Workshop #2 : Integrating Drone Data into Your GIS Workflow

WAGISA  Conference, Tacoma, WA.

June 16, 2025

Keisha Chinn: WSDOT - Enviromental Information Program Manager

Peter Keum, GISP - KC Wastewater Treatment - Drone Program Lead

Introduction

• Name

• Organization, if there's one

• Level of understanding

1.1

Let's get started!

1.1

Not Easy!

but....

1.1

Schedule: Part 1 

Break (10 min)

Break (10 min)

( 8:30 AM - Noon) 

1.1

Quick overview of part 1

Schedule: Part 2

Break (10 min)

Break (10 min)

( 1:30 PM - 5:00 PM) 

1.1

1.1

Photogrammetry = taking measurement from photos

 Data Processing

Drone Photogrammetry is the process of using drone-captured images to create accurate 3D models or/and maps of the real world

1.1

Drone Photogrammetry

1.1

 Mission Planning Software (data collection) - Flight Control App  

• Fly Consistently for overlapping images
• Can fly manually but it's like mowing with scissors

1.1

1.1

1.1

1.1

Ground Sample Distance

"the distance between the centers of two adjacent pixels in an image measured on the ground."

Smaller GSD the higher the resolution

1.1

1.1

GSD ~ 0.48in/px

1.1

• Update 2D aerial map

South Treatment Plant

GSD

0.57 in/px

Sept 2023

GSD

3.0 in/px

2021 KC Aerial

1.1

1.1

Input Sequences for 3D Model 

#1

#1

#2

#3

#4

1.1

Keisha

1. What is it? - accuracy

2. How to create it? - hardware/software (workflow)

1.3

1. What is it? - Relative vs Absolute Accuracy

Accuracy & Precision

1.3

1.3

1. What is it? - Relative vs Absolute Accuracy

Relative Accuracy - Accurate Internal  Measurement

15.68 ft

1.3

1. What is it? - Relative vs Absolute Accuracy

Relative Accuracy - 3 things that impacts 

1. Flight height - Lower and Slower
2. Image Overlap  - Minium of 70%
3. Photo angles 

1.3

1. What is it? - Relative vs Absolute Accuracy

Absolute Accuracy - How closely the collected data match their  real-world position 

1.3

2. How to create it? - Hardware/Software (workflow)

RTK  = Real Time Kinematic

No RTK Drone  Error : (3 to 5 feet)

RTK Drone  Error: 1 ~ 4 cm

1.3

RTK - Real-Time Kinematic

PPK - Post Processing Kinematic

1.3

Ortho imagery being corrected to GCP

1.3

1.3

2. How to create it? - Hardware/Software (workflow)

1.3

Trimble DA2 Catalyst + Esri Field Maps

Min. 5 GCPs

add 

Checkpoints

2. How to create it? - Hardware/Software (workflow)

Step: 1

1.3

ArcGIS Online

Hosted Feature

Layer

1.3

2. How to create it? - Hardware/Software  

Trimble DA2 Catalyst ($400) + Subscription + Esri Field Maps

DJI Mavic 3 Enterprise RTK Receiver

~ $4300

Step: 2

1.3

2. How to create it? - Hardware/Software (workflow)

1.3

Examples

1.3

Keisha 

1.4

Schedule: Part 2

Break (10 min)

Break (10 min)

( 1:30 PM - 5:00 PM) 

Keisha 

KC WTD Processing Software

DroneDeploy

• Mission Planning
• Data Processing
• Product Sharing
• Multi-level 

2.2

• Public
• No AGO Account
• Group Sharing
• Share with everyone
• Security

• Internal Only
• No AGO Account (KC)
• Group Sharing
• Selected Data to share

2.2

• Environmental Monitoring

Kenmore Twin Springs Mitigation Site

August 2022

March 2022

April 2023

KC WTD Examples 

Mitigation and Monitoring Group

2.2

Kenmore Twin Springs

BW Alpha Hill

BW Lower Pond - thermal

North Creek Interceptor

• Update 2D aerial map - DroneDeploy

KC WTD Examples - Operation & Project management

South Treatment Plant

• 1172 Photos

• 0.57in/px

2.2

Esri 3D AGO Scene Viewer App - South Treatment Plant

2.2

Esri 3D AGO Scene Viewer App - West Point Treatment

2.2

Schedule: Part 2

Break (10 min)

Break (10 min)

( 1:30 PM - 5:00 PM) 

Schedule: Part 2

( 1:30 PM - 5:00 PM) 

• Survey123 -> Dashboard
• Integration with ArcPro
• Drone2Map & SiteScan to AGO/AGE App

3.1

Esri Survey 123 -> Dashboard

Flight Management

3.1

Survey123 Web Form

• Keep Track of flight requests
• Location of flights
• Classify types of flights
• Integrate w/ GIS

Esri Survey 123 -> Dashboard

Flight Management

3.1

• Sharable
• Editable 
• Report generating (if needed)

• Public
• No AGO Account
• Group Sharing
• Share with everyone
• Security

• Internal Only
• No AGO Account (KC)
• Group Sharing
• Selected Data to share

3.1

3.1

Value of layers

• Update 2D aerial map - DroneDeploy

KC WTD Examples - Operation & Project management

South Treatment Plant

• 1172 Photos

• 0.57in/px

3.1

AGO Tile Layer

3.1

AGO Tile Layer --> ArcPro

3.1

AGO Tile Layer --> ArcPro

3.1

AGO Tile Layer --> ArcPro

3.1

AGO Tile Layer --> ArcPro

3.1

Lastly, Oriented Image Viewer

3.1

3.1

Proof Of Concept

Lidar SLAM Handheld Unit

Video of Scan Path

3.1

Proof Of Concept

Lidar SLAM Handheld Unit

Walk through 3D model

3.1

Proof Of Concept

Lidar SLAM Handheld Unit

Examples

3.1

END   for now.....

Washington GIS Association Drone Special Interest Group

• Email Sign-up
• Resources

• Every 3rd Thursday
• ZOOM Meeting
• 165 Members

Washington GIS Association

Remotely Piloted Aircraft System (RPAS)

Special Interest Group

• Monthly Meeting - Every 3rd Thursday over Zoom 
• Share resources online
• Help educate and introduce new users to the field of drone mapping and GIS