Differences between revisions 1 and 35 (spanning 34 versions)

Spacecraft Zenith Variations

Aim and Objectives

Purpose of Test 11: To evaluate SPC's ability to represent a simplified 'boulder' which has a constant 20 degree slope.

Objective for Test 11 S, T & U, Spacecraft Zenith Variations

To investigate the effect of varying the combination of spacecraft zenith (emission angle) contained in the image suite;
To investigate the effect of the number of images and viewing conditions.

Methodology

The 'boulder' was simulated by generating a simple axe-symmetric, flat-topped cone (peak) with a constant 20 degree slope. Multiple peaks and (simplified) craters are randomly placed in an otherwise flat landscape of width approx. 22.5m.

Truth map: REGION.MAP

Bigmaps

The following TAG1 bigmaps were tiled/iterated and evaluated:

Starting topography defined from: START1.MAP at pixel/line location 49, 49 (= REGION.MAP at p/l 1125, 1125).

Step	GSD	Overlap Ratio	Q Size	Width	Center
START.MAP	20cm	-	49	20m	REGION.MAP p/l 1125, 1125 (center)
10cm-Tiling	10cm	1.3	130	20m	START1.MAP, p/l 49, 49
5cm-Tiling	5cm	1.3	250	20m	START1.MAP, p/l 49, 49
5cm-Iterations	5cm	-	-	20m	START1.MAP, p/l 49, 49
Evaluation Map	1cm	-	200	4m	REGION.MAP, p/l 996, 1005

Tiling/Iteration Parameters

Auto-Elimination Parameters:	0, 60, .25, .25, 0, 3
Reset albedo/slopes	NO
Determine Central Vector	YES
Differential Stereo	YES
Shadows	YES

Tiling seed files: t11-10.seed , Test Over11STU t11-05.seed

Iteration seed file : Test Over11STU Piterate2StSh-withoutayy.seed

Data

Data was generated by ??.
Image resolutions: 2cm/pixel.

Name	Sun	S/C Az	S/C Zenith	Total Number of Images
Test11S	45, 0, -45	every 45	0, 30, 60	80
Test11T	45, 0, -45	every 45	0, 20, 40, 60	112
Test11U	45, 0, -45	every 45	0, 15, 30, 45, 60	144

Note that a larger image suite was planned and produced than was utilized during test. The images for a number of planned viewing conditions were eliminated due to image quality related to the viewing conditions being unfit for SPC. For further details are contained here:

Test11STU Unsuitable Viewing Conditions.

Test11S Viewing Conditions

Test11T Viewing Conditions

Test11U Viewing Conditions

Results

Results with Overlaps:

Test Over11STU Comparative Results

Test Over11S Results

Test Over11T Results

Test Over11U Results

Results without Overlaps:

Test11S Results

Test11T Results

Test11U Results

-  ⇤ ← Revision 1 as of 2015-11-24 17:48:38 → 
  Size: 2968
  Editor: DianeLambert
  Comment:
+   ← Revision 35 as of 2015-11-25 14:57:27 → ⇥
  Size: 3113
  Editor: DianeLambert
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 5:
-'''Purpose of test:''' .
+'''Purpose of Test 11:''' To evaluate SPC's ability to represent a simplified 'boulder' which has a constant 20 degree slope.
 Line 7:
-'''Additional Objectives''' 
 * .
+'''Objective for Test 11 S, T & U, Spacecraft Zenith Variations''' 
 * To investigate the effect of varying the combination of spacecraft zenith (emission angle) contained in the image suite;
 * To investigate the effect of the number of images and viewing conditions.
-Line 12:
+Line 13:
-'''Data'''
 * Data was generated by .
 * Location and parameters for evaluation area.  
 * Image Suite: Image resolutions: 50cm, 20cm, 10cm, 5cm.
  * emission
    * .
  * incidence
    * .
    * .
+The 'boulder' was simulated by generating a simple axe-symmetric, flat-topped cone (peak) with a constant 20 degree slope. Multiple peaks and (simplified) craters are randomly placed in an otherwise flat landscape of width approx. 22.5m.
-Line 22:
+Line 15:
-|| 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}}
+'''Truth map:''' REGION.MAP
-Line 40:
+Line 21:
-Starting topography defined from: ?
+Starting topography defined from: START1.MAP at pixel/line location 49, 49 (= REGION.MAP at p/l 1125, 1125).
-Line 42:
+Line 23:
-||Step||GSD||Overlap Ratio||Q Size||Width||
||35cm-Tiling||
||18cm-Tiling||
||9cm-Tiling||
||5cm-Tiling||
+||Step||GSD||Overlap Ratio||Q Size||Width||Center||
||START.MAP||20cm||-||49||20m||REGION.MAP p/l 1125, 1125 (center)||
||10cm-Tiling||10cm||1.3||130||20m||START1.MAP, p/l 49, 49||
||5cm-Tiling||5cm||1.3||250||20m||START1.MAP, p/l 49, 49||
||5cm-Iterations||5cm||-||-||20m||START1.MAP, p/l 49, 49||
||Evaluation Map||1cm||-||200||4m||REGION.MAP, p/l 996, 1005||
-Line 48:
+Line 30:
+'''Tiling/Iteration Parameters'''
-Line 49:
+Line 32:
-'''Iteration Parameters'''
+||Auto-Elimination Parameters:||0, 60, .25, .25, 0, 3||
||Reset albedo/slopes||NO||
||Determine Central Vector||YES||
||Differential Stereo||YES||
||Shadows||YES||
-Line 51:
+Line 38:
-Reset albedo/slopes: ?YES
+'''Tiling seed files:'''
[[Test Over11STU t11-10.seed|t11-10.seed]] ,
[[Test Over11STU t11-05.seed]]
-Line 53:
+Line 42:
-Calculate Central Vector: ?YES
+'''Iteration seed file :'''
[[Test Over11STU Piterate2StSh-withoutayy.seed]]
-Line 55:
+Line 45:
-Differential Stereo: ?YES
+'''Data'''
 * Data was generated by ??.  
 * Image resolutions: 2cm/pixel.
-Line 57:
+Line 49:
-Shadows: ?NO
+|| Name || Sun || S/C Az || S/C Zenith || Total Number of Images ||
|| Test11S || 45, 0, -45 || every 45 || 0, 30, 60 || 80 ||
|| Test11T || 45, 0, -45 || every 45 || 0, 20, 40, 60 || 112 ||
|| Test11U || 45, 0, -45 || every 45 || 0, 15, 30, 45, 60 || 144 ||

Note that a larger image suite was planned and produced than was utilized during test. The images for a number of planned viewing conditions were eliminated due to image quality related to the viewing conditions being unfit for SPC. For further details are contained here: 

[[Test11STU Unsuitable Viewing Conditions]].

'''Test11S Viewing Conditions'''

{{attachment:Over11S_EE0057_sc_plot_resized.png}}
{{attachment:Over11S_EE0057_sun_plot_resized.png}}

'''Test11T Viewing Conditions'''

{{attachment:Over11T_EE0057_sc_plot_resized.png}}
{{attachment:Over11T_EE0057_sun_plot_resized.png}}

'''Test11U Viewing Conditions'''

{{attachment:Over11U_EE0057_sc_plot_resized.png}}
{{attachment:Over11U_EE0057_sun_plot_resized.png}}
-Line 61:
+Line 76:
-[[Test11STU Comparative Results]]
+'''Results with Overlaps:'''

[[Test Over11STU Comparative Results]]

[[Test Over11S Results]]

[[Test Over11T Results]]

[[Test Over11U Results]]

'''Results without Overlaps:'''
-Line 71:
+Line 96:
-The measures of accuracy are plotted for each test in figures ?? to ?? under Tables and Figures (below).

'''Figure 1: Minima'''

{{attachment: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'''

{{attachment:FormalUncertainty-resized.png}}

'''CompMapVec RMS'''

{{attachment:CompMapVec-resized.png}}

'''CompareOBJ RMS'''

{{attachment:CompareOBJRMS-resized.png}}

'''CompareOBJ With Opt Tran & Rot'''

{{attachment:CompOBJwOptTranRot-resized.png}}

'''Traces Running North_South'''

{{attachment:transitIt20200.png}}
{{attachment:transitIt40200.png}}

'''Traces Running West-East'''

{{attachment:transposedTransitIt20200.png}}
{{attachment:transposedTransitIt40200.png}}

'''Heat Plots'''

{{attachment:heatPlot-T11RFS-05stepB020-1cm-4m.png}}
{{attachment:heatPlot-T11RFT-05stepB020-1cm-4m.png}}
{{attachment:heatPlot-T11RFU-05stepB020-1cm-4m.png}}

{{attachment:heatPlot-T11RFS-05stepB040-1cm-4m.png}}
{{attachment:heatPlot-T11RFT-05stepB040-1cm-4m.png}}
{{attachment:heatPlot-T11RFU-05stepB040-1cm-4m.png}}

Spacecraft Zenith Variations

Aim and Objectives

Methodology

Results

Discussion