Basic Image Manipulation.

• scale - change normalisation of TOS to 0-IP(scale) default 255.0 Intended for re-scaling greylevel values to avoid truncation before forcing a particular image storage representation (eg: char) using the type selection bar.
• yrat - change vertical aspect ratio of TOS by IP(const) using linear interpolation. Intended for image decimation (ie: const < 1.0). A value of const = 0.5 corresponds to simple averaging. Data values at origional lattice sites are unaffected.
• xrat - change horizontal aspect ratio of TOS by IP(const) using linear interpolation. Other comments as yrat.
• smpl - resample TOS by factor IP(const) using quadratic interpolation. A quadratic 3x3 patch is used to determine the best fit parameters to a 2D quadratic approximation to the local image data when computing sub-pixel locations. Data values at origional lattice sites are unaffected. Intended for image expansion (ie: IP(const) > 1.0 ).
• shift - shift the co-ordinates of TOS by IP(sx,sy). Intended for manipulating images which require specific co-ordinate relationships (eg: stereo images).
• bshift - barrel shift TOS by IP(sx,sy). Intended for fft based algorithms which may produce unwanted barrel shifts which need to be corrected.