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).

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:

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

Populate Evaluation Directory

The F6 evaluation directory is here:

cd /Volumes/Data1/spc-test/F6-evaluation/

drwxrwxr-x  173 dlambert  OREX\spc  5882 Jul 20 16:06 DIRTYNOMINALS
drwxrwxr-x  173 dlambert  OREX\spc  5882 Jul 20 16:05 DIRTYSUMFILES
drwxrwxr-x  172 dlambert  OREX\spc  5848 Jul 20 16:17 SUMFILES
drwxr-xr-x   14 jweirich  OREX\spc   476 Jul 21 09:29 eval_F6_BBD1_TG
drwxrwxr-x   14 dlambert  OREX\spc   476 Jul 20 16:36 eval_F6_start
-rw-r--r--    1 dlambert  OREX\spc   117 Jul 20 16:21 listSUM_120cm
-rw-r--r--    1 dlambert  OREX\spc   117 Jul 20 16:22 listSUM_18cm
-rw-r--r--    1 dlambert  OREX\spc   117 Jul 20 16:21 listSUM_35cm
-rw-r--r--    1 dlambert  OREX\spc   117 Jul 20 16:22 listSUM_5cm
-rw-r--r--    1 dlambert  OREX\spc   117 Jul 20 16:21 listSUM_75cm
-rw-r--r--    1 dlambert  OREX\spc   117 Jul 20 16:22 listSUM_9cm
drwxrwxr-x    4 dlambert  OREX\spc   136 Jun 24 16:16 lsupport
-rw-rw-r--    1 dlambert  OREX\spc  1927 Jun 23 15:12 processing.log
lrwxr-xr-x    1 dlambert  OREX\spc    30 Jun 24 12:27 support -> /opt/local/spc/shape4/support4
lrwxr-xr-x    1 dlambert  OREX\spc    39 Jun 24 16:54 truth_PGMFILES -> /opt/local/spc/shape4/imageGen/PGMFILES

Make a subdirectory, e.g.

mkdir eval_F6_start

Populate the directory as follows:

• MAPFILES/ - directory containing model bigmap/s;
• MAPLIST.TXT - file listing the bigmap to image, appended with 'END';
• PGMFILES/ - directory for storage of generated .pgm files;

• SUMFILES -> ../SUMFILES - symbolic link to main directory dirty sumfiles;

• THUMBNAILS/ - directory for storage of generated .jpg files;
• imageXcorr_results/ - directory for storage of imXcor.py output files;

• truth_PGMFILES -> /opt/local/spc/shape4/imageGen/PGMFILES/ - symbolic link to truth images.

Generate Model Images

Conduct Normalized Cross-Correlation