Click to edit Master title styleClick to edit Master title style

Presented by:

Ashley Summers

May 11, 2017

Denver

Regional

Aerial

Photography

Project 2018

Kick-off

Meeting

Click to edit Master title styleClick to edit Master title styleAgenda

• Welcome and introductions

• Introduction to DRAPP

• New DRAPP Steering Committee

• Results from 2018 Requirements Survey

• 2018 Project Specifications

• New in 2018

• 2018 Boundary Proposal

• Supplemental Imagery Sources + Demo

• Project Timeline

• Next Steps

If on the webinar,

use chat to ask ?s

If in the room,

please use mics!

Click to edit Master title styleClick to edit Master title styleWhat is DRAPP?

DRCOG has facilitated a project to acquire high resolution aerial photography over the Denver Region every two years since 2002 on behalf of ~50 public partners.

• Passes Cost Savings onto Partners - Due to economies of scale, DRAPP partners benefit from the lower square mileage costs of capturing a large area and splitting those costs amongst partners with overlapping needs.

• Increases Collaboration in the Region - The product provides a common "basemap" that our partners can reference when working together. It’s also the underlying data source for planimetric features like building roofprints and sidewalks.

• Reduces Duplication of Effort - If our partners individually attempted this project, they’d each have to write RFPs, manage contracts and vendors, and QAQC their deliverables. With DRAPP, DRCOG provides these services.

Click to edit Master title styleClick to edit Master title styleHow is DRAPP imagery used?

• Basemap: static maps &

print publications, web

applications, field units for

data collection & dispatch

• Derivative data

development: feature

digitization

• Asset management:

monitoring change in the

built and natural

environment

• Analysis:

• Multi-jurisdictional storm

water master planning

studies

• Property owner flood risk

notifications

• Vegetation studies

• Project planning (replace or

reduce field work)

Click to edit Master title styleClick to edit Master title styleThank you to the Steering Committee!

1. Adams County

2. Jefferson County

3. City and County

of Denver

4. Boulder

5. Castle Rock

6. Centennial

7. Englewood

8. Erie

9. Lone Tree

10. Douglas County

Click to edit Master title styleClick to edit Master title styleSurvey Results – Project Players

Question Answer Respondents

Planning to participate in DRAPP 2018

89% Yes 35

Renew contract with Sanborn

91% Yes 32

Renew contract with Harris (DAT)

84% Yes 32

Renew contract with Harris (WMS)

81% Yes 31

We don’t have to go out for RFP!

What will we do with all our free time?

Click to edit Master title styleClick to edit Master title styleSurvey Results – Spec Changes

Question Answer Respondents

Change spring flight window to 2/1-4/15

76% Yes15% Don’t care

34

Change summer flight window to 6/1-7/31

64% Yes36% Don’t care

33

Relax sun angle requirements in eastern plains to 30 degrees

46% Yes46% Don’t care

35

Drop the SID 82% Yes15% Yes but

33

Change Approved!

Change Approved!

Change Approved!

Change Approved! Saves

$

What is the impact of these changes?

Click to edit Master title styleClick to edit Master title styleSurvey Results – Boundaries & Funding

Question Answer Respondents

Pay more to adjust boundaries

70% Yes (but no more than 30%)

33

Participate anyway if boundaries are not adjusted

88% Yes 33

Drop areas with no partner participation

30% Yes27% Yes IF15% No27% Don’t care

33

Drop or upgrade 12 in 64% Yes27% Don’t care

33

Click to edit Master title styleClick to edit Master title style2018 Project Specifications

• 4-band orthoimagery

• Regional extent (approx. 7,000 sqmi)

• 3 inch, 6 inch, 12 inch resolutions

• Feb/Mar/Apr and June/July flight windows (metro and mountains, respectively)

• Strict sun angle requirements to reduce shadows

• Strict overlap and sidelaprequirements to reduce building lean

• Snow-free and leaf-off

• Meets strict ASPRS positional accuracy standards

• Independent quality control performed on every tile

Click to edit Master title styleClick to edit Master title style2018 Project Deliverables

• Tiled imagery on hard drive

• 3 projection options

• 2 format options

• Streaming services (WMS/WMTS)

• Interim imagery (2018)

• Final imagery (2018)

• Historical imagery (2002-2016)

• Associated files

• Metadata, tile indices, DEM

• Extras

• Planimetric feature update

• Supplemental imagery service

Click to edit Master title styleClick to edit Master title styleNew in 2018 - Summary

• Steering Committee

• Vendor contract renewal

• Adjusted specs

• Imagery workshop – Stay tuned for details

• Aesthetics survey – Stay tuned for details

• Handouts

• Image Aesthetics – what influences how the imagery looks?

• 3-inch vs. 6-inch – what are the advantages?

• Using the Interim WMS – what to expect

• DRAPP Specs – how we build in quality

• DRAPP vs. Other Imagery Sources

• Adjusted extents?

Click to edit Master title styleClick to edit Master title style2018 Boundary Proposal - draft

• Expands 3in so muni

boundaries and AOI

are not bisected by

resolution boundary

• Still tweaking

boundary lines; not

final

Click to edit Master title styleClick to edit Master title styleWhat is supplemental imagery?

An imagery source in addition to DRAPP that fills the gap

between our project deliverables:

• Off-season (i.e. summer/fall)

• Off-year (i.e. 2019)

• In urbanized areas where more change occurs

• Focus is on more frequent delivery, with less attention to

accuracy, delivery options, licensing etc.

Click to edit Master title styleClick to edit Master title styleSupplemental Imagery Sources

Google NearMap

Resolution 6 inch 3 inch

Flight date(s) Annually-usually fall 2-3 times per year

Cost ~$5/sqkm (tiles) ?

Full coverage of region No – 2836 sqmi No – 2100 sqmi

Custom flights No Yes

Accuracy Lower than DRAPP; 1ft RMSE

Lower than DRAPP; 3ft RMSE

Access Tile download (via Sanborn) orstreaming service (+$)

Streaming service

Includes historical No Yes

License Perpetual license (tiles); annual subscription (service)

Subscription only

Transfer existing contracts No need Potentially

Supports planimetrics No No

Options we know about so far…

Click to edit Master title styleClick to edit Master title style

NEARMAP DEMO

Denver presents:

Click to edit Master title styleClick to edit Master title styleProject Timeline

May ‘17 Kick off meeting and emailed quotes

Jul-Aug ‘17 Image Processing Workshop & Aesthetics Survey

Aug-Dec ’17 LOIs and vendors contracts

Aug- ‘17-Jan DRCOG & vendors plan

Feb-Apr ’18 Front Range flight window & partner invoicing (#1)

Jun-Jul ’18 Mountain flight window

Jul-Aug ’18 Pilot review & Interim WMS

Aug-Nov ’18 Processing & QAQC

Dec ’18 Deliveries & partner invoicing (#2)

Click to edit Master title styleClick to edit Master title styleNext Steps

• Stay tuned for:

• Cost quote

• If you were a 2016 partner, you will receive a quote

automatically.

• If not, please reach out to let me know you are interested.

• Aesthetics survey

• Image processing workshop

• Handouts

• Emailed updates

Click to edit Master title styleClick to edit Master title style

QUESTIONS?

Email me at asummers@drcog.org