Samaple Batch Listing

Sample Batch Listing

This is a sample batch listing that runs under the VICAR image processing system developed at Jet Propulsion Laboratory over the past thirty years. Following the listing is a line-by-line explaination.

 1.   procedure
 2.
 3.   body
 4.
 5.   ! Victoria Harbor, Hong Kong compressed SPOT image
 6.
 7.   label-cre vicr.raw viccir0.r nl=844 ns=700 'byte
 8.   label-cre vicg.raw viccir0.g nl=844 ns=700 'byte
 9.   label-cre vicb.raw viccir0.b nl=844 ns=700 'byte
10.   dcl copy viccir0.g vicnat0.red
11.   f2 (viccir0.b viccir0.r) vicnat0.gre func="(in1*0.75)+(in2*0.25)"
12.   f2 (viccir0.b viccir0.r) vicnat0.blu func="(in1*0.75)-(in2*0.25)"
13.   vtiff-fromvic (vicnat0.red vicnat0.gre vicnat0.blu) vicnat0.tif
14.
15.   end-proc

Lines 1, 3, and 15 are required lines in a VICAR batch job.
Line 5 is a comment.
Lines 7, 8, and 9 create a VICAR label on each of the three input images, (red, green, and blue). The parameters indicate the number of lines, number of samples, and number of bits per pixel.
Line 13 converts a red, green, and blue VICAR image into TIFF format.
Line 10 copies the green input image to the red output image.
Line 11 performs image math on the blue and red input image to produce the green output image. This step takes 75% of the blue input pixel value and adds to it 25% if the red input pixel value.
Line 12 also performs image math on the on the blue and red input image to produce the blue output image. This step takes 75% of the blue input pixel value and subtracts 25% of the red input image pixel value.