hicubenorm

This program was created by adding the HiRise specific code from Eric Eliason's Cubenorm_Filter script to the cubenorm program. Statistics are first acquired from an input cube or from a PVL file or table that was previously generated by the cubenorm program.

A combination lowpass/highpass filter is run on the columnar averages and median values for the input cube. The filter used to do the lowpass filtering is a one dimensional filter whose long dimension is an odd positive value greater than one.

There is an option to create a normalized output cube by applying either a multiplicative or subtractive correction to the data of the input cube. The normalization is performed using the updated statistics that have been filtered. The columnar averages or medians can be chosen as the normalizer. Each pixel is normalized by subtracting the normalization factor or by multiplying by the normalization factor.

There is an option NEW_VERSION which uses the updated logic for correcting Average and Median columns of the cubenorm stats. Similar processing is done individually for the Average and Median columns with combination of high and low pass filters. The left and right edges are problamatic and are cut out at the pause points. There are changes in the number of samples to be NULLed on left/right edge of the image depending on the Channel in the newer version. These samples are Nulled to avoid filter ringing.

For binning mode equal to 1, the number of iterations running lowpass filter is increased to 50 from the original 10. The highpass filter performs by checking for MaxValid pixels and filters by either divide or subtract option depending on the user specified MODE while earlier it was only subtraction. The highpass filter also Marks the samples with missing pixels (less than MaxValid Pixels) due to a problem with furrows or noise. The output of the highpass filter is checked for Markers and set to 1/0(Divide/Subtract) depending on the previous sample value. The direction left/right is based on the Channel.

Description

Use this parameter to select input HiRise file

Type	cube
File Mode	input
Filter	*.cub

Description

Output file with input columns divided by the column average

Type	cube
File Mode	output
Pixel Type	real
Internal Default	No Output file will be created

Description

Statistical output of each column (band #, column #, valid pixels, average, median, std, min, max)

Type	filename
File Mode	output
Internal Default	No Output file will be created

Description

This option is used to correct average and median Stats from cubenorm application for the hiproc pipeline using latest version 1.9 2009/12/22 18:48:39 of Eric Eliason's hical pipeline

Type	boolean
Default	FALSE

Description

Specify the format type of the statistics file, either use tabular or PVL style format.

Type	string
Default	TABLE
Option List:	Option Brief Description TABLE Create TABLE output Statistics data to be generated in tabluar form, each sample column is placed in a row in the tabluar output. PVL Create PVL output Statistics data to be in PVL (Parameter Value Language) format

Description

This option is intended to be used when the statistics come from a source other than the input cube (default). cubenorm initial derives all its statistics from the input cube and applies it as specified by the user in the same run. This works for most conditions but does not works so well with abrupt changes in brightness such as craters or poles.

With this option, it is now possible to have the statistics come a file in a format compatable with the STATS output file. This can be a TABLE or PVL formatted input file. This allows statistics from other cubenorm runs to be used as input statistics source. It also allows intermediate processing on the FROM stats to apply additional smoothing or culling techniques.

Type	string
Default	CUBE
Option List:	Option Brief Description CUBE Statistics are computed from FROM input cube This is the old behavior. The statistics are computed from the input cube as specified by the FROM parameter. They are also applied to the TO file if specifed in the same run. Exclusions FROMSTATS PVL Statistics are provided in FROMSTATS in PVL format This option requires a filename in FROMSTATS with PVL formatted data. This format is the same format as is generated in the STATS output file. TABLE Statistics are provided in FROMSTATS in TABLE format This option requires a filename in FROMSTATS with TABLE formatted data. This format is the same format as is generated in the STATS output file.

Description

This optional file provides the statistics that are applied to the input FROM file. Its format must be TABLE or PVL and consistant with the STATS file output format.

If this option is utilized, the statistics gathering step is bypassed.

Type	filename
File Mode	input
Internal Default	Optional Input Statistics file
Filter	*.txt

Description

This option is used to choose subtract/divide for the highpass filter

Type	string
Default	HIGHPASS_DIVIDE
Option List:	Option Brief Description HIGHPASS_DIVIDE Use Division for highpass filter This option will use division for highpass filter HIGHPASS_SUBTRACT Use Subtraction for highpass filter This option will use subtraction for highpass filter

Description

This is the total number of samples in the boxcar. It must be a positive odd integer.

Type	integer
Default	5
Minimum	3 (inclusive)
Odd	This value must be an odd number

Description

This option is used to exclude the column averages (11 pixels) at the pause points in the image array. This option only applies to images with a bin mode of 1.

Type	boolean
Default	TRUE

Description

This option is used to select if column or line is normalized using its average or median

Type	string
Default	MEDIAN
Option List:	Option Brief Description MEDIAN Use column/line median when normalizing This option will use the median of the column/line when normalizing each column/line AVERAGE Use column/line average when normalizing This option will use the average of the column/line when normalizing each column/line

Description

This option is used to select select how normalization coefficients are applied, either subtracting or dividing by the average or median.

Type	string
Default	DIVIDE
Option List:	Option Brief Description DIVIDE Divide column/row by its median/average This option will divide each column (or row) by its normalizer (median or average). SUBTRACT Subtract median/average from column/row This option will subtract the normalizer (median or average) from each column (or row).

Description

This option is used to preserve the average/median of the input image. If turned off, the output image average of the data will be one (unity) for the DIVIDE mode or zero for the SUBTRACT mode.

Type	boolean
Default	TRUE