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After successful completion of the detailed land survey and creation of the Digital Terrain Model, visibility analysis is possible.
The advantage this solution offers is a colorful graphical representation of what can and what cannot be seen from certain viewpoints.
Features
• Visualisation
• 3D photomontage
• Environmental Impact Assessment (Line of sight and ZVIs)
• Design of ameliorative measures
Sample usages in Environmental Assessment.
Of particular value in Baseline studies of Environmental Assessment (EA).
We can addresses three areas of interest in EA, namely Visual Impact, Visual Influence and Visual Intrusion.
IMPACT: The ability to visualise the proposed scheme in 3D, with or without draped aerial orthophotos, textures and heighted features is an important precursor to many EA studies. It can also be of particular use when presenting a scheme for planning approval much later in the EA cycle. A realtime 3D fly-through can communicate much more information than a traditional contour plan.
INFLUENCE: Often referred to as the 'Visual Envelope' this indicates whether the development is visible from a single or multiple locations. A simple ’Line of Sight’ radiating out from the target defined as a single point, or a counter describing how many targets are visible from selected ’receptors’ (eye points) outside the development.
INTRUSION: The degree to which a development intrudes upon the field of view. It is often not sufficient to count the number of targets visible from a particular location, but to take into account the effect distance may have on the degree of intrusion into the field of view of the observer. An object close to the observer may have a greater intrusion than one that is hundreds of metres away.
IMPACT: What does the proposed development look like?
Use 3D view to determine the impact of a development. Utilise heighted point and link features and where an impression of height is required, such as a coppice of trees, use surface codes with a height applied.
Drape digital orthophotos onto the terrain surface for a more realistic view of the terrain. Raster map images may be used in the same way to assist in the orientation of the viewer.
INFLUENCE: Can a single object be seen or not?
Single point line of sight looking outwards from a single pivot point. Specify the height of the pivot point and target above the DTM. Define either a full 360deg sweep or arc between two bearings at a stipulated angular interval. We will then draw lines radiating out from the pivot until it reaches the maximum sight distance, the edge of the DTM or a void surface code. As the line goes from visible to invisible along each sight line, LSS will create link features as defined. A correction for earth curvature and refraction is optional. The resulting survey can be over displayed on top of the original survey and/or orthophoto/raster map for a clearer picture of which parts of the DTM are visible and which are invisible from the pivot.
INFLUENCE: How many targets can be seen from a grid of eye points?
Multiple point line of sight looking outwards from any number of points with a common feature code, optionally within a specified surface coded area or all such coded points anywhere in the survey.
This method allows us to define a grid of ’target’ points at a specified grid interval and height above the ground.
We have full control over the colour banding to define the number of points visible from each grid eye location.
What is produced is a survey containing text boxes whose colour is defined by the number of points visible from the grid point beneath the box and the number contained is the exact counter value. We may choose a transparent box to enable the display of the DTM behind the ZVI result.
Hello! You either have Javascript turned off, or you need to upgrade your flash player.
Flash Player Installation required to view the animated banner.
Click Here to get the latest flash player.
The advantage this solution offers is a colorful graphical representation of what can and what cannot be seen from certain viewpoints.
Features
• Visualisation
• 3D photomontage
• Environmental Impact Assessment (Line of sight and ZVIs)
• Design of ameliorative measures
Sample usages in Environmental Assessment.
Of particular value in Baseline studies of Environmental Assessment (EA).
We can addresses three areas of interest in EA, namely Visual Impact, Visual Influence and Visual Intrusion.
IMPACT: The ability to visualise the proposed scheme in 3D, with or without draped aerial orthophotos, textures and heighted features is an important precursor to many EA studies. It can also be of particular use when presenting a scheme for planning approval much later in the EA cycle. A realtime 3D fly-through can communicate much more information than a traditional contour plan.
INFLUENCE: Often referred to as the 'Visual Envelope' this indicates whether the development is visible from a single or multiple locations. A simple ’Line of Sight’ radiating out from the target defined as a single point, or a counter describing how many targets are visible from selected ’receptors’ (eye points) outside the development.
INTRUSION: The degree to which a development intrudes upon the field of view. It is often not sufficient to count the number of targets visible from a particular location, but to take into account the effect distance may have on the degree of intrusion into the field of view of the observer. An object close to the observer may have a greater intrusion than one that is hundreds of metres away.
IMPACT: What does the proposed development look like?
Use 3D view to determine the impact of a development. Utilise heighted point and link features and where an impression of height is required, such as a coppice of trees, use surface codes with a height applied.
Drape digital orthophotos onto the terrain surface for a more realistic view of the terrain. Raster map images may be used in the same way to assist in the orientation of the viewer.
INFLUENCE: Can a single object be seen or not?
Single point line of sight looking outwards from a single pivot point. Specify the height of the pivot point and target above the DTM. Define either a full 360deg sweep or arc between two bearings at a stipulated angular interval. We will then draw lines radiating out from the pivot until it reaches the maximum sight distance, the edge of the DTM or a void surface code. As the line goes from visible to invisible along each sight line, LSS will create link features as defined. A correction for earth curvature and refraction is optional. The resulting survey can be over displayed on top of the original survey and/or orthophoto/raster map for a clearer picture of which parts of the DTM are visible and which are invisible from the pivot.
INFLUENCE: How many targets can be seen from a grid of eye points?
Multiple point line of sight looking outwards from any number of points with a common feature code, optionally within a specified surface coded area or all such coded points anywhere in the survey.
This method allows us to define a grid of ’target’ points at a specified grid interval and height above the ground.
We have full control over the colour banding to define the number of points visible from each grid eye location.
What is produced is a survey containing text boxes whose colour is defined by the number of points visible from the grid point beneath the box and the number contained is the exact counter value. We may choose a transparent box to enable the display of the DTM behind the ZVI result.
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Oakes Surveys » Services » Visibility Analysis
Visibility Analysis
After successful completion of the detailed land survey and creation of the Digital Terrain Model, visibility analysis is possible.
The advantage this solution offers is a colorful graphical representation of what can and what cannot be seen from certain viewpoints.
Features
• Visualisation
• 3D photomontage
• Environmental Impact Assessment (Line of sight and ZVIs)
• Design of ameliorative measures
Sample usages in Environmental Assessment.
Of particular value in Baseline studies of Environmental Assessment (EA).
We can addresses three areas of interest in EA, namely Visual Impact, Visual Influence and Visual Intrusion.
IMPACT: The ability to visualise the proposed scheme in 3D, with or without draped aerial orthophotos, textures and heighted features is an important precursor to many EA studies. It can also be of particular use when presenting a scheme for planning approval much later in the EA cycle. A realtime 3D fly-through can communicate much more information than a traditional contour plan.
INFLUENCE: Often referred to as the 'Visual Envelope' this indicates whether the development is visible from a single or multiple locations. A simple ’Line of Sight’ radiating out from the target defined as a single point, or a counter describing how many targets are visible from selected ’receptors’ (eye points) outside the development.
INTRUSION: The degree to which a development intrudes upon the field of view. It is often not sufficient to count the number of targets visible from a particular location, but to take into account the effect distance may have on the degree of intrusion into the field of view of the observer. An object close to the observer may have a greater intrusion than one that is hundreds of metres away.
IMPACT: What does the proposed development look like?
Use 3D view to determine the impact of a development. Utilise heighted point and link features and where an impression of height is required, such as a coppice of trees, use surface codes with a height applied.
Drape digital orthophotos onto the terrain surface for a more realistic view of the terrain. Raster map images may be used in the same way to assist in the orientation of the viewer.
INFLUENCE: Can a single object be seen or not?
Single point line of sight looking outwards from a single pivot point. Specify the height of the pivot point and target above the DTM. Define either a full 360deg sweep or arc between two bearings at a stipulated angular interval. We will then draw lines radiating out from the pivot until it reaches the maximum sight distance, the edge of the DTM or a void surface code. As the line goes from visible to invisible along each sight line, LSS will create link features as defined. A correction for earth curvature and refraction is optional. The resulting survey can be over displayed on top of the original survey and/or orthophoto/raster map for a clearer picture of which parts of the DTM are visible and which are invisible from the pivot.
INFLUENCE: How many targets can be seen from a grid of eye points?
Multiple point line of sight looking outwards from any number of points with a common feature code, optionally within a specified surface coded area or all such coded points anywhere in the survey.
This method allows us to define a grid of ’target’ points at a specified grid interval and height above the ground.
We have full control over the colour banding to define the number of points visible from each grid eye location.
What is produced is a survey containing text boxes whose colour is defined by the number of points visible from the grid point beneath the box and the number contained is the exact counter value. We may choose a transparent box to enable the display of the DTM behind the ZVI result.
The advantage this solution offers is a colorful graphical representation of what can and what cannot be seen from certain viewpoints.
Features
• Visualisation
• 3D photomontage
• Environmental Impact Assessment (Line of sight and ZVIs)
• Design of ameliorative measures
Sample usages in Environmental Assessment.
Of particular value in Baseline studies of Environmental Assessment (EA).
We can addresses three areas of interest in EA, namely Visual Impact, Visual Influence and Visual Intrusion.
IMPACT: The ability to visualise the proposed scheme in 3D, with or without draped aerial orthophotos, textures and heighted features is an important precursor to many EA studies. It can also be of particular use when presenting a scheme for planning approval much later in the EA cycle. A realtime 3D fly-through can communicate much more information than a traditional contour plan.
INFLUENCE: Often referred to as the 'Visual Envelope' this indicates whether the development is visible from a single or multiple locations. A simple ’Line of Sight’ radiating out from the target defined as a single point, or a counter describing how many targets are visible from selected ’receptors’ (eye points) outside the development.
INTRUSION: The degree to which a development intrudes upon the field of view. It is often not sufficient to count the number of targets visible from a particular location, but to take into account the effect distance may have on the degree of intrusion into the field of view of the observer. An object close to the observer may have a greater intrusion than one that is hundreds of metres away.
IMPACT: What does the proposed development look like?
Use 3D view to determine the impact of a development. Utilise heighted point and link features and where an impression of height is required, such as a coppice of trees, use surface codes with a height applied.
Drape digital orthophotos onto the terrain surface for a more realistic view of the terrain. Raster map images may be used in the same way to assist in the orientation of the viewer.
INFLUENCE: Can a single object be seen or not?
Single point line of sight looking outwards from a single pivot point. Specify the height of the pivot point and target above the DTM. Define either a full 360deg sweep or arc between two bearings at a stipulated angular interval. We will then draw lines radiating out from the pivot until it reaches the maximum sight distance, the edge of the DTM or a void surface code. As the line goes from visible to invisible along each sight line, LSS will create link features as defined. A correction for earth curvature and refraction is optional. The resulting survey can be over displayed on top of the original survey and/or orthophoto/raster map for a clearer picture of which parts of the DTM are visible and which are invisible from the pivot.
INFLUENCE: How many targets can be seen from a grid of eye points?
Multiple point line of sight looking outwards from any number of points with a common feature code, optionally within a specified surface coded area or all such coded points anywhere in the survey.
This method allows us to define a grid of ’target’ points at a specified grid interval and height above the ground.
We have full control over the colour banding to define the number of points visible from each grid eye location.
What is produced is a survey containing text boxes whose colour is defined by the number of points visible from the grid point beneath the box and the number contained is the exact counter value. We may choose a transparent box to enable the display of the DTM behind the ZVI result.
Contact Us:
Call Oakes Surveys on:
01773 820124
Office hours: 8:30 - 17:00
Monday - Friday or email us at
Call Oakes Surveys on:
01773 820124
Office hours: 8:30 - 17:00
Monday - Friday or email us at
