below. Table (2)Satellite QuickBird-2 IKONOS-2 spot-5 Spot-4 Landsat-7Maximum resolution (m) 0.61 1 2.5 10 15For comparison tables (1) and (2), I personally think that for the current stable sources of satellite images ~ The following resolution options can be considered for the 000 basic surveying and mapping update test. Table (3)Ing scale satellite image (resolution)~ 000 Quickbird (0.61 m)IKONOS-2 (1 m
central wavelength and FWHM, while the pansharping fusion method needs to be enabled in ENVI Zoom, which is suitable for high-resolution images such as QuickBird and Ikonos.
The four operations are similar. The following describes the Gram-Schmidt operation process with relatively many parameters.
(1) Open the merged two files.
(2) choose Main Menu> transform> imagesharpening> Gram-Schmidt spectral sharpening or choose Main Menu> spectral-> Gram-spec
Aerial Images (frame and digital) and missing RPC parameters (missing) satellite image data can be determined by camera parameters, sensor parameters, out-of-range elements, and ground control points. The supported data includes scanned aerial photos, aerial digital photos projected from the frame center (such as vexcel ultracamd), and aerial digital photos projected from the line center (such as ads40), push Scan satellite (such as alos prism/avinir, Aster, CARTOSAT-1, FORMOSAT-2, GeoEye-1,
the architecture of the dynamic connection library (DLL. It supports target sharing technology and target-oriented design and development, and provides a means to add new functions to the system without recompiling and connecting the system, and allows you to crop these extended features in a specific project. The following DLL libraries are provided in erdas imagine:
* Image format DLL-provides direct access to multiple image format files without conversion, improving ease of use and saving di
complete project, including directional data and orthographic photographs, into a large number of geodetic planes and map projections. More than 2000 defined coordinate systems are supported. Users can also define their own coordinate systems.Supports aerial imagery: scanned images from analog cameras, templates for Dmc,dss,ultracam,rollei Aic,pictometry,dimac and digicam frames, ADS40 line array sensors. Input data format: 8-bit, 12-bit, or 16-bit TIFF, TIFF JPEG.Supported satellite imagery:
information as related to a traditional 4-band, 11-bit depth satellite suc H as IKONOS. Can see from this table that increasing the number of spectral bands have a much larger impact on the maximum number of Spectral combinations than does bit depth.
It is important to note that rarely, if ever, would satellite imagery utilize the entire range of pixel values possible With its bit depth. Imaging companies such as DigitalGlobe make the conscien
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