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    Basic Imagery
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    Standard Imagery
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    Stereo Imagery
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    Advance Ortho Series
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    Advanced Elevation Series
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    Worldview Elevation Suite
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    Aerial Imagery
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    Tasking Services
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    Image Processing

 

Stereo Imagery

For users with advanced image processing capabilities and photogrammetric tools

  

Stereo Imagery products come in two varieties: Basic Stereo and Ortho Ready Stereo.

Stereo Imagery products are designed for users with advanced image processing capabilities and photogrammetric tools. This product is ideal for Digital Elevation Model (DEM) generation, 3D visualization, and feature extraction applications. Stereo images are collected in-track, meaning on the same orbit, and are acquired at angles optimal for stereo viewing and manipulation.

Features

FeaturesBenefits
  • High three-dimensional accuracy Stereo accuracy:
    • 5.0 m CE90 at <30° off nadir
    • 5.0 m LE90 at <30° off nadir
  • More accurate mapping and terrain modeling results
  •  High resolution
    • 50 cm panchromatic and pan-sharpened
    • 2 m pan-sharpened and multispectral
  •  Provides high density terrain posting to produce highly detailed surface data
  • Large image swath collection size
    • 16.4 km – 17.6 km width at nadir
  • Flexible product composition
    • Basic Stereo Imagery unit size is at least 16.4 km wide by 14 km long
    • Ortho Ready Stereo Imagery area-framed based on AOI
    • 100 km2 minimum (Ortho Ready)
    • Tiling available (Ortho Ready)
  • High radiometric response
    • 11-bit digitization (up to 2,048 levels of gray scale)
  • Ease-of use in commercial photogrammetry tools resulting in faster processing
  • Superior image classification and analysis
    • 11-bit digitization (up to 2,048 levels of gray scale)
    • Discrete non-overlapping spectral bands
 
  • Open systems
    • Integrated camera model in most leading commercial photogrammetry software packages
    • Popular image file formats
 
New York City, New York, U.S.A.
Collected April 18, 2008

Specifications

Order ParametersBasic StereoOrtho Ready Stereo
Product Type Panchromatic, Multispectral 4-band, or Bundle (pan + 4-band multispectral) Panchromatic, Multispectral 4-band, 8-band, 4-band/8-band Bundle (Pan + MS), Natural Color, Color Infrared, 4-band Pan-sharpened
Image Bits / Pixel 8 or 16 bits
File Formats GeoTIFF 1.0, NITF 2.1, NITF 2.0
Resampling Options

4x4 cubic convolution
Nearest neighbor
MTF kernel
Enhanced Kernel*
Pan-sharpened Kernel**

Minimum AOI Size 210 km2 100 km2
Product Framing Full-width framed (products delivered in units that are the swath width of sensor, 14 km long) or AOI divided into equal parts (some limitations due to file size) Area-framed
Tiling None Pixel Based: 8k, 14k, 16k Map Based
Image Accuracy Specification (Basic and Ortho Ready Stereo)A
Horizontal 5.0 m CE90 at <30º off nadir  Typical performance in the range of 3.0 - 4.0 m CE90 at nadir
Vertical 5.0 m LE90 at <30º off nadir Typical performance in the range of 3.0 - 4.0 m LE90 at nadir
ProcessingBasic Stereo    Ortho Ready Stereo
Radiometric Corrections Relative radiometric response between detectors, non-responsive detector fill, conversion to absolute radiometry
Sensor Corrections Internal detector geometry, optical distortion, scan distortion, any line-rate variations
Geometric Corrections None Projected to a plane using a map projection and datum, projected to a constant base elevation (calculated on the average terrain elevation based on order area of interest)
 

* Only available with panchromatic only or pan-sharpened products
**Only available with pan-sharpened products

A - Accuracy specifications exclude terrain induced displacement and is applied to products with an off nadir of less than 30 degrees

Delivery

Stereo Imagery can be acquired from the DigitalGlobe archive or tasking. Ortho Ready Stereo is delivered based on the AOI and delivered with all of the Image Support Data files needed for photogrammetric processing, including a stereo file that identifies the images in the pair and collection angles, attitude and ephemeris data, geometric calibration, camera model, image metadata, radiometric data, and rational functions.