AIPS HELP file for TVFIDDLE in 31DEC18
As of Mon Jan 22 7:17:49 2018
TVFIDDLE: Verb enhances B/W or color TV image with zooms
TVCHAN 1.0 16.0 Channel to enhance
TVLEVS 0.0 32768.0 Peak intensity at OFM
Instructions will appear on terminal.
Use: TVFIDDLE allows the user to fiddle with the zoom and enhancement
of the currently displayed TV image. It is simply the
interactive (second) half if the verb TVALL. If button A is
hit, the routine allows alteration of the black and white
transfer function (cursor X sets intercept and Y sets slope).
If A is hit again, the color contour enhancement is performed
(cursor X sets starting point of contours, Y sets width). If
button B is hit, the zoom magnification is incremented and the
cursor position controls the position about which the image is
zoomed. Button C is like Button B except the magnification is
decremented. Hit button D to exit.
TVCHAN......Specifies which channel is to be "fiddled". The channel
must be one of the channels currently turned on.
TVLEVS......Specifies the maximum intensity expected for the sum of
all visible, overlapped images. Usually n x max in one
image which is now 2046. Values < 2046 are made 2046.