New Satellite Imagery Acquisitions

If you can not find a satellite image that meets your requirements in our existing archive ResMap can acquire new satellite images at resolutions ranging from 30 metres to 0.61 metres over your area of interest.

Our Remote Sensing (RS) Department specializes in correction, analysis and processing of satellite imagery and derived products. Our RS team has extensive experience with a wide variety of satellite data. This experience allows us to match the differing characteristics of satellites to the needs of our clients. Here is a brief description of satellite data processed by the RS Department. Click on the imagery of interest for further details and examples.

SATELLITE

SENSOR

BANDS

SCENE

BIT DEPTH

ASTER

30m Short Wave InfraRed
15m Visible & Near InfraRed
90m Thermal InfraRed

6 SWIR
3 VNIR
5 TIR

60 by 60km

8 Bit & 12 Bit (TIR)

Landsat 7 ETM+

30m multispectral
15m panchromatic
60m thermal

6 multispectral
1 panchromatic
1 thermal

185 by 185km

8 Bit

IRS C/D

5.8m panchromatic
20m multispectral

1 panchromatic

70 by 70km

6 Bit

SPOT 4

10m panchromatic
20m multispectral

1 panchromatic
3 multispectral

60 by 60km

8 Bit

SPOT 5

2.5m panchromatic
5m panchromatic
10m multispectral

1 panchromatic
3 multispectral

60 by 60km

8 Bit

EROS 1A

1.8m panchromatic

1 panchromatic

12.5 by 12.5km

11 Bit

IKONOS

1m panchromatic
4m multispectral

1 panchromatic
4 multispectral

N/A

11 Bit

QuickBird

0.61m panchromatic
2.44m multispectral

1 panchromatic
4 multispectral

N/A

11 Bit

Landsat / Orthophoto Fused

Variable

Variable

N/A

8 Bit

A Price List of Raw Imagery is available in PDF here.

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Multiple Protocol Service

Open GIS Consortium Web Map Service (OGC WMS)

The Open GIS Consortium (OGC) has developed a standard for Client/Server interaction for delivery of Geospatial information known as Web Map Service (WMS). This protocol has the advantage that it is an Open standard designed to provide a uniform interface specification across a range of vendors. ResMap provides WMS support for imagery stored in the ECW and JPEG 2000 format.

Currently the supported features provide the GetCapabilities and the GetMap requests in accordance to the Version 1.1.1 of the Web Map Service Implementation Specification. This new capability allows vendors of image data to take advantage of the efficient ECW or JPEG 2000 compressed storage format while deploying an OGC compatible web service.

The WMS interface will allow you to move your application into the mainstream of the evolving OGC standards, which will work towards "future proofing" your development investment.

ESRI ArcXML

The ESRI ArcIMS GIS database product line has such a large installed base in both government and industry that its interface protocol, ArcXML, has become a de facto industry standard. This protocol can be used to supply image data to ESRI readers such as ArcExplorer, ArcExplorer Web and ArcMap.

ArcXML is implemented using an ISAPI extension to the Image Web Server which detects standard ESRI interface calls to the HTTP Web Server, initiates a image extraction request to the designated ECW image and returns a PNG or JPEG image to the requesting application in the prescribed ArcXML protocol.

Enhanced Compression Wavelet Protocol (ECWP)

ResMap provides a very powerful "streaming imagery" solution known as Enhanced Compression Wavelet Protocol (ECWP) which is layered over standard HTTP and provides image data on demand from compressed ECW or JPEG 2000 image files.

To enable web browsers to use this protocol requires a one-time download (960Kbytes) of a free ECW JPEG 2000 plug-in. Alternately a Java Applet is available which does not require the plug-in but does require the Sun Java runtime (JRE) support.

Free plug-ins are also available for a large range of 3rd party applications such as ArcGIS and ArcView and are available from here.

The advantage of the ECWP protocol is that it provides significant performance enhancements over other protocols because it uses streaming technology with local caching and real-time pan and zoom. This can provide much faster response and significantly reduced network traffic. The only requirement of using the ECWP format for any application is that it requires the user to download and install enabling software in the form of a plug-in or in the case of the Java applet, a Java runtime environment (JRE).

ImageX (HTML image extraction - JPEG or PNG)

ImageX is a protocol developed to extract JPEG or PNG image files from compressed ECW or JPEG 2000 files and transfers them to a client browser application using standard HTTP communication.

This protocol is useful for generating thumbnails and previews from ECW and JEPG 2000 images. It can also be deployed very effectively as a "lite" viewer for specific applications where downloading a plug-in would be undesirable and where adherence to an open standard like WMS is not required. The advantages of the ImageX protocol is that it is a very simple interface to deploy in a standard HTML page and has fast response.

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GIS Services

ResMap offers GIS services through it's parent company, SPATIAL MAPPING LTD. These services include ESRI's ArcINFO 9.x and Bentley's GeoGraphics as GIS options. The GIS team creates topologically correct coverages that allow feature coding of the data (topological encoding) to database tables for further selection and mapping. The data is then ready for any type of spatial analysis.

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Custom Imagery Hosting

ResMap offers custom hosting services for satellite and/or ariel images to meet the data distribution needs of you organization. Distribution of large amounts of imagery within an organization can be technically challenging. Currently the large size of image data and network bandwidth limitations precludes making imagery available over a network, in particular the Internet. Typically, sites with imagery would post thumbnail JPEG compressed images for viewing on-line. Distribution of larger images is done via CD. Apart from the time taken and inconvenience, other problems are:

ResMap can solve these problems by hosting your imagery on secure sites that allow you and authorized users quick and easy access to the data regardless of location.

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Off-Line Satellite Images For Sale

Most of the imagery viewable on ResMap is available for off-line purchase. Custom datasets are being made available continuously. If you are interested in purchasing an off-line dataset that does not appear on our standard price list please contact us for a quote. Off-line datasets are available in any standard projection/datum and file format. Additionally, datasets can be combined (mosaiced) or reduced (subset) to cover your particular area of interest.

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Web Site Enhancement

ResMap can enhance your website by providing dynamic and spatial correct imagery or maps directly into your pages. The imagery can act as a location map of your organization or you can define your company's area of operations with a full resolution Landsat mosaic.

Integrate RESMAP with an ArcDesigner® Web Site

I-Wizard is a free tool that automatically integrates ArcDesigner created web sites with ResMap Imagery. You can download I-Wizard from:

http://www.resmap.com/instructions/plug-ins/I-Wizard_ArcIMS.exe

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WebGIS Site Acceleration

ResMap can accelerate the speed of your current WebGIS site. Serving large amounts of imagery quickly to users across an intranet or the Internet is challenging. ResMap, powered by the Image Web Server, is the perfect solution to enhance GIS servers such as ArcIMS®, MapXtreme®, MapGuide® and many other products. By adding an Image Web Server to a GIS web server site, fast imagery access and lower CPU and network bandwidth can be achieved in a very cost-effective manner.

It is important to note that the Image Web Server is used along side your GIS server, such as ArcIMS®, to enhance access to imagery whilst reducing server resource requirements. In other words, the Image Web Server acts as an enabling and accelerating agent to significantly improve performance. This provides the strong benefits of using Image Web Server and the WebGIS in a combined solution, at a reduced total cost.

Click here to download a document that benchmarks integration of ArcIMS® with Image Web Server as a specific example of enhanced imagery access in a current state-of-the-art WebGIS solution. The concepts and improvements detailed in this document also apply to other GIS servers, and their performance typically represents what is shown by ArcIMS®. Image Web Server is a product of Earth Resource Mapping, who also offers the ER Mapper product for preparing imagery and a wide range of free Enhanced Compressed Wavelet (ECW) plugins for accessing imagery within desktop applications. Earth Resource Mapping's products include Image Web Server, ER Mapper and ECW. These products are not associated in any way with ESRI® (producers of ArcIMS®), MapInfo® (producers of MapXtreme®) and Autodesk®(producers of MapGuide®).

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* WebGIS Site Hosting

Coming Soon - ArcIMS, MapServer & Manifold hosting and site construction.

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