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Stereo on PC. WE CAN OBSERVE THAT THE PLOTTING OVERLAYS THE IMAGE MANTAINING THE PERSPECTIVE RECTIFICATION AND PLOTTING OF SINGLE IMAGE THE ORIENTATIÓN.

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Presentation on theme: "Stereo on PC. WE CAN OBSERVE THAT THE PLOTTING OVERLAYS THE IMAGE MANTAINING THE PERSPECTIVE RECTIFICATION AND PLOTTING OF SINGLE IMAGE THE ORIENTATIÓN."— Presentation transcript:

1 Stereo on PC

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

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

4 metric camera, 23 x 23 cm 2

5 RELATIVE ORIENTATION

6 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: IN THIS SYSTEM THE Y AXIS IS NOT PERPENDICULAR TO THE FACADE Y AXIS IS PERPENDICULAR TO THE FACADE. WE GOT THE SUITABLE DATUM Rotate the system about vertical axis to make XZ plane parallel to the façade

7

8 OUTPUT OF THE ORIENTATION PROCESS

9 All the types of points used for the orientations

10 the marked points define two vectors with known lenght: 100-101 (18.19 MT) Y 102-103 (14.67 MT).

11 ORIENTATION of non-metric stereo pairs

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

13 DIGITAL PHOTOGRAMMETRIC WORKSTATION STEREOMETRIC PRO by Galileo Siscam. 4)

14 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

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

16 STEREOVISION

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

18 CONTROL NETWORK August-September 2000 Features total Station Topcon GTP 1002 175 control points plan-altimetric accuracy ± 0.5 cm Adjustment Software : RETE 11 theodolite stazions

19 Features Rollei 6008 semi-metric 6X6 52 images Focal length: 40,37 mm average scale 1:200 \ 1:300 AUGUSTUS TEMPLE IN ANKARA PHOTOGRAMMETRIC SURVEY August-September 2000

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


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