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Presented by:

Ashley Summers & Steve Ashbee

April 2018

Denver Regional Aerial Photography Project 2018

Click to edit Master title style Click to edit Master title style Agenda

• Welcome and Introductions
• Spring Flight Update
• Interim WMTS and Geoserve
• Brief Geoserve Tour
• QAQC Procedure
• Partner GCPs
• Aesthetic Survey Results
• Orders
• Supplemental Imagery
• Upcoming Milestones
• Communication Schedule
• Imagery Derivatives
• Planimetrics 2018

If on the webinar, use chat to ask ?s If in the room, please use mics!

Overall Extent of Survey

6,031.75 Square Mile Area

• 5,283 tiles @ 3”

resolution

– 1,320.75 sq. miles

• 1,392 tiles/sq. miles

@ 6” resolution

• 3,319 tiles/sq. miles

@ 12” resolution

• Total of 9,994
• rthophoto tiles

3

Control and Flight Plan Overview

3” Acquisition

Sensor: Ultracam Eagle Focal Length: 100mm Bands: R,G,B, NIR Height AGL: 4,733’ Flight lines: 139 Images: 27,292 Side O/L: 35% End O/L: 80% Plan is supplemented with additional flight lines along street C/L’s in downtown core area.

4

Control and Flight Plan Overview

6” Acquisition

Sensor: Ultracam Eagle Focal Length: 100mm Bands: R,G,B, NIR Height AGL: 9,466’ Flight lines: 41 Images: 3,717 Side O/L: 30% End O/L: 80%

5

Control and Flight Plan Overview

12” Acquisition

Sensor: Ultracam Eagle Focal Length: 100mm Bands: R,G,B, NIR

North & East Blocks – Spring Flight Height AGL: 18,932’ Flight lines: 30 Images: 841 Side O/L: 30% End O/L: 60% West Block – Summer Flight Height AGL: 12,692’ Flight lines: 32 Images: 1,506 Side O/L: 30% End O/L: 60%

6

2018 Spring Acquisition Summary

Timeframe

• Contract Spring Flight season scheduled 15-Feb to 15

April

• Conditions offered opportunities to fly beginning 27-Feb
• Complete coverage was accomplished by 17-March

– One additional re-flight authorized 24-April to remedy a couple of small areas affected by clouds or cloud shadows.

7

Equipment

• 3 twin-engine, pressurized aircraft
• 2

2018 Spring Acquisition Summary

8

1 Turbo Merlin III (N9900) 2 Turbo-Commanders (N940U, N690EH)

Equipment

• 3 Vexcel UltraCam Eagle Cameras

2018 Spring Acquisition Summary

9

• Image size 20,010 by 13,080 pixels
• Color (multi-spectral capability) 4 channels – R, G, B & NIR
• Pixel size 5.2 μm
• Input data quantity per image 842 Mega Bytes

Stats

• 13 flight days

– Roughly 70 flight hours

• 16 mission (including re-flights)
• Approximately 62,000 exposures

– About 45 sensor hours

Challenges

• Air Traffic, especially east part of 3” ortho area, very

busy air space

• Weather at beginning and end of flight schedule

Opportunities

• ATC helpful and understanding
• Dry winter, little snow cover
• Weather was generally cooperative, especially during

1st two weeks of March

2018 Spring Acquisition Summary

10

Click to edit Master title style Click to edit Master title style Interim Imagery - “Quick Ortho” Services

• Interim data is being streamed already – months earlier than in

previous projects!

• The “Quick Ortho” methodology is meant to provide you with the

earliest possible access to the 2018 imagery. You will likely see positional accuracy and aesthetic issues (all to be corrected in your final deliverable).

• Everyone has access to the highest resolution captured, because:
• Creating multiple services and restricting access would delay delivery;
• The services are temporary and will expire when final deliveries are

made;

• QAQC will be better if everyone is looking at the best data; and
• It’s an opportunity to show the quality of the 3-inch data to those that

haven’t yet paid in for that resolution (there’s still time to buy-up!).

Click to edit Master title style Click to edit Master title style Interim Imagery - “Quick Ortho” Services

• Two options for access: Geoserve and a WMTS
• Geoserve is a proprietary web interface developed by

Sanborn that shows the imagery with other important contextual layers.

• This is what we will use in the fall for QAQC.
• The WMTS can be loaded in ArcGIS (be sure to Add

WMTS Server instead of a WMS server).

• One layer in the service – coming May 2018
• Color-balance – coming July 2018
• Final WMTS (ortho, no seamlines)– coming December 2018
• Credentials were distributed via email on 3/15/18.

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BRIEF GEOSERVE TOUR

Click to edit Master title style Click to edit Master title style QAQC Procedure

• Partners
• Use Geoserve to report

aesthetic issues including:

• Seamlines, shadows, building

lean, blur, haze, bridge distortion, etc.

• Assignments have already

been accepted.

• Work will be done in the fall.
• Training and criteria will be

provided.

• DRCOG
• Use past project GCPs to

evaluate positional accuracy.

• Who is responsible for DAT this

year? We are!

• Why? To save money and to

evaluate firsthand the cost/benefit of doing it ourselves…

Click to edit Master title style Click to edit Master title style Partner GCPs

• Did you lay out panels for

the spring flights?

• Will you lay out panels for

the summer flights?

• If yes, please:
• Send to DRCOG in case

we need additional points for DAT.

• Reference these

guidelines.

Click to edit Master title style Click to edit Master title style Aesthetics Survey Results

• Conducted in February
• 23 respondents
• Focused on contrast, since we determined color and

brightness preference during DRAPP 2016.

• The vote was to increase contrast for all resolutions

(between 25% for urban 3inch and 45% in rural 12inch when compared to 2016).

Click to edit Master title style Click to edit Master title style Orders

• No SID this year because a bug in the LizardTech software is

keeping us from generating multi-resolution SIDs. We still offer a compressed format (JPG2000).

• Orders have already been provided to Sanborn so they can

plan for packaging/shipping.

• If you didn’t respond to the order email, I used your 2016
• rder as a guide.
• You’ll get one more opportunity to review your order

(September 2018) to make any last minute changes.

• The full area might be delivered later after everything else.

Click to edit Master title style Click to edit Master title style Supplemental Imagery

• Partners received quotes in

mid-June 2017 that compared:

• Resolution
• Flight timing
• Estimated delivery dates
• Cost
• Coverage
• Positional accuracy
• QAQC Procedures
• Deliverables
• Trial availability
• Access to historical imagery
• Licensing
• Support for derivatives (e.g.

planimetrics)

• Google had the most interest.
• Not enough interest in any
• ption to fund it.
• RFP in January 2018 for

supplemental streaming services.

• Google (via Sanborn) won

the evaluation, but the consortium voted (96%) to not pursue that solution.

Click to edit Master title style Click to edit Master title style Supplemental Imagery

• What have I learned from these exercises?
• Past off-year imagery (i.e. 2017) is not enticing.
• Partners want fast turnaround time on current imagery.
• The supplemental options available to us are lacking, either:
• Not the right time period of capture
• Slow turnaround time
• License terms that don’t work for us
• Partners’ needs for supplemental imagery are more varied than for

the primary imagery (DRAPP)… so we are having a harder time determining a suitable solution.

• Discussion questions
• Is the DRAPP 2018 interim imagery WMTS satisfying the need for

quick turnaround on current imagery?

• Does our project still need a supplemental source? If so, what kind?

Click to edit Master title style Click to edit Master title style Upcoming Milestones

• Pilot review

June 18

• Reach out if you want to be involved!
• Mountain flight window

June - July 18

• If surveying panels, do so by the end of May!
• Processing & QAQC

Fall 18

• Be ready to take on your QAQC assignment!
• Deliveries & partner invoicing (#2)

Dec 18

• Check your email for order confirmations and invoices!

Click to edit Master title style Click to edit Master title style Communication Schedule

• Meetings (est. at major milestones):
• Kickoff – May 2017

✓

• Update (specs) – August 2017

✓

• Update (spring flights) – May 2018

✓

• Update (summer flights) – August 2018
• Wrap up – March 2019
• Most project communication will come to you via email and

will include:

• Letters of Intent – September 2017

✓

• Invoices – March 2018 ✓ and December 2018 (or at your request)
• Flight status – multiple throughout spring and summer 2018
• WMS credentials – spring 2018 ✓ and winter 2019
• Custom order information – spring 2018 ✓
• Polls – as needed

Click to edit Master title style Click to edit Master title style Regional Planimetrics Project 2018

• What: A regional project to

acquire building roofprints, sidewalk centerlines, parking lots and more!

• When: Delineations occur in

2019, project planning happening now.

• Why: To update previously

collected data on the built environment and leverage

• ur investment in imagery
• How: With contributions

from users like you!

Click to edit Master title style Click to edit Master title style Regional Planimetrics Project 2018

What makes this data valuable?

• Very detailed (1:100 map scale)
• Manually drawn (no automated methods = no errors of commission)
• Based on DRAPP imagery (high resolution and strict positional accuracy

standards)

• Current (updated every two years following completion of DRAPP)

How is the data being used? Public agencies

• Water modeling | emergency response planning | floodplain analysis | asset

management | bike/ped master planning | scenario planning - visualizing reality Private companies

• App to help the visually impaired navigate as pedestrians | selling attribution

that attaches to our geometries | consulting firms doing better work for local clients like cities and counties | site selection apps Researchers

• Evaluating intersection safety | estimating energy savings

Click to edit Master title style Click to edit Master title style Regional Planimetrics Project 2018

• Goal – gain more partners so that this project can become

routine just like DRAPP and:

• Continually provide current high-quality data at a small

fraction of the cost of ad hoc projects;

• Consistently generate standardized built environment layers

for the region;

• Drive research, innovation, and entrepreneurship by sharing
• ur data with our communities.

Click to edit Master title style Click to edit Master title style Regional Planimetrics Project 2018

• Where are we in the process?
• Quotes
• If you need one, reach out to asummers@drcog.org
• Scoping
• Join me for a meeting on June 28th to discuss use

cases, needs, requirements…and advice from your peers on how to integrate updates into your

• perational workflows.

Click to edit Master title style Click to edit Master title style FYI – DRCOG is moving!

Where are we going? 1001 17th St When are we going? June 9, 2018

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QUESTIONS?

Email me at asummers@drcog.org