Transcript Document
Xth International Scientific and Technical Conference
From Imagery to Map: Digital Photogrammetric Technologies
Effective techniques for working in
PHOTOMOD
Alexandra Kiseleva
Manager of Technical Support Department
September 2010, Gaeta, Italy
Effective techniques for working in PHOTOMOD
Resource system. Creating data structure
Resource system. Network profiles management
ADS imagery processing. Data preparation
Import of orientation data for digital frame cameras
UltraCam data processing. Metadata import
Creating block layout for automatic tie points measurement
Block layout accuracy control
Improving block layout with DEM
Show marker position in Google Maps and Yandex Maps
Distributed processing
PHOTOMOD 5. Resource System
\\Server1
Share1\
Share2\
Share3\
\\Server2
Share1\
Share2\
Share3\
Data distributed over multiple
network shares
Logical virtual data tree in
PHOTOMOD Resources
PHOTOMOD 5. Resource System
Example: real production configuration
Several TB of data residing in 9
network folders of 3 file-servers
Resource tree in the
PHOTOMOD Explorer
PHOTOMOD 5. Resource System
Manage network configuration
from a single working place
PHOTOMOD 5. ADS imagery processing
Set of ADS Level 1 source files
Necessary ADS Level 1 files for each image:
*.sup
*.ads
*.odf
*.odf.adj
*.tif
Camera files with interior orientation data:
*.cam
misalignment.dat
PHOTOMOD 5. ADS imagery processing
Prepare ADS data
Solve ambiguities appearing when copying
Level 1 data from one computer to another
PHOTOMOD 5. Project creation. Import of orientation data
1) Obtain source images
UltraCam images with metadata
JPEG files with EXIF structure
2) Convert the imagery to MS-TIFF
Metadata is extracted into separate XML files
3) Load the converted images into PHOTOMOD project
MS-TIFF files with pyramid
XML files with metadata
4) Use metadata information
for automatic camera file creation and interior orientation
for automatic block splitting into strips and block layout creation
PHOTOMOD 5. Importing UltraCam metadata
UltraCam metadata contains
Interior orientation parameters
Angular and linear exterior orientation parameters
GPS-time
PHOTOMOD 5. Creating block layout for automatic tie points measurement
Source data
Survey of mountainous terrain, 600 images
Coordinates of projection centers
Relief elevation 0-1300 meters
Accurate block layout helps to increase speed and quality of automatic tie points
measurement
PHOTOMOD 5. Block layout accuracy control
Right-click an image
Press D key to show ruler
Point search area exceeds 2000 pixels, it may lead to tie points misfiring.
It is necessary to improve the block layout
PHOTOMOD 5. Improving block layout with DEM
SRTM DEM fragment for the site
Before
After
PHOTOMOD 5. Show marker position in Google Maps
Service – Show in Google Maps
Google Maps
Clipboard
Check for consistency between
your project and the real world
Google Earth
PHOTOMOD 5. Show marker position in Yandex Maps
Service – Show in Yandex Maps
Check for consistency between
your project and the real world
Yandex Maps
Yandex Maps
PHOTOMOD 5. Distributed processing
File-server with
project data
Processing
workstations
Distributed processing is supported for
Converting images to PHOTOMOD format
Automatic points computing
Creation of orthophoto sheets
See you at Training classes on 22nd September!
Thank you for attention!