2-5-9
• Knowledge-based feature extraction and object
recognition
In many applications, mobile mapping systems are used to
update and extend an existing database. Road and/or object
knowledge can be derived from databases and used to guide the
implementation of feature extraction and even object
recognition. Object recognition is highly complicated, and
cannot be performed without the use of knowledge of the road
scenes.
• Integrated image-based bridging, calibration and quality
control and object measurement
Multiple image based image matching can not only be used for
object measurement, but also for image bridging, camera
calibration and quality control of GPS/INS geo referencing
component. Image-based bridging, camera calibration, quality
control of georeferencing component and object measurement
can be processed in an integrated manner. The nature of these
methods is that the stereoscopic and sequential imaging
geometry constraint is available and the multinocular vision
theory and methods can be utilized to tackle the essential issue
- 2D to 3D transformation.
ACKNOWLEDGEMENT
Special thanks go to Dr. R. Li and Dr. K-P. Schwarz for their
valuable comments and beneficial discussions. Appreciation
also goes to graduate students who have been developing and
testing the software. The support from the Canadian Natural
Science and Engineering research Council (NSERC) and
private industry sectors are acknowledged.
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