LIZARDTECH
1008 Western Ave.
Suite 200
Seattle, WA 98104
www.lizardtech.com/products/ geo
206-902-2839
Pricing
GeoExpress Unlimited Standalone* $7,900
Unlimited MrSID and JPEG 2000 encoding and powerful image manipulation tools
GeoExpress Encoding Bundles*
Level
1 - 100GB of annual encoding $2,900
Level 2 - 500GB of annual encoding $3,900
Level 3 - 1TB of annual encoding $4,900
Level 2 - 500GB of annual encoding $3,900
Level 3 - 1TB of annual encoding $4,900
GeoExpress Lite $1,500
Powerful
image manipulation tools for existing MrSID or JPEG 2000 imagery
No encode capabilities for a low cost, high power edit-only station
No encode capabilities for a low cost, high power edit-only station
*Includes 1 year support/maintenance
System Requirements
Minimum System Requirements
- 500 MHz Intel Pentium 3 CPU
- 128 MB RAM
- CD-ROM Drive
- Windows systems require .NET framework installed running GeoExpress
Introduction
GeoExpress 5.0 with MrSID from LIZARDTECH is a digital image manipulation program for viewing, extracting, and compressing large raster files. GeoExpress includes the Multi-resolution Seamless Image Database, MrSID, a wavelet-based image encoder. What is a wavelet-based image encoder? Basically, "wavelet-based coding provides substantial improvements in picture quality at higher compression ratios." Encoders such as JPEG "degrade at low bit-rates mainly because of the underlying block-based Discrete Cosine Transform (DCT)," according to this report published by the Association for Computing Machinery. The purpose of the software is to:
- Prepare imagery to be compressed and viewed by others (GeoExpress View is a program for sharing images)
- Create mosaics of a common projection
- Create images to be used to be imported by geographic information system or image processing software.
Background
LIZARDTECH released GeoExpress 5.0 on January 10th citing several new enhancements to the product including:
- Image reprojection that enables users to reproject imagery from one coordinate reference system to another.
- Area of interest encoding is also available which allows users to specify different compression ratios within one image or mosaic to highlight a particular area in rich detail or obscure, a particularly sensitive area while preserving the surrounding area in vivid detail.
- Pre-defined image profiles (NPJE, EPJE) that ensure compliance with Department of Defense image standards.
- User-defined JPEG 2000 image profiles can be created to ensure consistent results across a project.
- Multi-band support.
GeoExpress' interface allows the user to open several raster file formats including .TIF, GeoTIFF, band interleaved (.BIL), ERDAS, JPEG and JPEG 2000, Sun Raster, DOQs, and of course MrSID as well as a few others. Upon recognition of the file format, the image properties are displayed (See Figure 1). To encode non-MrSID images using the wavelet compression technology, a user would select the output encoding format (MrSID Generation 2 or 3, or JPEG 2000) as well as several other options for the encoding ratio. The image can also be encoded "losslessly." According to the report cited above, "In lossless compression schemes, the reconstructed image, after compression, is numerically identical to the original image. However lossless compression can only a achieve a modest amount of compression. An image reconstructed following lossy compression contains degradation relative to the original. Often this is because the compression scheme completely discards redundant information."

Prior to encoding, GeoExpress 5.0 contains a
Preview window to view the image, which can be cropped to user
specifications (See Figure 2).
This allows the user to only select a those areas of greatest interest
to be shared with others. Alternatively, several images of varying
projections can be loaded so that a mosaic can be created and output to
a compressed format. Figure 3
is an example mosaic from the Seattle Washington area.

A
very useful feature of GeoExpress 5.0 is the ability to degrade certain
areas of the output image in order to conserve space (See Figure 4).
Where a specific region of the image is of importance only, that area
can be preserved in its full resolution. LIZARDTECH believes this
features is of great interest to certain military and intelligence
applications where "classified" areas can be obscured from view.


For users looking to decide which version of GeoExpress to acquire, a table of product functionality is provided below:

