XMM-Newton Science Analysis System

imgrad (tools-1.61.1) [xmmsas_20050815_1803-6.5.0]

Meta Index

imgrad

Abstract:

This task approximates the gradient at each pixel of an image by doing least-squares fitting of a plane to the 3x3 array of values centred on each pixel.

Instruments/Modes
Description
Parameters
Errors
Input Files
Output Files
Algorithm
Bibliography
Index

XMM-Newton SOC/SSC -- 2005-08-16