Normalized Cross-Correlation Evaluation
This page describes the methodology for using normalized cross-correlation to evaluate a region of the model.
Cross-correlation is performed on the following images:
- Model: Image of bigmap
- Truth: Image of Zmaps
Model (left), Truth (right), S/C Azimuth 0, Zenith 30deg, Sun Azimuth 90deg, Zenith 45deg:
Images are generated using the following set of dirty sumfiles at the required resolution to include:
- low and high phase
- low and moderate incidence
- full set of s/c azimuth angles (observe region from all directions).
Spacecraft |
Sun |
||
Azimuth (deg) |
Zenith (deg) |
Azimuth (deg) |
Zenith (deg) |
0 |
30 |
90 |
45 |
90 |
30 |
90 |
45 |
180 |
30 |
90 |
45 |
270 |
30 |
90 |
45 |
0 |
30 |
270 |
45 |
90 |
30 |
270 |
45 |
180 |
30 |
270 |
45 |
270 |
30 |
270 |
45 |
45 |
10 |
270 |
10 |
Images resolution is chosen from the following based on the state of the model:
- Resolution: 120cm, 75cm, 35cm, 18cm, 9cm, 5cm.
The following regions have been identified for evaluation:
Region ID |
Region Name |
Latitude (deg) |
West Longitude (deg) |
Description |
TG |
TAG Site 1 |
-10 |
350 |
Shape 4 TAG site 1 |
R1 |
Region 1 |
45 |
300 |
Region of roughness, identified from a visual inspection using Small Body Mapping Tool |
Where are the Dirty Sumfiles and Truth Images?
SUMFILES: ormacsrv1:/opt/local/spc/shape4/imageGen/DIRTYSUMFILES/
Truth .pgm files: ormacsrv1:/opt/local/spc/shape4/imageGen/PGMFILES/
Follow this link for details of the image file and bigmap naming conventions: Normalized Cross-Correlation Evaluation - Naming Conventions
Obtain Model Bigmap
Obtain the required bigmap/s from the model working directory (or back-up). A full set of bigmap .in files is stored here:
/opt/local/spc/shape4/support4/ MR1051_model_REG1_GSD5cm_width100m.in MR1052_model_REG1_GSD5cm_width20m.in MR1055_model_REG1_GSD5cm_width50m.in MR1101_model_REG1_GSD10cm_width100m.in MR1102_model_REG1_GSD10cm_width20m.in MR1105_model_REG1_GSD10cm_width50m.in MR1351_model_REG1_GSD35cm_width100m.in MR1352_model_REG1_GSD35cm_width20m.in MR1355_model_REG1_GSD35cm_width50m.in MTG051_model_TAG1_GSD5cm_width100m.in MTG052_model_TAG1_GSD5cm_width20m.in MTG055_model_TAG1_GSD5cm_width50m.in MTG101_model_TAG1_GSD10cm_width100m.in MTG102_model_TAG1_GSD10cm_width20m.in MTG105_model_TAG1_GSD10cm_width50m.in MTG351_model_TAG1_GSD35cm_width100m.in MTG352_model_TAG1_GSD35cm_width20m.in MTG355_model_TAG1_GSD35cm_width50m.in
/Volumes/Data1/spc-test/
/Volumes/Data1/spc-test/F6-evaluation
Populate Evaluation Directory
Generate Model Images