Geometric Evaluation of Mobile-Phone Camera Images for 3D Information
Table 2
Results of bundle adjustsments.
gcp
ap
chk
r
Sigma0 (μm) pixel
gcp (mm) chk (mm)
gcp (mm) chk (mm)
gcp (mm) chk (mm)
gcp (mm) chk (mm)
gcp (mm) chk (mm)
gcp (mm) chk (mm)
iPhone 5
10
0
70
2902
4.76
0.166
0.166
0.224
0.211
0.158
0.437
3.40
0.232
0.231
0.373
0.541
0.542
1.198
10
10
70
2874
0.55
0.019
0.019
0.026
0.011
0.028
0.030
0.39
0.027
0.027
0.042
0.055
0.038
0.079
80
10
—
2853
0.53
—
—
—
—
—
—
Free
0.38
0.023
0.23
0.035
0.044
0.042
0.075
Nokia C7
10
0
70
2980
6.09
0.219
0.219
0.281
0.232
0.183
0.285
4.35
0.292
0.291
0.406
0.818
0.835
1.040
10
10
70
3016
0.56
0.019
0.019
0.025
0.013
0.018
0.042
0.40
0.027
0.026
0.036
0.046
0.040
0.075
80
10
—
2987
055
—
—
—
—
—
—
Free
0.39
0.023
0.022
0.029
0.047
0.040
0.079
Galaxy S3
10
0
70
3090
3.14
0.109
0.110
0.153
0.148
0.113
0.165
2.24
0.160
0.160
0.310
0.598
0.600
0.719
10
10
70
3218
0.49
0.017
0.017
0.024
0.011
0.014
0.013
0.35
0.026
0.025
0.048
0.043
0.032
0.071
80
10
—
3195
0.49
—
—
—
—
—
—
Free
0.35
0.023
0.023
0.041
0.078
0.058
0.216
Galaxy S4
10
0
70
3172
6.71
0.229
0.230
0.301
0.213
0.174
0.441
5.89
0.315
0.318
0.436
0.512
0.837
1.242
10
10
70
3216
0.27
0.009
0.009
0.012
0.012
0.015
0.018
0.24
0.013
0.013
0.018
0.026
0.022
0.031
80
10
—
3197
0.27
—
—
—
—
—
—
Free
0.24
0.011
0.011
0.014
0.028
0.028
0.035
Xperia S
10
0
70
3262
13.22
0.447
0.448
0.623
0.338
0.248
0.917
11.02
0.607
0.607
1.120
1.479
1.550
3.176
10
10
70
3112
0.57
0.019
0.019
0.027
0.013
0.018
0.016
0.48
0.027
0.027
0.048
0.048
0.047
0.052
80
10
—
3095
0.57
—
—
—
—
—
—
Free
0.48
0.024
0.024
0.041
0.051
0.043
0.053
IXUS 960 IS
10
10
70
2742
0.63
0.018
0.019
0.026
0.026
0.022
0.027
0.34
0.021
0.021
0.029
0.045
0.051
0.040
80
10
—
2761
0.66
—
—
—
—
—
—
Free
0.36
0.017
0.017
0.022
0.046
0.050
0.039
gcp/chk: number of control points/independent checkpoints, respectively. ap: number of additional parameters. r: redundancy. sigma0: standard deviation of image observations a posteriori. : average theoretical precision values of chk/gcp coordinates. : empirical accuracies of chk/gcp coordinates.
