Stereo on PC RECTIFICATION AND PLOTTING OF SINGLE

Stereo on PC

RECTIFICATION AND PLOTTING OF SINGLE IMAGE THE ORIENTATIÓN CAN BE ACHIEVED: • BY CONTROL POINTS • BY KNOWN DISTANCES BETWEEN COUPLES OF POINTS WE CAN OBSERVE THAT THE PLOTTING OVERLAYS THE IMAGE MANTAINING THE PERSPECTIVE

Interior Orientation • DIGITAL CAMERA: THE CORNERS OF THE IMAGE • METRIC OR SEMIMETRIC CAMERA: THE FIDUCIAL MARKS MARK IMPRESSED ON THE PLATE BY THE RESEAU MARKING THE CORNER PHOTOGRAPH TAKEN WITH A SEMI-METRIC CAMERA, FORMAT 6 X 6 CM 2 PHOTOGRAPH OF THE DIGITAL CAMERA

metric camera, 23 x 23 cm 2

RELATIVE ORIENTATION

• For facade plotting, in comparison to the aerial images, we will change the coordinate (y) with the elevation of the points (z). We will keep XZ plane parallel to the working plane. In case that it is not as such: Rotate the system about vertical axis to make XZ plane parallel to the façade IN THIS SYSTEM THE Y AXIS IS NOT PERPENDICULAR TO THE FACADE Y AXIS IS PERPENDICULAR TO THE FACADE. WE GOT THE SUITABLE DATUM

OUTPUT OF THE ORIENTATION PROCESS

All the types of points used for the orientations

the marked points define two vectors with known lenght: 100 -101 (18. 19 MT) Y 102 -103 (14. 67 MT).

ORIENTATION of non-metric stereo pairs

Marrakesh – Bab Agnau (courtesy of School of Arabic Studies)

4) DIGITAL PHOTOGRAMMETRIC WORKSTATION STEREOMETRIC PRO by Galileo Siscam.

Topics: HARDWARE DEVICE FOR STEREO VISION PLOTTING WITH STEREOMETRIC PRO AN ARCHITECTURAL EXAMPLE: THE AUGUSTUS’ TEMPLE IN ANKARA TEST ON AERIAL TRIANGULATION CONSTRUCTION OF A DEM WITH DEM MANAGER FEATURES : EVALUATUION AND CONCLUSIONS

HARDWARE FOR STEREO- VISION Transmitter to the glass Track-Ball CRYSTAL EYES Control unit Nu. VISION 60 GX Mouse

STEREOVISION

PLOTTING WITH STEREOMETRIC PRO – Galileo Siscam INPUT DATA DIGITIZED IMAGES PHOTOGRAMMETRIC SURVEY • stereo coverage • scanning at suitable resolution CONTROL NETWORK GEODETIC SURVEY • Suitable quantity and distribution • Accuracy CAMERA PARAMETERS • Focal distance • Coordinates of fiducial marks • Distortion CALIBRATION CERTIFICATE

CONTROL NETWORK August-September 2000 Features • total Station Topcon GTP 1002 • 11 theodolite stazions • 175 control points • Adjustment Software : RETE • plan-altimetric accuracy ± 0. 5 cm

AUGUSTUS TEMPLE IN ANKARA PHOTOGRAMMETRIC SURVEY August-September 2000 Features • Rollei 6008 semi-metric 6 X 6 • Focal length: 40, 37 mm • 52 images • average scale 1: 200 1: 300

INPUT DATA Project set-up: AUGUSTUS’ TEMPLE IN ANKARA • ACCURACY OF THE CONTROL POINTS ± 1 CM • IMMAGE SCANNING AT 1200 DPI (Dot Per Inch) PIXEL size 21 Micron 52 IMAGES AVERAGE SCALE 1: 200 -1: 300 43 PLOTTED MODELS