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= Spacecraft Zenith Variations: Comparison of Results = = Spacecraft Zenith Variations =

== Aim and Objectives ==

'''Purpose of test:''' .

'''Additional Objectives'''
 * .

== Methodology ==

'''Data'''
 * Data was generated by .
 * Location and parameters for evaluation area.
 * Image Suite: Image resolutions: 50cm, 20cm, 10cm, 5cm.
  * emission
    * .
  * incidence
    * .
    * .

|| Name || Sun || S/C Az || S/C Zenith ||
|| Test11S || 45, 0, -45 || every 45 || 0, 30, 60 || ||
|| Test11T || 45, 0, -45 || every 45 || 0, 20, 40, 60, 80 || ||
|| Test11U || 45, 0, -45 || every 45 || 0, 14, 30, 45, 60, 75 || ||


Spacecraft:

{{attachment:SC_perfectF2_POLARS.jpg||width=300}}

Sun:

{{attachment:SUN_perfectF2_POLARS.jpg||width=300}}

'''Bigmaps'''

The following TAG1 bigmaps were tiled/iterated and evaluated:

Starting topography defined from: ?

||Step||GSD||Overlap Ratio||Q Size||Width||
||35cm-Tiling||
||18cm-Tiling||
||9cm-Tiling||
||5cm-Tiling||


'''Iteration Parameters'''

Reset albedo/slopes: ?YES

Calculate Central Vector: ?YES

Differential Stereo: ?YES

Shadows: ?NO

== Results ==

[[Comparative Results]]

[[Test11S Results]]

[[Test11T Results]]

[[Test11U Results]]

Spacecraft Zenith Variations

Aim and Objectives

Purpose of test: .

Additional Objectives

  • .

Methodology

Data

  • Data was generated by .
  • Location and parameters for evaluation area.
  • Image Suite: Image resolutions: 50cm, 20cm, 10cm, 5cm.
    • emission
      • .
    • incidence
      • .
      • .

Name

Sun

S/C Az

S/C Zenith

Test11S

45, 0, -45

every 45

0, 30, 60

Test11T

45, 0, -45

every 45

0, 20, 40, 60, 80

Test11U

45, 0, -45

every 45

0, 14, 30, 45, 60, 75

Spacecraft:

Sun:

Bigmaps

The following TAG1 bigmaps were tiled/iterated and evaluated:

Starting topography defined from: ?

Step

GSD

Overlap Ratio

Q Size

Width

35cm-Tiling

18cm-Tiling

9cm-Tiling

5cm-Tiling

Iteration Parameters

Reset albedo/slopes: ?YES

Calculate Central Vector: ?YES

Differential Stereo: ?YES

Shadows: ?NO

Results

Comparative Results

Test11S Results

Test11T Results

Test11U Results

Discussion

The measures of accuracy are plotted for each test in figures ?? to ?? under Tables and Figures (below).

Figure 1: Minima

Minima-resized.png

Figure 1 illustrates the minimum uncertainty and RMSs for each test, and at which iteration each minimum occurs. The following patterns are apparent:

  • Test U achieves the minimum value for every measure in the least number of iterations: 5 to 15 iterations sooner than Test T; and 15 to 20 iterations sooner than Test S (excluding Test S - CompMapVec RMS).

  • Test S consistently gives the largest RMS but the smallest formal uncertainty.
  • CompareOBJ RMS (with and without optimal translation and rotation varies across tests by less than 0.2cm, although Test U consistently archives the minimum RMS in significantly fewer iterations.

Tables and Figures

Formal Uncertainty

FormalUncertainty-resized.png

CompMapVec RMS

CompMapVec-resized.png

CompareOBJ RMS

CompareOBJRMS-resized.png

CompareOBJ With Opt Tran & Rot

CompOBJwOptTranRot-resized.png

Traces Running North_South

transitIt20200.png transitIt40200.png

Traces Running West-East

transposedTransitIt20200.png transposedTransitIt40200.png

Heat Plots

heatPlot-T11RFS-05stepB020-1cm-4m.png heatPlot-T11RFT-05stepB020-1cm-4m.png heatPlot-T11RFU-05stepB020-1cm-4m.png

heatPlot-T11RFS-05stepB040-1cm-4m.png heatPlot-T11RFT-05stepB040-1cm-4m.png heatPlot-T11RFU-05stepB040-1cm-4m.png

Test Over11STU Comparative Results (last edited 2015-12-16 16:45:24 by DianeLambert)