Maps texture in I according to row_dest and col_dest.
I has (nrows*ncols) coordinates. Each coordinate has an associated intensity value. A
transformation on I can be defined by giving the destination (r',c') of the intensity
associated with coordinate (r,c) in I -- ie I(r,c). Applying the transformation, we ask
what intensity is associated with a coordinate (r0',c0') by interpolating between the
intensities at the closest coordinates (r',c'). In the function below specify the
destination of (r,c) by (row_dest(r,c), col_dest(r,c)).
If the inverse mapping is also available -- ie if we can go from the coordinates in the
destination to the coordinates in the source, then a much more efficient procedure can
be used to texture_map that involves interp2 instead of griddata. See apply_homography
for example usage in this case.
The bounding box of the image is set by the BBOX argument, a string that can be 'loose'
(default) or 'crop'. When BBOX is 'loose', IR includes the whole transformed image,
which generally is larger than I. When BBOX is 'crop' IR is cropped to include only the
central portion of the transformed image and is the same size as I.
INPUTS
I - 2D input image
row_dest - row_dest(i,j) is row loc where I(i,j) gets mapped to
col_dest - col_dest(i,j) is col loc where I(i,j) gets mapped to
bbox - [optional] see above for meaning of bbox ({'loose'},'crop')
OUTPUTS
IR - result of texture mapping
DATESTAMP
29-Sep-2005 2:00pm
See also APPLY_HOMOGRAPHY