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dev:desktop_ext:mapping:manage:pointcloud_ortho [2021/10/28 12:30] paulien [Colorize Point Cloud] |
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- | ====== Process Data ====== | ||
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- | This page describes how to use the desktop mobile mapping administration procedures Process Data: Ortho from Panoramas, Ortho from Point Cloud and Colorize Point Cloud. | ||
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- | {{orbitgis: | ||
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- | ===== Concepts ====== | ||
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- | The "Ortho from Panoramas" | ||
- | There are 2 options for producing orthos: | ||
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- | 1. From the point cloud top view ((Process Point Cloud Image is possible for all [[dev: | ||
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- | 2. From the panoramas. Orthos from panoramas can only be made for the ground/ | ||
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- | The " | ||
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- | ===== Ortho from Panoramas ===== | ||
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- | ==== Preparation ==== | ||
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- | - Start the process until at least one *.BMP file appears in the folder //<Orbit run>/ | ||
- | - Copy the *.BMP file to another folder of your choice. | ||
- | - Cancel the process in Orbit Desktop. | ||
- | - Drag and drop the *.BMP file into Orbit Desktop. | ||
- | - Make two vector files and save both vector files in the folder //<Orbit run>/ | ||
- | - Vehicle.ovf: | ||
- | - VehicleAxis.ovf: | ||
- | - Start the process using the settings of your choice. For an overview, see below. | ||
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- | An example of the two vector files can be downloaded here: {{: | ||
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- | {{: | ||
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- | ==== Parameters ==== | ||
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- | {{ : | ||
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- | === Ground reference === | ||
- | Choose the reference to define the ground. Either a fixed ground height based on the camera height or a variable ground height based on the point cloud. | ||
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- | === Coordinate system=== | ||
- | Choose the coordinate reference system of the Ortho Image that will be created. Note that these 2D orthos can only be produced in a projected coordinate system. Input data might be in any projection system (projected or geographical).\\ | ||
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- | === Resolution in meter=== | ||
- | Resolution defines ground sample distance of the output in meters. It can be adjusted depending on the quality of the input data. \\ | ||
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- | === Radius in meter=== | ||
- | Radius defines extensions of the ortho: it is measured from the camera position. | ||
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- | === Result=== | ||
- | The result is an orthoimage of the panoramas, stored as an [[dev: | ||
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- | ==== Examples ==== | ||
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- | === Mobile mapping === | ||
- | {{: | ||
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- | === TIMMS=== | ||
- | {{: | ||
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- | ===== Ortho from Point Cloud ===== | ||
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- | {{ : | ||
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- | === Coordinate system=== | ||
- | Choose the coordinate reference system of the Ortho Image that will be created. Note that these 2D orthos can only be produced in a projected coordinate system. Input data might be in any projection system (projected or geographical). | ||
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- | === Resolution in meter=== | ||
- | The resolution defines the pixel resolution expressed in meters of the point cloud images. \\ | ||
- | Depending on the density of your point cloud the resolution can be adjusted : | ||
- | * 1 or 2 centimeter resolution for high-density point clouds | ||
- | * 5 or 10 centimeter resolution for low-density point clouds | ||
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- | === Point Cloud Legend=== | ||
- | A legend for the point cloud image can be set. \\ | ||
- | If RGB and intensity information is available, an according image can be created. An image by fixed color or height is always possible. | ||
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- | Only one point cloud image can be created for each legend type: \\ | ||
- | RGB, intensity, height, fixed color. \\ | ||
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- | === Result=== | ||
- | The result is an orthoimage of the point cloud, stored as an OMI within the Orbit Run structure (<Orbit Run directory> | ||
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- | ==== Examples ==== | ||
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- | === Colorization by RGB=== | ||
- | {{ mobile_mapping: | ||
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- | === Colorization by Intensity=== | ||
- | {{ mobile_mapping: | ||
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- | ===== Colorize Point Cloud ===== | ||
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- | {{ : | ||
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- | === Color by === | ||
- | * Position: Each point of the point cloud will be colored corresponding to the image that is spatially closest to that point. | ||
- | * Time: Each point of the point cloud will be colored corresponding to the image that was taken closest in time to when the point was captured. | ||
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- | === Max photo === | ||
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- | Indicate how many photos are maximally used to colorize the pointcloud. Depending on the distance between the photo positions, increase or decrease this number. | ||
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- | === Mask === | ||
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- | Apply a mask on the imagery to exclude parts that shouldn' | ||
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- | Set the mask color after selecting a mask. | ||
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Last modified:: 2021/10/28 12:30