Home | about DEM&P | Portfolio of Work | Photo Gallery | Contact Brenda

Portfolio of Work

Welcome,

Over the last 20 yrs being a mapping & remote sensing  specialist I have mapped a wide variety of natural environments from forest to alpine bogs. I specialize in collecting and mapping information using stereoscopic interpretation of digital aerial images. I use  the latest ESRI software and if required a traditional stereoscope. To get an idea of what can be delivered  from stereoscopic aerial imagery have a look at the below examples of the projects I have delivered. I can also interpret older film images if necessary.

 I also create maps using ESRI ArcMap Desktop. I have placed a selection of maps that I have produced for various clients. For example, I can create maps showing a clients GPS data that they have collected, which I then  clean, attribute and produce a final map product. I also keep a copy of the clients data on my secure back up library for 3 years so the client has a safe copy of their project outside the office.

Aerial mapping starts at $1.15 per Ha depending on the complexity and size of the project.

Map creation is set at 250.00 to set up the map project and 60.00 an hour there after.

Below  is an explanation of why stereoscopic aerial image interpretation should not be overlooked as a management tool.

Please enjoy a  wonder through my portfolio to see the possibilities!


   
ARID WOODLAND
FOREST
RAINFOREST/UNDERSTORY
ALPINE BOGS
MAP CREATION

   

 



PESTS GRAMPIANS WEED PROJECT FLOOD RECOVERY \THREATENED ECOSYSTEMS

With the invention of digital aerial imagery a new opportunity has arisen to map much greater detail than ever before with much greater accuracy directly into digital form. No more paper photos that have poor colour, no more hand written mapping to be digitized and misinterpreted. My Software which is an extension to the ESRI ArcMap mapping suite uses a  Digital Elevation Model (DEM) to create line-work which makes the mapping much more accurate. Total time from mapping to data analysis is greatly shortened saving resources and money. I can achieve a 90% accuracy rate with good aerial imagery of the correct detail, good DEM data and field validation.

Mapping in the 3D (stereoscopic) environment gives many advantages to 2 dimensional mapping. Better detail can be seen and captured due to clear height delineation between targets very important in the forest or other vegetation mapping, more detailed texture, and a  clearer view through shadow. It is even possible to map age class for temperate rainforest.

  Aerial image interpretation creates  very accurate and detailed base data. A good base data set greatly extends the use of lower resolution satellite data for long term monitoring.

A near Infra-Red (IR) band often comes standard with many aerial images. Often IR can greatly enrich many mapping projects. Maximum reflectance from vegetation occurs in the near infra-red region of the photographic and electromagnetic spectrum. Often this can show stress on vegetation prior to it becoming obvious to the naked eye which may aid in management decisions  to prevent further damage or death. Fire damage can be more readily discerned. Moisture in the soil can be readily observed. Soil with higher moisture content has a darker tone. Infra–red is also very useful in discerning wetland boundaries, floating aquatic species and algal blooms.

Finally, it also has excellent haze penetration which creates slightly sharper images which can be very advantageous during summer capture when Australia’s “blue haze” is heavy.

Home | about DEM&P | Portfolio of Work | Photo Gallery | Contact Brenda

Take only photos, leave only footsteps, kill only time.
Copyright Brenda Galey 2012