ANG LEE
SOFTWARE ENGINEER, MAGICIAN
http://anglee.org
ang.lee[at]gmail.com

Projects::ERDAS IMAGINE Projects

ERDAS IMAGINE® is the world’s foremost remote sensing solution, providing tools to create, manage and analyze imagery to increase the value of geospatial information. I am proud to be an active contributor as a member IMAGINE core development team.

Selected projects I've worked on:

 

ERDAS IMAGINE Viewer - faster raster/vector
Viewer is the core application for displaying and editing multilayers of raster, vector and annotation data.

I participated in all aspects of viewer with a focus on enhancing the core visualization technologies which results in dramatic performance boost and user productivity increase.

Viewer

Links:

ERDAS.com

ERDAS IMAGINE (Product info)

ERDAS IMAGINE 9.3 Brochure (.pdf)

 

 

ERDAS IMAGINE VirtualGIS
IMAGINE VirtualGIS is a 3D visualization tool. It allows roaming of large database with real time performance. Multiple layers of raster, annotation, and vector imagery can be viewed and queried within a virtual environment. I made contribution in code maintenance and enhancements.


Links:

IMAGINE VirtualGIS (Product info)

IMAGINE VirtualGIS Brochure (.pdf)

 

 

ERDAS IMAGINE AutoSync - geometric model integration
IMAGINE AutoSync automatically aligns two or more images of potentially dissimilar types, such as data from different sensors or with different resolutions. I integrated an array of geometric models to broaden the transforms supported.

Links:

IMAGINE AutoSync (Product info)

IMAGINE AutoSync Brochure (.pdf)

Wikipedia Entry - Georeference

 

 

ERDAS IMAGINE Radar Mapping Suite - InSAR
Radar mapping is known for its precision, providing day-and-night and all-weather information that cannot be extracted using traditional photogrammetric methods. I participated in the InSAR project which is about generating digital elevation models (DEMs) from a pair of interferometric images.

Links:

IMAGINE Radar Mapping Suite (Product info)

IMAGINE Rader Mapping Suite Brochure (.pdf)

Wikipedia Entry - InSAR

 

 

New UI for ERDAS IMAGINE 2010

NewUI

Links:

ERDAS Labs

ERDAS IMAGINE UI

 

 

Ehlers fusion - algorithm integration
Since higher resolution imagery is generally single band, while multispectral imagery generally has the lower resolutions, resolution merge techniques are often used to produce high resolution, multispectral imagery. Ehlers Fusion is an image fusion algorithm invented by Prof. Manfred Ehlers, University of Osnabrück. I helped integrate it into IMAGINE.

Links:

Multi-image Fusion in Remote Sensing: Spatial Enhancement vs. Spectral Characteristics Preservation

Spatial and Spectral Evaluation of Image Fusion Methods (.ppt)

Wikipedia Entry - Image fusion

 

 

ALOS sensor formats
ALOS (Advanced Land Observation Satellite) is a satellite lauched in 2006. It has three remote sensing instruments PRISM for digital elevation mapping, AVNIR-2 for land coverage observation, and a radar sensor PALSAR.

I added the support of reading levels of product of all three sensors in all formats from all data distributors.

Links:

PALSAR product list (.png)

Wikipedia Entry - ALOS

 


Last update: 5/25/2009
Ang Lee 4371 Winters Chapel Rd., Apt#3226 Atlanta, GA 30360, USA
(C) Copyright, Ang Lee, 2009, All rights reserved.