK: /* Display Option Vegetation Density */

2018-07-26T12:57:26Z

Display Option Vegetation Density

← Older revision		Revision as of 14:57, 26 July 2018
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	[[File:LidarPointCloudManager_VegetationDensity.png]]		[[File:LidarPointCloudManager_VegetationDensity.png]]

	Click the '''Save''' button to create a geo-referenced png file from the current point cloud image and load it as new background map. The file is automatically saved in the same folder as the ocd file.		Click the '''Save image''' button to create a geo-referenced png file from the current point cloud image and load it as new background map. The file is automatically saved in the same folder as the ocd file.

	===Classification===		===Classification===

ANK: /* Display Option Height Over Ground */

2018-07-26T12:55:59Z

Display Option Height Over Ground

← Older revision		Revision as of 14:55, 26 July 2018
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	==== Display Option Height Over Ground====		==== Display Option Height Over Ground====
	This option shows the maximum height above ground for each cell. In this image high trees and vegetation boundaries can be detected.		This option shows the maximum height above ground for each cell. In this image, high trees and vegetation boundaries can be detected. The structure of the forest can be seen clearly.

	[[File:LidarPointCloudManager_HeightOverGround.png]]		[[File:LidarPointCloudManager_HeightOverGround.png]]

ANK: /* Display Option Classification */

2018-07-26T12:52:06Z

Display Option Classification

← Older revision		Revision as of 14:52, 26 July 2018
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	[[File:LidarPointCloudManager_Classification.png]]		[[File:LidarPointCloudManager_Classification.png]]

	''Ground = Brown, Low Vegetation = Dark Green, Medium Vegetation = Light Green, High Vegetation = Green, Buliding = Black, Low Point = Grey)''		''Ground = Brown, Low Vegetation = Dark Green, Medium Vegetation = Light Green, High Vegetation = Green, Buliding = Black, Low Point = Grey''

	====Display Option Intensity ====		====Display Option Intensity ====