David Maune - Academia.edu (original) (raw)

Papers by David Maune

Photogrammetric Engineering and Remote Sensing, Mar 1, 2023

Photogrammetric Engineering and Remote Sensing, Mar 1, 2015

The new ASPRS accuracy standards fi ll a critical need, vital for map users and makers alike. For... more The new ASPRS accuracy standards fi ll a critical need, vital for map users and makers alike. For centuries, mapscale and contour interval have been used as an indicationof map accuracy. Users want to know how accurately theycan measure different things on a map, and map makerswant to know how accurate maps need to be in order tosatisfyuser requirements. Those contracting for newmaps depend on some form of map accuracy standard to evaluate the trade off between the accuracy required vs.how much time and expense are justifi ed in achieving it,and then to describe the accuracy of the result in a uniform way that isreliable, defensible, and repeatable. No prior U.S. accuracy standard comprehensively addresses the current state of mapping technology, which is why the new ASPRS standards were developed. The National Map Accuracy Standards (NMAS), developed in 1947, are still used because they are simple, but there is no scientifi c correlation with those standards and current mapping methodologies. The ASPRS 1990 Standards were an improvement over NMAS; however, they do not well represent the capabilities of lidar, orthoimagery, digital mapping cameras or other current technologies in wide-spread use today. The National Standard for Spatial Data Accuracy (NSSDA) is a reporting standard that references the old ASPRS 1990 standards and is crossreferenced in the new ASPRS standards, but it provides no accuracy thresholds and does not by itself provide any new or updated guidance on how to select or specify an appropriate accuracy for intended applications. The new ASPRS Positional Accuracy Standards for Digital Geospatial Data address recent innovations in digital imaging and non-imaging sensors, airborne GPS, inertial measurement unit (IMU) and aerial triangulation (AT) technologies. Unlike prior standards, the new standards are independent of scale and contour interval, they address the higher level of accuracies achievable by the latest technologies (e.g. unmanned aerial systems and lidar mobile mapping systems), and they provide enough fl exibility to be applicable to future technologies as they are developed. Finally, the new standards provide cross references to older standards, as well as detailed guidance for a wide range of potential applications.

Photogrammetric Engineering & Remote Sensing

This report pertains to a Specific Purpose LiDAR Survey of Brevard County, Florida.

For more information on the USGS-the Federal source for science about the Earth, its natural and ... more For more information on the USGS-the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment-visit http://www.usgs.gov or call 1-888-ASK-USGS (1-888-275-8747) For an overview of USGS information products, including maps, imagery, and publications, visit http://www.usgs.gov/pubprod To order this and other USGS information products, visit

Photogrammetric Engineering and Remote Sensing, 2015

The new ASPRS accuracy standards fi ll a critical need, vital for map users and makers alike. For... more The new ASPRS accuracy standards fi ll a critical need, vital for map users and makers alike. For centuries, mapscale and contour interval have been used as an indicationof map accuracy. Users want to know how accurately theycan measure different things on a map, and map makerswant to know how accurate maps need to be in order tosatisfyuser requirements. Those contracting for newmaps depend on some form of map accuracy standard to evaluate the trade off between the accuracy required vs.how much time and expense are justifi ed in achieving it,and then to describe the accuracy of the result in a uniform way that isreliable, defensible, and repeatable. No prior U.S. accuracy standard comprehensively addresses the current state of mapping technology, which is why the new ASPRS standards were developed. The National Map Accuracy Standards (NMAS), developed in 1947, are still used because they are simple, but there is no scientifi c correlation with those standards and current mapping met...

Photogrammetric Engineering & Remote Sensing, 2021

This month's column is a bit of a twist on the "standard" GIS Tips & Tricks and focuses on a high... more This month's column is a bit of a twist on the "standard" GIS Tips & Tricks and focuses on a highly technical area of photogrammetry, namely Aerial Triangulation and gives us a brief history of the technology. Dr. David Maune contributed this column and he opens up the "black box" for a little trickery that enables low-cost, high-precision imagery. Enjoy. Today, Aerial Triangulation (AT) is performed with "black box" technology that most users don't understand. My "trick" in teaching AT is to review all generations of photogrammetry that led to today's digital photogrammetry and Structure from Motion (SfM). Fundamentals of Photogrammetry-To reconstruct the 3-D geometry that existed when each aerial photo is taken, AT determines the 3-D ground-coordinate positions (X/Y/Z) of the camera focal point and angular orientation (ω/φ/κ) of the camera when each photo is taken, where: X is the x-coordinate (Easting), Y is the y-coordinate (Northing) and Z is the elevation of each photo's focal point, e.g., o1 and o 2 in Figure 1; omega (ω) is the roll around the x-axis, the direction of flight in the photo coordinate system; phi (φ) is the pitch around the y-axis, horizontally perpendicular to the x-axis; and kappa (κ) is the yaw around the z-axis, vertical and perpendicular to the x-axis and y-axis. Upper case letters (X/Y/Z) represent ground coordinates, typically in State Plane or UTM meters; lower case letters (x/y) represent photo coordinates, typically mm in a photo coordinate system.

Photogrammetric Engineering and Remote Sensing, 1976

There is a demand from throughout the scientific community for extremely accurate three-dimension... more There is a demand from throughout the scientific community for extremely accurate three-dimensional (3D) angle and distance measurements from SEM micrographs. Photogrammetric self-calibration can be used to mathematically model systematic SEM distortions, which amount to many hundreds of micrometers at photo scale, so that a 10- to 100-times improvement over conventional methods can be realized in the accuracy of SEM 3D measurements. Photogrammetric self-calibration also provides the microscopist with his first means for determining the true accuracy of his 3D measurements. The highly significant spiral distortion, resulting from nonlinear electron scanning, is believed to apply as well to airborne sensors which rely upon scanning techniques.

Photogrammetric Engineering and Remote Sensing, Mar 1, 2023

Photogrammetric Engineering and Remote Sensing, Mar 1, 2015

The new ASPRS accuracy standards fi ll a critical need, vital for map users and makers alike. For... more The new ASPRS accuracy standards fi ll a critical need, vital for map users and makers alike. For centuries, mapscale and contour interval have been used as an indicationof map accuracy. Users want to know how accurately theycan measure different things on a map, and map makerswant to know how accurate maps need to be in order tosatisfyuser requirements. Those contracting for newmaps depend on some form of map accuracy standard to evaluate the trade off between the accuracy required vs.how much time and expense are justifi ed in achieving it,and then to describe the accuracy of the result in a uniform way that isreliable, defensible, and repeatable. No prior U.S. accuracy standard comprehensively addresses the current state of mapping technology, which is why the new ASPRS standards were developed. The National Map Accuracy Standards (NMAS), developed in 1947, are still used because they are simple, but there is no scientifi c correlation with those standards and current mapping methodologies. The ASPRS 1990 Standards were an improvement over NMAS; however, they do not well represent the capabilities of lidar, orthoimagery, digital mapping cameras or other current technologies in wide-spread use today. The National Standard for Spatial Data Accuracy (NSSDA) is a reporting standard that references the old ASPRS 1990 standards and is crossreferenced in the new ASPRS standards, but it provides no accuracy thresholds and does not by itself provide any new or updated guidance on how to select or specify an appropriate accuracy for intended applications. The new ASPRS Positional Accuracy Standards for Digital Geospatial Data address recent innovations in digital imaging and non-imaging sensors, airborne GPS, inertial measurement unit (IMU) and aerial triangulation (AT) technologies. Unlike prior standards, the new standards are independent of scale and contour interval, they address the higher level of accuracies achievable by the latest technologies (e.g. unmanned aerial systems and lidar mobile mapping systems), and they provide enough fl exibility to be applicable to future technologies as they are developed. Finally, the new standards provide cross references to older standards, as well as detailed guidance for a wide range of potential applications.

Photogrammetric Engineering & Remote Sensing

This report pertains to a Specific Purpose LiDAR Survey of Brevard County, Florida.

For more information on the USGS-the Federal source for science about the Earth, its natural and ... more For more information on the USGS-the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment-visit http://www.usgs.gov or call 1-888-ASK-USGS (1-888-275-8747) For an overview of USGS information products, including maps, imagery, and publications, visit http://www.usgs.gov/pubprod To order this and other USGS information products, visit

Photogrammetric Engineering and Remote Sensing, 2015

The new ASPRS accuracy standards fi ll a critical need, vital for map users and makers alike. For... more The new ASPRS accuracy standards fi ll a critical need, vital for map users and makers alike. For centuries, mapscale and contour interval have been used as an indicationof map accuracy. Users want to know how accurately theycan measure different things on a map, and map makerswant to know how accurate maps need to be in order tosatisfyuser requirements. Those contracting for newmaps depend on some form of map accuracy standard to evaluate the trade off between the accuracy required vs.how much time and expense are justifi ed in achieving it,and then to describe the accuracy of the result in a uniform way that isreliable, defensible, and repeatable. No prior U.S. accuracy standard comprehensively addresses the current state of mapping technology, which is why the new ASPRS standards were developed. The National Map Accuracy Standards (NMAS), developed in 1947, are still used because they are simple, but there is no scientifi c correlation with those standards and current mapping met...

Photogrammetric Engineering & Remote Sensing, 2021

This month's column is a bit of a twist on the "standard" GIS Tips & Tricks and focuses on a high... more This month's column is a bit of a twist on the "standard" GIS Tips & Tricks and focuses on a highly technical area of photogrammetry, namely Aerial Triangulation and gives us a brief history of the technology. Dr. David Maune contributed this column and he opens up the "black box" for a little trickery that enables low-cost, high-precision imagery. Enjoy. Today, Aerial Triangulation (AT) is performed with "black box" technology that most users don't understand. My "trick" in teaching AT is to review all generations of photogrammetry that led to today's digital photogrammetry and Structure from Motion (SfM). Fundamentals of Photogrammetry-To reconstruct the 3-D geometry that existed when each aerial photo is taken, AT determines the 3-D ground-coordinate positions (X/Y/Z) of the camera focal point and angular orientation (ω/φ/κ) of the camera when each photo is taken, where: X is the x-coordinate (Easting), Y is the y-coordinate (Northing) and Z is the elevation of each photo's focal point, e.g., o1 and o 2 in Figure 1; omega (ω) is the roll around the x-axis, the direction of flight in the photo coordinate system; phi (φ) is the pitch around the y-axis, horizontally perpendicular to the x-axis; and kappa (κ) is the yaw around the z-axis, vertical and perpendicular to the x-axis and y-axis. Upper case letters (X/Y/Z) represent ground coordinates, typically in State Plane or UTM meters; lower case letters (x/y) represent photo coordinates, typically mm in a photo coordinate system.

Photogrammetric Engineering and Remote Sensing, 1976

There is a demand from throughout the scientific community for extremely accurate three-dimension... more There is a demand from throughout the scientific community for extremely accurate three-dimensional (3D) angle and distance measurements from SEM micrographs. Photogrammetric self-calibration can be used to mathematically model systematic SEM distortions, which amount to many hundreds of micrometers at photo scale, so that a 10- to 100-times improvement over conventional methods can be realized in the accuracy of SEM 3D measurements. Photogrammetric self-calibration also provides the microscopist with his first means for determining the true accuracy of his 3D measurements. The highly significant spiral distortion, resulting from nonlinear electron scanning, is believed to apply as well to airborne sensors which rely upon scanning techniques.