GIS Data Catalog
2003 LiDAR Digital Surface Model (DSM) Intensity
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Summary
In its TIFF format the intensity information provides a panchromatic image of the return surface at the 1-meter GSD (ground sample distance)/pixel resolution.
Intensity values vary depending from which type of surface the LiDAR reflection is obtained and this translates into a series of tonal differences.
In its balanced image format the data serves mainly as a backdrop providing some reference to current ground surface vegetative state at the time of LiDAR acquisition, though does not provide the same level of detail or definition that a true panchromatic orthophoto would at the same resolution.The ASCII intensity value data may provide a more detailed, unsmoothed/unbalanced description of the reflected The intensity values have easting and northing geographic coordinates for surface location.
correlation.
Description
LiDAR return intensity value data obtained from both the first LiDAR return and from the last LiDAR return, provided in separate files.Data is available as histogram-balanced TIFF 8-bit single-band image.
Image data is orthorectified being tied to the LiDAR elevation return values and provided in the King County township-range (idxptrmbr) tile scheme as TxxRxx_fri003, and TxxRxx_lri003 for first-return intensity (fri) and last-return intensity (lri) imagery, respectively.
The 003 represents the approximate resolution of the imagery, in feet, rounded from the actual GSD of 1 meter.
The image data is also available as JP2000 compressed jp2 files.
The intensity data is also available in ASCII format as variably-spaced points with easting,northing, and intensity-value.
ASCII format data is will be available only for the King County project area of the County, as intensity data was not delivered under for the PSLC project area.
Layer information
| Layer Name | IMAGE_LiDARFirstReturnIntensityImagery |
| Subject Category | Imagery |
| Title | 2003 LiDAR Digital Surface Model (DSM) Intensity |
| Feature Count | 0 |
| Feature Type | Raster |
| Next Update | None planned |
| Spatial reference | None |
| Control ID | None |
| Place Keywords | None |
| Theme Keywords | Lidar Data, Lidar Return Intensity Data, First-Return Lidar, Last-Return Lidar, ASCII Format, Imagery, Orthoimagery, Imagerybasemapsearthcover |
| Supplemental Information | None |
Attribute information
|
OBJECTID
From ESRI |
Description
Internal feature number. DomainSequential unique whole numbers that are automatically generated. |
|
Shape
From ESRI |
Description
Feature geometry. DomainCoordinates defining the features. |
|
Shape_Length
From Esri |
Description
Length of feature in internal units. DomainPositive real numbers that are automatically generated. |
|
Shape_Area
From Esri |
Description
Area of feature in internal units squared. DomainPositive real numbers that are automatically generated. |
|
MosaicID
No Source Noted |
Description
Not Found DomainNot Found |
Contact information
| Maintained by | KCGIS Center |
| Primary |
KCGIS Center
giscenter@kingcounty.gov |
Terms of Use
| License | Terms of use and copyright |
Summary
In its TIFF format the intensity information provides a panchromatic image of the return surface at the 1-meter GSD (ground sample distance)/pixel resolution.
Intensity values vary depending from which type of surface the LiDAR reflection is obtained and this translates into a series of tonal differences.
In its balanced image format the data serves mainly as a backdrop providing some reference to current ground surface vegetative state at the time of LiDAR acquisition, though does not provide the same level of detail or definition that a true panchromatic orthophoto would at the same resolution.The ASCII intensity value data may provide a more detailed, unsmoothed/unbalanced description of the reflected The intensity values have easting and northing geographic coordinates for surface location.
correlation.
Description
LiDAR return intensity value data obtained from both the first LiDAR return and from the last LiDAR return, provided in separate files.Data is available as histogram-balanced TIFF 8-bit single-band image.
Image data is orthorectified being tied to the LiDAR elevation return values and provided in the King County township-range (idxptrmbr) tile scheme as TxxRxx_fri003, and TxxRxx_lri003 for first-return intensity (fri) and last-return intensity (lri) imagery, respectively.
The 003 represents the approximate resolution of the imagery, in feet, rounded from the actual GSD of 1 meter.
The image data is also available as JP2000 compressed jp2 files.
The intensity data is also available in ASCII format as variably-spaced points with easting,northing, and intensity-value.
ASCII format data is will be available only for the King County project area of the County, as intensity data was not delivered under for the PSLC project area.
Contact information
| Maintained by | KCGIS Center |
| Primary |
KCGIS Center
giscenter@kingcounty.gov |
Terms of use and copyright
| License | Terms of use and copyright |