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Author Archives: adam
Flight Planning and GSD Calculator (Beta)
Posted in Setup Operation, Setup Operations, Setup Operations, Setup Operations
Tagged Canon 5D Mark II, Photogrammetry, Photoscan, Photoscan Pro
Nikon D200 IR Calibration Values
Below are camera calibration values for the CAST Nikon D200 IR camera with Nikkor 28 mm lens. For projects requiring highest accuracy it is recommended that you perform your own calibration, otherwise these values can be used. PhotoModeler v2012 Calibration … Continue reading
Posted in Uncategorized
Tagged Camera Calibration, Nikon, Nikon D200 IR
Pseudo-NDVI from Nikon D200 IR Images
Because of the light transmission properties of the filter installed in the CAST Nikon D200 IR DSLR camera, it is possible to isolate infrared and red light into separate channels. These channels can then be used to generate an NDVI … Continue reading
Posted in Setup Operations
Tagged NDVI, Nikon D200, Nikon D200 IR
Specific Settings for Nikon D200 and Close-Range Photogrammetry
Along with the generic advise given in the Acquire Images for Close-Range Photogrammetry and Custom White Balance for Nikon D200 IR posts, here are some important settings to consider when using the standard or IR modified Nikon D200 cameras: – Rotate … Continue reading
Posted in Setup Operations, Setup Operations
Tagged close range scanning, Nikon, Nikon D200, Photogrammetry
Custom White Balance for Nikon D200 IR
Because some red light is transmitted by the IR filter, any of the standard white balance settings will produce reddish images. A custom white balance using the “White Balance Preset” option can be used for better images. It’s important to … Continue reading
Posted in Nikon D200 IR, Setup Operations
Pathfinder Office "How To" Guide
This page demonstrates how to create a data dictionary in Pathfinder Office, transfer it to a GPS receiver, transfer data from the receiver to Pathfinder Office, differentially correct the data, and export it for use in ArcGIS. Hint: You can … Continue reading
Basic Operation of the Epson 10000XL Flatbed Scanner with SilverFast Software Plugin for Photoshop
This document will guide you through using the Epson 10000XL Flatbed Scanner and SilverFast plugin to scan film for many applications including use in photogrammetry and archival storage. Hint: You can click on any image to see a larger version. … Continue reading
Posted in Setup Operations, Workflow, Workflow
Basic Operation of the Epson 10000XL Flatbed Scanner with EPSON Scan Utility Software
This document will guide you through using the Epson 10000XL Flatbed Scanner to scan photographs and other media for many applications including use in photogrammetry and archival storage. Hint: You can click on any image to see a larger version. … Continue reading
Posted in Setup Operations, Workflow, Workflow
Tagged aerial photos, Epson, flatbed scanner, LPS, Photogrammetry, Photoscan, Photoscan Pro
Pre-processing Digital Images for Close-Range Photogrammetry (CRP)
This page will show you how pre-process digital images for use in Close-Range Photogrammetry (CRP). Hint: You can click on any image to see a larger version. [wptabs style=”wpui-alma” mode=”vertical”] [wptabtitle] A BASIC INTRODUCTION [/wptabtitle] [wptabcontent] Why is pre-processing necessary? … Continue reading
Posted in Workflow, Workflow, Workflow, Workflow, Workflow
Tagged Adobe, Camera Raw, format dng, format jpeg, format jpg, format tif, format tiff, Photogrammetry, Photography Basics, PhotoModeler, PhotoModeler Scanner, Photoscan, Photoscan Pro, PhotoShop
Good Photos vs. Bad Photos for Close-range Photogrammetry
When it comes to close-range photogrammetry, the difference between “good” photos and “bad” photos can be the difference between getting useful 3D information and having complete failure. There are many different variables contributing to success or failure of a project, … Continue reading
Posted in Checklist, Checklist, Checklist, Checklist, Setup Operation, Setup Operations, Setup Operations, Setup Operations
Tagged Canon 5D Mark II, Nikon D200, Nikon D70, Photogrammetry
Checklist for Close-Range Photogrammetry Image Collection
Download a printable checklist in PDF format here. [wptabs effect=”slide” mode=”vertical”] [wptabtitle] Before you leave the office[/wptabtitle] [wptabcontent] – Check that the battery is charged (check spare battery if taking one) – Copy images from past projects to a laptop if needed … Continue reading
Posted in Checklist, Checklist, Checklist, Checklist, Checklist
Tagged Canon 5D Mark II, checklist, Nikon D200, Nikon D70, Photogrammetry
Computer Requirements for PhotoScan and PhotoScan Pro
Computer requirements for software can change quickly. We recommend you visit the PhotoScan Wiki and especially the Tips and Tricks page for more, up-to-date information on this topic. Basic Requirements Because of the wide range of potential images used, the … Continue reading
Posted in Checklist, Workflow
Tagged Breuckmann, Computer Requirements, Photogrammetry, Photoscan, Photoscan Pro
List of Helpful Websites and Publications for Close-Range Photogrammetry
General Photography and Close-Range Photogrammetry Standards and Guides [wptabs type=”tabs” effect=”none” mode=”vertical”] [wptabtitle] Learn more about depth of field, bit depth, EXIF metadata, file formats, and more…[/wptabtitle] [wptabcontent] Glossary of terms found at Digital Photography Review website (dpreview.com) http://www.dpreview.com/learn/?/Glossary/[/wptabcontent] [wptabtitle] … Continue reading
File Exports and Deliverables Documentation for Digital Photogrammetry
Close Range Photogrammetry: Typical deliverables created as the end result of a CRP project could include 2D vector graphics (planimetric or elevation type CAD drawings), dense point clouds, 3D polylines, facetized models (mesh) of an object or surface, and raster … Continue reading
Posted in Convergent Photogrammetry, Metadata, Metadata, Metadata, Metadata, Workflow
Tagged Data Processing, File Export, LPS, Metadata Form, Photogrammetry, PhotoModeler, PhotoModeler Scanner, Photoscan, Photoscan Pro
Image Processing and Block Triangulation Documentation for Close-Range Photogrammetry
In order to extract three dimensional points from two dimensional images, it is necessary to perform a triangulation with at least two images (a stereo pair). When more than two images are used in a triangulation, we refer to the … Continue reading
Camera Calibration Documentation for Close-Range Photogrammetry
Each camera (referring to a camera and lens combination) used in a close-range photogrammetry project should be calibrated and a calibration file should be saved with the project data. Some close-range photogrammetry software does not require this information before processing … Continue reading
Image Acquisition Documentation for Close-Range Photogrammetry
Organization and documentation during image collection in the field is especially important. The table below describes the appropriate documentation for this process. Download a printable form in PDF format here or in a spreadsheet (.xlsx) format here. For each group of images: Entry Description Project … Continue reading
Control Point Documentation for Close-Range Photogrammetry and/or GPS
If external control is collected for the project, the table below describes the appropriate documentation for this process. Download a printable form in PDF format here or in a spreadsheet (.xlsx) format here. For each control point: Entry Description Point ID ID or name … Continue reading
Posted in Convergent Photogrammetry, Metadata, Metadata, Metadata, Metadata, Metadata Forms, Metadata Forms, Metadata Forms, Metadata Forms, Metadata Forms, Metadata Forms, Metadata Forms, Metadata Forms, Metadata Forms, Metadata Forms, Metadata Forms, Workflow
Tagged Control Point, Leica GPS, Metadata Form, Photogrammetry, Trimble GPS
Project Level Documentation for Close-Range Photogrammetry
A number of guides and documentation standards for the collection and processing of close-range photogrammetric data (or in some cases for photographic documentation in general) have been published by various organizations. This form and other metadata forms on this site follow the Archaeology Data Service (ADS) Guides to Good Practice. See the list of helpful webpages and publications for a link to the ADS guides and other helpful links.
Every CRP project should contain project level documentation, including a description of the project and site, date(s) of the survey, name(s) and organization(s) of the surveyor(s), and other useful notes. The table below describes the appropriate documentation for this process and you can download a printable form in PDF format here or in a spreadsheet (.xlsx) format here.
| Element | Description |
| Title | The project name or name for the dataset. |
| Description | The original purpose for the survey work. |
| Subject | Keywords for the subject content of the dataset (qualified using e.g. the English Heritage NMR Monument Type Thesaurus or the MDA Object Type Thesaurus). |
| Coverage | Site location and description. The address, or coordinates for the site and a description of the site and object or structure to be surveyed. Coverage should also include any relevant period terms. |
| Creators | Full name and organization(s) of the surveyor(s) |
| Identifiers | Project or reference numbers (e.g. HABS/HAER/HALS survey number) used to identify the dataset. |
| Dates | Date or dates that the survey was conducted in both the field and/or lab. |
| Intended accuracy or scale of the survey | The originally intended accuracy or scale that the survey was to achieve. |
| Make & model of camera(s) and lens(es) | Detailed make and model of the camera and lens used for the survey. List the associated calibration files if applicable. |
| Description of reference information used | Describe any existing reference information available to the surveyor(s), including paper plans or digital spatial data of the site or object. |
| Additional project notes | Any additional project notes that the surveyor feels applicable. |
Tiwanaku, Bolivia – Digital Elevation Model (1992)
The Center has been involved in a multi-year project in collaboration with Dr. Alexei Vranich at the University of Pennsylvania to scan and document the Pre-Incan site of Tiwanaku, Bolivia. Read a short synopsis of the project at Tiwanaku Project … Continue reading
On-the-fly and Permanent Orthorectification of NITF Images in ArcGIS
About NITF files The NITF (National Imagery Transmission Format Standard) format is commonly used for georeferenced imagery and has the ability to store a large amount of ancillary data and metadata along with the image itself, all in one file. … Continue reading
Posted in Workflow
Tagged ArcGIS, CORONA, format nitf, Workflow
Equipment and Strategy Checklist for Trimble 5700/5800
Use this Checklist before Acquiring External Control with Trimble Survey Grade GPS Equipment Checklist: Trimble gear (this list depends on the situation, so you may not need all of this) Base station (can set up one or two base stations) … Continue reading
Posted in Checklist, Checklist, Hardware, Trimble 5700, Trimble 5800
Tagged GPS model 5700, GPS model 5800, Trimble GPS
Four Basic Steps of a Close-Range Photogrammetry Project
This workflow provides an overview of the steps involved in a close range photogrammetry project. Not all close-range photogrammetry projects are the same, but virtually all will include some form of the steps outlines below. [wptabs mode=”vertical”] [wptabtitle] Project Planning[/wptabtitle] [wptabcontent] … Continue reading
Posted in Photogrammetry
Tagged 5D mark II, Archaeology/Historic Recordation, Architectural Recordation, camera res 12 megapixels, camera res 21 megapixels, camera resolution 7 megapixels, Canon, D200, D70, Data Collection, Data Processing, Eos Systems, format 3ds, format dng, format dwg, format dxf, format jpeg, format jpg, format raw, format tif, format tiff, GPS, Modeling, Nikon, Photogrammetry, PhotoModeler, PhotoModeler Scanner, Workflow
Acquire Images for Close-Range Photogrammetry
The following post describes in detail the basic steps for acquiring close-range digital images for a generic photogrammetric project. [wptabs mode=”vertical”] [wptabtitle] In Office Setup: Begin the Metadata Process[/wptabtitle] [wptabcontent] Choose a method for documenting the project (e.g. paper, laptop) … Continue reading