OTB.DisparityMapToElevationMap: Projects a disparity map into a regular elevation map.

This application uses a disparity map computed from a stereo image pair to produce an elevation map on the ground area covered by the stereo pair.This application is part of the stereo reconstruction pipeline. It can be used after having computed the disparity map with BlockMatching.The needed inputs are : the disparity map, the stereo pair (in original geometry) and the epipolar deformation grids. These grids (computed by StereoRectificationGridGenerator) have to contain the transform between the original geometry (stereo pair) and the epipolar geometry (disparity map). The algorithm for each disparity is the following : * skip if position is discarded by the disparity mask * compute left ray : transform the current position from epipolar geometry to left sensor geometry (left rectification grid) * compute right ray : shift the current position with current disparity and transform from epipolar geometry to right sensor (right rectification grid) * estimate best 3D intersection between left and right rays * for the ground cell of the obtained 3D point, keep its elevation if greater than current elevation (keeps the maximum of elevations of all 3D points in each cell)Minimum and maximum elevations settings are here to bound the reconstructed DEM.

Inputs

The input disparity map (horizontal disparity in first band, vertical in second). This map can be computed by BlockMatching application.

format
href
Please set a value for io.in.

Left image in original (sensor) geometry. Only the geometric model of this image will be used, not the pixel values.

format
href
Please set a value for io.left.

Right image in original (sensor) geometry. Only the geometric model of this image will be used, not the pixel values.

format
href
Please set a value for io.right.

Left epipolar grid (deformation grid between left sensor et disparity spaces)

format
href
Please set a value for io.lgrid.

Right epipolar grid (deformation grid between right sensor et disparity spaces)

format
href
Please set a value for io.rgrid.

Output elevation map in ground projection. Elevation values are in meters. Floating point pixel type are expected.

string
Please set a value for io.out.

Masked disparity pixels won't be projected (mask values equal to zero)

format
href
Please set a value for io.mask.

Spacing of the output elevation map (in meters)

number
Please set a value for step.

Minimum elevation expected (in meters)

number
Please set a value for hmin.

Maximum elevation expected (in meters)

number
Please set a value for hmax.

This parameter allows selecting a directory containing Digital Elevation Model files. Note that this directory should contain only DEM files. Unexpected behaviour might occurs if other images are found in this directory.

string

Use a geoid grid to get the height above the ellipsoid in case there is no DEM available, no coverage for some points or pixels with no_data in the DEM tiles. A version of the geoid can be found on the OTB website(https://gitlab.orfeo-toolbox.org/orfeotoolbox/otb-data/blob/master/Input/DEM/egm96.grd).

format
href
Please set a value for elev.geoid.

This parameter allows setting the default height above ellipsoid when there is no DEM available, no coverage for some points or pixels with no_data in the DEM tiles, and no geoid file has been set. This is also used by some application as an average elevation value.

number
Please set a value for elev.default.

Available memory for processing (in MB)

integer

Outputs

Output elevation map in ground projection. Elevation values are in meters. Floating point pixel type are expected.

format
transmission

Execution options

successUri
inProgressUri
failedUri

format

mode

Execute End Point

View the execution endpoint of a process.

View the alternative version in HTML.

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The algorithm for each disparity is the following : * skip if position is discarded by the disparity mask * compute left ray : transform the current position from epipolar geometry to left sensor geometry (left rectification grid) * compute right ray : shift the current position with current disparity and transform from epipolar geometry to right sensor (right rectification grid) * estimate best 3D intersection between left and right rays * for the ground cell of the obtained 3D point, keep its elevation if greater than current elevation (keeps the maximum of elevations of all 3D points in each cell)Minimum and maximum elevations settings are here to bound the reconstructed DEM.", "version": "1.0.0", "jobControlOptions": ["sync-execute", "async-execute", "dismiss"], "outputTransmission": ["value", "reference"], "links": [{"rel": "http://www.opengis.net/def/rel/ogc/1.0/execute", "type": "application/json", "title": "Execute End Point", "href": "http://tb17.geolabs.fr:8119/ogc-api/processes/OTB.DisparityMapToElevationMap/execution"}, {"rel": "alternate", "type": "text/html", "title": "Execute End Point", "href": "http://tb17.geolabs.fr:8119/ogc-api/processes/OTB.DisparityMapToElevationMap/execution.html"}], "inputs": {"io.in": {"title": "The input disparity map (horizontal disparity in first band, vertical in second). This map can be computed by BlockMatching application.", "description": "The input disparity map (horizontal disparity in first band, vertical in second). This map can be computed by BlockMatching application.", "extended-schema": {"oneOf": [{"allOf": [{"$ref": "http://zoo-project.org/dl/link.json"}, {"type": "object", "properties": {"type": {"enum": ["image/tiff", "image/jpeg", "image/png"]}}}]}, {"type": "object", "required": ["value"], "properties": {"value": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/jpeg"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}}}]}, "schema": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/jpeg"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}, "id": "io.in"}, "io.left": {"title": "Left image in original (sensor) geometry. Only the geometric model of this image will be used, not the pixel values.", "description": "Left image in original (sensor) geometry. Only the geometric model of this image will be used, not the pixel values.", "extended-schema": {"oneOf": [{"allOf": [{"$ref": "http://zoo-project.org/dl/link.json"}, {"type": "object", "properties": {"type": {"enum": ["image/tiff", "image/jpeg", "image/png"]}}}]}, {"type": "object", "required": ["value"], "properties": {"value": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/jpeg"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}}}]}, "schema": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/jpeg"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}, "id": "io.left"}, "io.right": {"title": "Right image in original (sensor) geometry. Only the geometric model of this image will be used, not the pixel values.", "description": "Right image in original (sensor) geometry. Only the geometric model of this image will be used, not the pixel values.", "extended-schema": {"oneOf": [{"allOf": [{"$ref": "http://zoo-project.org/dl/link.json"}, {"type": "object", "properties": {"type": {"enum": ["image/tiff", "image/jpeg", "image/png"]}}}]}, {"type": "object", "required": ["value"], "properties": {"value": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/jpeg"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}}}]}, "schema": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/jpeg"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}, "id": "io.right"}, "io.lgrid": {"title": "Left epipolar grid (deformation grid between left sensor et disparity spaces)", "description": "Left epipolar grid (deformation grid between left sensor et disparity spaces)", "extended-schema": {"oneOf": [{"allOf": [{"$ref": "http://zoo-project.org/dl/link.json"}, {"type": "object", "properties": {"type": {"enum": ["image/tiff", "image/jpeg", "image/png"]}}}]}, {"type": "object", "required": ["value"], "properties": {"value": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/jpeg"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}}}]}, "schema": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/jpeg"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}, "id": "io.lgrid"}, "io.rgrid": {"title": "Right epipolar grid (deformation grid between right sensor et disparity spaces)", "description": "Right epipolar grid (deformation grid between right sensor et disparity spaces)", "extended-schema": {"oneOf": [{"allOf": [{"$ref": "http://zoo-project.org/dl/link.json"}, {"type": "object", "properties": {"type": {"enum": ["image/tiff", "image/jpeg", "image/png"]}}}]}, {"type": "object", "required": ["value"], "properties": {"value": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/jpeg"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}}}]}, "schema": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/jpeg"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}, "id": "io.rgrid"}, "io.out": {"title": "Output elevation map in ground projection. Elevation values are in meters. Floating point pixel type are expected.", "description": "Output elevation map in ground projection. Elevation values are in meters. Floating point pixel type are expected.", "schema": {"type": "string", "default": "float", "enum": ["uint8", "uint16", "int16", "int32", "int32", "float", "double"]}, "id": "io.out"}, "io.mask": {"title": "Masked disparity pixels won't be projected (mask values equal to zero)", "description": "Masked disparity pixels won't be projected (mask values equal to zero)", "extended-schema": {"oneOf": [{"allOf": [{"$ref": "http://zoo-project.org/dl/link.json"}, {"type": "object", "properties": {"type": {"enum": ["image/tiff", "image/jpeg", "image/png"]}}}]}, {"type": "object", "required": ["value"], "properties": {"value": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/jpeg"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}}}], "nullable": true}, "schema": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/jpeg"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}, "id": "io.mask"}, "step": {"title": "Spacing of the output elevation map (in meters)", "description": "Spacing of the output elevation map (in meters)", "schema": {"type": "number", "default": 5, "format": "double"}, "id": "step"}, "hmin": {"title": "Minimum elevation expected (in meters)", "description": "Minimum elevation expected (in meters)", "schema": {"type": "number", "default": 0, "format": "double"}, "id": "hmin"}, "hmax": {"title": "Maximum elevation expected (in meters)", "description": "Maximum elevation expected (in meters)", "schema": {"type": "number", "default": 100, "format": "double"}, "id": "hmax"}, "elev.dem": {"title": "This parameter allows selecting a directory containing Digital Elevation Model files. Note that this directory should contain only DEM files. Unexpected behaviour might occurs if other images are found in this directory.", "description": "This parameter allows selecting a directory containing Digital Elevation Model files. Note that this directory should contain only DEM files. Unexpected behaviour might occurs if other images are found in this directory.", "schema": {"type": "string", "nullable": true}, "id": "elev.dem"}, "elev.geoid": {"title": "Use a geoid grid to get the height above the ellipsoid in case there is no DEM available, no coverage for some points or pixels with no_data in the DEM tiles. A version of the geoid can be found on the OTB website(https://gitlab.orfeo-toolbox.org/orfeotoolbox/otb-data/blob/master/Input/DEM/egm96.grd).", "description": "Use a geoid grid to get the height above the ellipsoid in case there is no DEM available, no coverage for some points or pixels with no_data in the DEM tiles. A version of the geoid can be found on the OTB website(https://gitlab.orfeo-toolbox.org/orfeotoolbox/otb-data/blob/master/Input/DEM/egm96.grd).", "extended-schema": {"oneOf": [{"allOf": [{"$ref": "http://zoo-project.org/dl/link.json"}, {"type": "object", "properties": {"type": {"enum": ["application/octet-stream"]}}}]}, {"type": "object", "required": ["value"], "properties": {"value": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "application/octet-stream"}]}}}], "nullable": true}, "schema": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "application/octet-stream"}]}, "id": "elev.geoid"}, "elev.default": {"title": "This parameter allows setting the default height above ellipsoid when there is no DEM available, no coverage for some points or pixels with no_data in the DEM tiles, and no geoid file has been set. This is also used by some application as an average elevation value.", "description": "This parameter allows setting the default height above ellipsoid when there is no DEM available, no coverage for some points or pixels with no_data in the DEM tiles, and no geoid file has been set. This is also used by some application as an average elevation value.", "schema": {"type": "number", "default": 0, "format": "double"}, "id": "elev.default"}, "ram": {"title": "Available memory for processing (in MB)", "description": "Available memory for processing (in MB)", "schema": {"type": "integer", "default": 128, "nullable": true}, "id": "ram"}}, "outputs": {"io.out": {"title": "Output elevation map in ground projection. Elevation values are in meters. Floating point pixel type are expected.", "description": "Output elevation map in ground projection. Elevation values are in meters. Floating point pixel type are expected.", "extended-schema": {"oneOf": [{"allOf": [{"$ref": "http://zoo-project.org/dl/link.json"}, {"type": "object", "properties": {"type": {"enum": ["image/tiff", "image/jpeg", "image/png"]}}}]}, {"type": "object", "required": ["value"], "properties": {"value": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/jpeg"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}}}]}, "schema": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/jpeg"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}, "id": "io.out"}}}

http://tb17.geolabs.fr:8119/ogc-api/processes/OTB.DisparityMapToElevationMap.html
Last modified: Sat Feb 19 15:43:34 CET 2022