ILOG-Takes the logarithm of an image

Description:

ILOG takes the base 10 log of each pixel in an image. Negative pixels are set to zero in the output image.

Parameters:

IMAGE

The datafile to be processed.

OUTPUT

The name of the resulting image. If this is the same as IMAGE (the default) the operation will be performed in situ. Otherwise a new image will be created.

See also:

FIGARO: IALOG.
KAPPA: LOG10, LOGAR, LOGE.

Source comments:

 I L O G

 Takes the base 10 log of an image.  Any pixels that are
 negative will give a zero pixel in the resulting image.

 Command parameters -

 IMAGE  The name of the structure containing the image.

 OUTPUT The name of the result of the operation.  This can
        be the same as for IMAGE.  If not, a new structure
        is created, with everything but the data a direct
        copy of the input.

 Command keywords  - None

 User variables used - None
                                  KS / CIT 22nd April 1984