User:the Three Gorges'Survey Center
Date: November,2006
performed the survey on Dam Tail water Slope Engineering.
The report was as follows:
20 photos were taken in 4 camera stations with 5 photos taken at every camera station with the camera type Canon EOS-1Ds MarkⅡ,the image's format 36*24mm (4992*3328pixels),the pixel’s size 7.2μm,the photographic distance 236m and the GSD about 2.0m.
Graph 1: pictures token on first station
Graph2 : TIN landscape
Graph3:Point clouds(the inside is the positive direction)
The precision of experiment:
The number of reference points |
The number of check points |
rms (cm) |
Relative precision |
X |
Z |
Y(depth) |
precision of points |
14 |
12 |
0.79 |
0.53 |
1.28 |
1.59 |
1/14843 |
4 |
22 |
1.13 |
0.84 |
2.64 |
2.99 |
1/7893 |
|