Project Technical Support

Name Balaji Viswanathan

Address **** * **** ****** *** 2203, Tucson, Arizona 85719

E-mail ******.****@*****.***/************@*****.*******.***

Career Objective

Aspiring for a career to work in a challenging position with special interest in GIS,

Remote Sensing and Digital Image Processing. Willing to work in a fast-paced

learning environment for developing my technical and inter-personal skills thereby

adding immense value to the Organization.

Profile Summary

4.5 years of overall experience in Geospatial industry, worked with LiDAR Data

Classification, 3D modelling using LiDAR Data, 3D GIS solutions and ArcGIS Desktop

Development and Web applications development using ArcGIS Server APIs.

Possess good communication, team management and client handling skills.

Technical Skills

Operating Systems Windows 2000/XP/VISTA/7, Ubuntu 12.04

Programming languages C, C++, JAVA, VB.NET/C#.NET, Silverlight

Technologies and Standards J2EE - JSP, Servlets.

Scripting and

Markup Languages Javascript, HTML, XML, Python, Actionscript

Javascript frameworks Dojo, ExtJS

GIS Software ArcGIS Desktop 9.3.1/10.0, ArcGIS Server 10.0

Open-source GIS Geoserver 2.2.4, Quantum GIS, PostGIS

Remote Sensing Packages ERDAS IMAGINE 8.5, ENVI 4.0, IDL 6.0

3D Software Global Mapper

LiDAR Packages MicroStation V8.0, TerraSolid family

Environments Visual Studio 2008/2010, Eclipse 3.6, Tomcat 5.5

Server, Adobe Flash Builder 4.0/4.5

Educational Qualification

MS – Geographic Information Systems Technology from University of Arizona,

Tucson (Current)

B.E – Electronics and Communications Engineering from Thiagarajar College of

Engineering, Madurai, India with CGPA of 8.92/10 in 2008.

Career Summary

Cybertech Systems and Software Limited : July 2011 – Nov 2012

Encora Technologies India Private Limited : September 2010 – June 2011

Groupe SCE India Private Limited : August 2008 – August 2010

Project Summary

Jul 2011 – Nov 2012

Project Technical Support Analyst, SDK Unit

Client ESRI Inc, Redlands, USA

Location Cybertech Systems and Software Limited, Thane, India

Role Subject Matter Expert (SME) - GIS

• Provided Technical Support on ArcGIS Software Development Kit to ESRI

Clients across USA

• Worked with custom tools/commands/Add-ins for ArcGIS Desktop 10.0 as per

the client requirements in C#/VB.NET

• Worked with ArcGIS Server 10.0 applications after completing formal training

sessions on ArcGIS Server APIs

• Testing the product in all forms and submitting bug reports to the ESRI

Development Team

• Helping customers to understand the way software works and providing them

necessary suggestions/workflow/code snippets to implement their desired

functionality in the Web application

Project Profile: The main role has been to support clients in development/extending

GIS applications using ArcObjects framework. This gave me an exposure to various

interfaces involved in extending ArcGIS Desktop using ArcObjects. ArcGIS Server 10.0

is a product to expose our GIS data to the outside network and has been used in wide

range of applications, starting from mapping to editing, quering and analyzing GIS

datasets over the web. The requirement demanded me to have an extensive

knowledge on Server API applications developed using ArcGIS Silverlight API/Flex

API/Javascript API to support high volume of support calls from our customers. I am

fortunate to have this opportunity, as it helped me to understand the applications

being developed using the GIS technology by helping out several customers of ESRI.

In addition to providing Technical Support, I have been given an opportunity to

provide training on ArcObjects programming, ArcGIS Server 10.0 concepts, Web

programming using different ArcGIS Server APIs – Javascript/Flex/Silverlight,

Developing customized web applications using ArcGIS Silverlight Viewer and ArcGIS

Flex Viewer.

Environment: Visual Studio 2010, Flash Builder 4.0/4.5, Javascript, REST, JSON,

Flex/Actionscript

Sep 2010 – Jun 2011

Project Web-Apps - Dashboard development for Google Map Maker.

Client Google India Private Limited

Location Google India, Bangalore

Role Sr Geo Data Specialist

• Worked with developing web application hosted on Apache Open Source

Server

• Worked with developing an application to get the moderated edits coming in

from users across the world on Google Map Maker

• Worked with server-side programming implementation using Servlets and JSP

pages serving as web front-end

• Worked with statistical data generation to display all the information, starting

from moderated edits, moderated person, action taken by the moderator,

errors in moderation etc.

• Worked with implementation for all type of GIS features created in the

application – Point, Line and Polygon

Project Profile: The Objective is to develop a J2EE Web-application hosted on

Apache Tomcat Server, which will enable the team to get a Statistical Analysis of

Google Map Maker edits happening throughout the world. This application enables

the Google Map Maker QA team to extract the Moderation edits captured from

Google Server for further QA’ing the edits, thereby increasing the Accuracy of Google

Maps data. This also provides an option to extract the In-house Moderation Statistics

and User Moderation Statistics happening in all countries over a large duration. The

number of edits getting Auto-Approved every day purely depends on the User’s Trust

Score and the Type of the Feature (Admin/Non-Admin features) being edited.

Statistics also include the major categories being edited by User’s in Google Map

Maker, which will enable the Map Maker team to include some new categories into

the product. Geo Team was also interested in finding out the Turn-Around Time,

which includes the time between a feature is created in Map Maker and the time

taken to moderate the feature or time taken for the moderator to request the User

for more information on the feature. A Web Project was created in Eclipse IDE hosting

all the JSP pages and Servlets in Apache Tomcat Server.

Environment: Java, J2EE, Apache Tomcat 5.5 Server, Eclipse

May 2010 – Aug 2010

Project Automatic Texturing of 3D Buildings

Client Japan Government

Location Bangalore-India

Role ArcGIS Desktop Developer

• Worked with creation of 3D buildings with the help of LiDAR data, which has

accurate information about the earth surface.

• Worked with developing custom Geoprocessing tool to automate the

Texturing of 3D buildings.

• Learnt and worked with ArcObjects framework provided by ESRI to extend the

ArcGIS functionalities.

• Created Model Builder consisting of various tools to perform the logic for

verification of each step.

• Wrote the complete code in C#.NET, built the application and deployed on

customer’s machines

Project Profile: The Objective is to develop a system which automates the

Texturing of 3D buildings. Photo_Point, a GPS point Featureclass holding an image of

that location and Building_Point containing the vertex points of the 3D buildings are

provided as input. A Geoprocessing tool needs to be developed, which needs to

generate Line Featureclass by radiating from one GPS point to all the other

Building_points. Another task includes radiating from one GPS point to all the other

points and Extending the line to user specified distance. So, this needs identification

of the third point (x,y), which aligns in the same orientation with some distance from

the second point. The third task would be to Generate Triangles for each GPS point at

a user specified Apex Angle and Hypotenuse Distance. This process is carried out to

find out the Coverage of each photograph, which would help to identify the Texture

matching exactly each face of the 3D building.

The tool was developed using ArcGIS Geoprocessing API, implementing

IGPFunctionFactory and IGPFunction Interfaces, providing all the input parameters

through ParameterInfo method, Validating the parameters and providing the errors

through IGPMessages Interface. The tool was compiled as DLL, thereby distributing to

all other users. I was involved in Design, Implementation and Coding of

Geoprocessing tool in C#.NET environment.

Environment: ArcMap, ArcCatalog, ArcScene, C#.NET

Key terms: Geoprocessing API, IGPFunctionFactory, IGPFunction, IGPMessages

Mar 2010 – Apr 2010

Project 3D Building Modeling with reference to LiDAR data

Client German Government

Location Bangalore-India

Role ArcGIS Desktop Developer

Project Profile: The main objective is to develop a system which automatically

constructs 3D buildings with reference to the LiDAR data. The LiDAR point cloud

(DSM) and Ground model (DGM) are provided as input, out of which 3D buildings has

to be generated. The user has to digitize the end-points of the building and the roof

points, thereby height of the building is calculated by making a Spatial Join with a

Buffer radius of 2m with the LiDAR point cloud (DSM). The Roof top of the building is

obtained by generating a Triangulated Irregular Network (TIN), interpolating it to get

a Multipatch 3D Featureclass. A similar process is carried out by making a Spatial Join

of Roof points with the Ground model (DGM) to obtain a Triangulated Irregular

Network (TIN) for the Ground. Finally, the Wall of the building is generated by

Extruding 2D Polyline Featureclass between Roof TIN and Ground TIN. Later, a

complete building is obtained by Appending Roof, Wall and Ground Multipatch

Featureclass. The entire process is implemented in ArcGIS ModelBuilder. I have

worked with the Design, Implementation and Analysis of various requirements for this

project.

A limitation was observed when we tried to create TIN for large number of datasets.

A tool has been developed in VB6 environment which exports the large datasets into

individual buildings based on the UniqueID to overcome this issue.

Environment: ArcMap, ArcCatalog, ArcScene, ModelBuilder, Python, VB6

Key terms: Triangulated Irregular Network, DSM, DGM, Multipatch Featureclass,

Spatial Join, Join Tables, Append Datasets.

Project Management Suite: Tracking of all projects both Resource-wise and

project-wise was a tedious task. A customized tool has been developed, where the

project management became easier. Once the user provides the Target productivity

(Buildings/Hr or Parcels/Hr or Area/Hr) set for the project, the tool provides the

Resource productivity, Efficiency, % of Production completed, Overall project

statistics. Development of the tool was done on MS-Excel Visual Basic for Applications

(VBA) Environment.

May 2009 – Jul 2009

Project Creation of Building Footrpints with reference to Orthophoto

Client Virtuel City, Germany

Location Bangalore-India

Role Quality Assessment.

Project Profile: The building footprints were digitized with reference to the

Orthophoto provided, which were further used to develop 3D city models. The

variation in the levels of the buildings were sorted out as per the specifications. The

building IDs missed out in each tile were identified through ArcGIS tool, where it

searches each row in the attribute table associated with the shapefile and finds out

the ID missing in the shape file. I was involved in the development of ArcGIS tool and

assessing the quality of the tiles.

Environment: ArcMap, ArcCatalog, VB6.

Feb 2009 – Apr 2009

Project Classification of Wetland areas with reference to Orthophoto

Client Memoris, France

Location Bangalore-India

Role Quality Assessment.

Project Profile: The wetland areas include Agriculture, Waterbody, Grassland and

Forestry regions has to be digitized and classified at 1:2000 scale for the regions

which falls inside the project boundary. A Personal Geodatabase was created and the

classification was handled by assigning Domains and Subtypes to the Geodatabase,

thereby avoiding errors in spelling caused by digitizers. Finally, a report has been

made on the area statistics for each class.

Environment: ArcMap, ArcCatalog, ArcScripts (Domain creation in VBA)

Aug 2008 – Jan 2009

Project GIS Master Plan for the city of Tripoli

Client Tripoli Government

Location Bangalore-India

Role Quality Assessment, Production.

Project Profile: The project involves planning the city of Tripoli for 2025 as per the

2G and 3G norms. The proposal has been made to the Tripoli Government and

delivered in the form of maps for validation. The maps were delivered for both

existing landuse and proposed landuse. The existing landuse map was generated

with the help of the building inventory points collected through the field survey. The

proposed landuse map as per Urban planning and GIS concepts, finally validating the

topology. Further, a separate map was provided which includes all the heritage

places at Tripoli and instructions have been received for not altering the Old city of

Tripoli. The final maps were delivered at 1:5000 scale.

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