vwarp - geometric transformation with two possible interpolation methods

vwarp [-H] [if=<inputfile>] [of=<outputfile>] [mf=<value>] [it=<value>] [-d]

Vwarp generates an output file with the same dimension as the specified for the map file created from vwmap. The value of each output pixel is found by using the map file, which specifies from which input pixel the output pixel was mapped from (backwards mapping).

if=

is the input VisionX image (byte format).

of=

is the warped image output.

mf=

is a two-channel float image where the first channel corresponds to the x-coordinates and the second channel contains the y-coordinates. Because the map file contains float values, it is necessary to use some method of interpolation.

it=

specifies the interpolation method as (0) nearest-neighbor interpolation or (1) bilinear interpolation. Default is 0.

*

Only works on 2d byte images

vwcoefs(1), vwmap(1)

Amy Sun, 1998