Transformations on Pixel Values

 
FIT/FLAT_SKY				 Correct an image for sky variations

ITF/IMAGE				 Transform pixel values in an image

MODIFY/CURSOR				 Change pixel values in image by cursor

MODIFY/GCURSOR				 Change pixel values in image by graphic cursor

MODIFY/PIXEL				 Change pixel values in image

REPLACE/IMAGE 				 Modify pixel values in given intensity interval

REPLACE/POLYGON 			 Replace pixel values inside a polygon