Describe BRT1 here.

FUNCTION BRT1(Z,Z0,KK,DN,ESZ)

Calculates the brightness DN of a pixel in the image using maplet coordinates.

Confidence - 50%

Return value :

Brightness value at a specific point Z

* DOUBLE PRECISION Z(2)

Pixel/Line within the image of the center of the maplet

Passed in

* INTEGER Z0(2)

X and Y within the maplet of the location to sample.

Passed in

* INTEGER KK

Movement rate in image space for each step in maplet space.

Passed in

* INTEGER DN(-1300:1300,-1300:1300)

DN of the image.

Passed in.

* INTEGER ESZ

Size of maplet.

Used to check boundaries

Passed in

categorySubroutine