Monitoring Change in West TX using NAIP Imagery from the Texas Natural Resources Information System

Frank Obusek - Hexagon Geospatial

Transcript

1. Monitoring Change in West Texas using NAIP Imagery from the Texas Natural Resources Information System Frank Obusek – Applications Engineer TX GIS Forum October 28th, 2015
2. Confidential 2 Abstract •  Monitoring Change in West TX using NAIP Imagery from the Texas Natural Resources Information System •  In the world of oil and gas exploration the land surface is subjected to change with the addition of new roads and drilling rigs that dot the landscape. The rapid change can negatively affect the environment and ground water resources as well as have an impact on land and mineral ownership issues. Updating a GIS database to reflect the latest changes in an area of resource exploration can be challenging using manual methods. •  Remote sensing using multiple dates of NAIP imagery from the Texas Natural Resources Information System allows for accurate change detection to help monitor the new additions of roads and drilling sites. This presentation describes a workflow used to prepare image data, detect new change, and output update features as a vector data set. By monitoring change in this way, GIS databases can be kept up to date in areas where there is rapid change.
3. Confidential 3 Why is Change Detection important? •  Change detection is one of the most relevant applications of geospatial technology •  Millions of dollars are invested in geospatial content but those data are often not utilized to their full potential •  Millions of dollars are invested in geospatial technology that can be used to perform change detection
4. Confidential 4 Why is Change Detection important? •  Monitor urban growth and mitigate its environmental impacts •  Monitor tree canopy loss and focus tree planting efforts •  Assessment of damage from natural disasters •  Management of assets in the field •  Increase efficiencies with new transportation routing options
5. Confidential 5 Change Detection Methods •  On-site field visits •  Visual “stare and compare” of before and after geospatial data •  Image Data •  Vector Data •  Landcover Data •  Image processing and analytics
6. Confidential 6 Image Processing and Analytics •  More efficient approach to update your GIS database •  Utilizes ortho imagery •  Utilizes elevation data •  Utilizes vector data •  Several algorithms are available using remote sensing •  Image Differencing •  Discriminant Function Change •  DeltaCue Change •  Zonal Change Detection •  Spatial Modeling •  Vector GIS data output for quick integration into your existing GIS
7. Confidential 7 Example Change Detection Products Semi-Global Matching Enabled Change Detection DeltaCue Change Detection Discriminant Function Change Detection Zonal Change Detection
8. Confidential 8 Permian Basin Exploration •  Oil & Gas producing area in West Texas •  Approximately 250 miles wide and 300 miles long •  Producing more than •  270 Million barrels of oil in 2010 •  280 Million barrels of oil in 2011 •  Has produced 29 Billion barrels of oil •  Has produced 75 Trillion cubic feet of gas •  Estimated to contain recoverable oil and natural gas resources exceeding what has been produced over the last 90 years. http://www.rrc.state.tx.us/oil-gas/major-oil-gas-formations/permian-basin/#general Source: Railroad Commission of Texas Drilling Permit Online Query System
9. Confidential 9 Study Area of West T E X A S 59 Counties in the Permian Basin Map of Active Wells: Oil = Green, Gas = Red http://www.rrc.state.tx.us/oil-gas/major-oil-gas-formations/permian-basin/#general Source: Railroad Commission of Texas Drilling Permit Online Query System
10. Confidential 10 TX Permian Basin Drilling Permits Issued: 2006 - 2015 http://www.rrc.state.tx.us/oil-gas/major-oil-gas-formations/permian-basin/#general Source: Railroad Commission of Texas Drilling Permit Online Query System
11. Confidential 11 TX Permian Basin Oil Production: 2008 – August 2015 http://www.rrc.state.tx.us/oil-gas/major-oil-gas-formations/permian-basin/#general Source: Railroad Commission of Texas Drilling Permit Online Query System
12. Confidential 12 TX Permian Basin Total Natural Gas Production: 2008 - 2015 http://www.rrc.state.tx.us/oil-gas/major-oil-gas-formations/permian-basin/#general Source: Railroad Commission of Texas Drilling Permit Online Query System
13. Confidential 13 Identifying new caliche roads and drilling platforms
14. Confidential 14 Data Used in Change Detection •  Texas Natural Resources Information System •  Downloaded NAIP Imagery for Andrews County •  2012 & 2010 4-band NAIP Imagery •  Downloaded & Unzipped
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17. Confidential 17 Image Mosaics •  NAIP Source is JP2 (JPEG 2000) Format •  Created 2012 & 2010 Image Mosaics •  Color Balancing was performed using Image Dodging in ERDAS IMAGINE MosaicPro
18. Confidential 18 2010 NAIP Tiles displayed using individual histogram look up tables
19. Confidential 19 2010 NAIP Mosaic: Tonal balance corected using Image Dodging
20. Confidential 20 2012 NAIP Tiles displayed using individual histogram look up tables
21. Confidential 21 2012 NAIP Mosaic: Tonal balance corected using Image Dodging
22. Confidential 22 Mosaics: NAIP Bands displayed with NAIP Sensor Model
23. Confidential 23 2010
24. Confidential 24 2012
25. Confidential 25 Change Detection with DeltaCue •  Identify changes of interest in remotely sensed imagery acquired on two different dates. •  DeltaCue can distinguish significant change from insignificant change and then helps you identify changes that are of specific interest to your application. •  The DeltaCue Wizard is the primary method to produce an initial set of change detection results in broad area search mode. •  The Wizard steps you through a sequence of dialogs that capture all of the necessary inputs to run the DeltaCue process. The software creates a project settings file and a workspace directory to hold intermediate files. •  When the wizard process completes, the Change Display Viewer launches automatically so that you can view and analyze the change detection results. •  You can run new processing iterations from within the Change Display Viewer to identify different varieties of change in the imagery.
26. Confidential 26 DeltaCue Wizard •  Dialog 1: Project Specification •  Dialog 2: Image Cropping •  Dialog 3: Image Normalization •  Dialog 4: Change Detection Algorithms •  Dialog 5: Change Filters •  Dialog 6: Material Filtering and Final Output
27. Confidential 27 Project Setup 1.) Name Project 2.) Name Time 1 Image File 3.) Name Time 2 Image File 4.) Specify Sensor 5.) Click Next
28. Confidential 28 Option to crop Images 1.) Select No 2.) Select Next
29. Confidential 29 Image Normalization 1.) Allow Image Normalization. Do not check the box. 2.) Select Next
30. Confidential 30 Choose Change Detection Method 1.) Make sure Magnitude Diff is selected. 2.) Select Interactive Thresholds 3.) Select Next
31. Confidential 31 Change Detection Filters 1.) Ensure that Spectral Segmentation is checked on. 2.) Select Next
32. Confidential 32 Material Filtering 1.) Skip Material Filtering 2.) Name Output Image Name to magdif1.img 3.) Select Finish
33. Confidential 33 Threshold Processing This take a little bit of time.
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36. Confidential 36 Testing threshold settings
37. Confidential 37 Processing Change Detection for only the pixels specified in the Threshold Settings. This take a little bit of time.
38. Confidential 38 Change Display 1.) Zoom In 2.) Match Views
39. Confidential 39 Change Display 1.) Before, After and Transition options. 2.) Look at Swipe and Flicker options Reviewing initial results Before After
40. Confidential 40 Magnify View 1.) Select the Open/Close Change Magnifier icon. 2.) Then select the Magnification Center Icon. 3.) Click on a group of colored pixels.
41. Confidential 41 Magnify View 1.) Select the Magnification Center Icon again. 3.) Click on an area where there is a feature but no colored pixels.
42. Confidential 42 Change Selection 1.) Review the Before and After Selection of classified pixels. 2. Determine which colors are real change and which colors are not real change. 3.) Use the – minus icon to select colored pixels that are not real change. Switch between Before/After to assist your determination.
43. Confidential 43 Change Selection 1.) Use the – minus icon to select colored pixels that are not real change. Switch between Before/After to assist your determination. 2.) Re-select the – minus sign icon to select another group of color pixels that are not real change.
44. Confidential 44 Change Selection 1.) Roam around the image data to find other examples of false change. 2.) Use the + plus sign to fix areas white that were removed because there were selected an false change. Use the Before/After select to assist in your determination. Note: Reset Icon resets the colored pixels back to the original state.
45. Confidential 45 Change Selection 1.) Click Apply Icon when your happy with your selections. Note: Its okay to have some false change included.
46. Confidential 46 Change Selection 1.) Review Results 2.) Vectorize remaining color pixels. 3.) Save as change.shp in the project directory. Note: Saving change will take a few minutes.
47. Confidential 47 Review Output 1.) In the IMAGINE Viewer Right Click then Select Open Vector Layer… to open change.shp in the viewer. 2.) Display with original andrews2010.img image.
48. Confidential 48 Review Output 1.) Use the Vector Drawing Tab to change the change.shp display to Yellow without line boundaries. 2. Zoom in to center region for a closer look.
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50. Confidential 50 Old roads New roads
51. Confidential 51 Summary •  Remote Sensing Analytics can be used for efficient change detection between images of 2 different dates. •  DeltaCue can distinguish significant change from insignificant change •  Vector polygon output of the results. •  Combine with existing vector layers to update GIS database. •  Great for routing equipment •  Assess the environmental impact
52. Questions & Answers Thank You! Questions? Frank Obusek Applications Engineer O: 828-298-7508 M: 828-273-9187 E: frank.obusek@hexagongeospatial.com