Manual Pages for UNIX Operating System command usage for man mlib_ImageAffineTransform

mediaLib Library Functions       mlib_ImageAffineTransform(3MLIB)



NAME
     mlib_ImageAffineTransform  -  affine  transformation  on  an
     image, checking the matrix first

SYNOPSIS
     cc [ flag... ] file... -lmlib [ library... ]
     #include 

     mlib_status mlib_ImageAffineTransform(mlib_image *dst,
          const mlib_image *src, const mlib_d64 *mtx, mlib_filter filter,
          mlib_edge edge);


DESCRIPTION
     The   mlib_ImageAffineTransform()   function   does   affine
     transformation  on  an  image, checking the matrix first and
     taking advantage of special cases.


     The following equation represents the affine transformation:

       xd = a*xs + b*ys + tx
       yd = c*xs + d*ys + ty



     where a point with coordinates (xs, ys) in the source  image
     is mapped to a point with coordinates (xd, yd) in the desti-
     nation image.


     The data type of the  images  can  be  MLIB_BIT,  MLIB_BYTE,
     MLIB_SHORT, MLIB_USHORT, or MLIB_INT.


     The width and height of the destination image  can  be  dif-
     ferent from the width and height of the source image.


     The center of the upper-left corner pixel  of  an  image  is
     located at (0.5, 0.5).

PARAMETERS
     The function takes the following arguments:

     dst       Pointer to destination image.


     src       Pointer to source image.






SunOS 5.11           Last change: 2 Mar 2007                    1






mediaLib Library Functions       mlib_ImageAffineTransform(3MLIB)



     mtx       Transformation  matrix.  mtx[0]  holds  a;  mtx[1]
               holds  b;  mtx[2] holds tx; mtx[3] holds c; mtx[4]
               holds d; mtx[5] holds ty.


     filter    Type of resampling filter. It can be  one  of  the
               following:

                 MLIB_NEAREST
                 MLIB_BILINEAR
                 MLIB_BICUBIC
                 MLIB_BICUBIC2



     edge      Type of edge condition. It can be one of the  fol-
               lowing:

                 MLIB_EDGE_DST_NO_WRITE
                 MLIB_EDGE_DST_FILL_ZERO
                 MLIB_EDGE_OP_NEAREST
                 MLIB_EDGE_SRC_EXTEND
                 MLIB_EDGE_SRC_PADDED



RETURN VALUES
     The function returns MLIB_SUCCESS if  successful.  Otherwise
     it returns MLIB_FAILURE.

ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|
    | MT-Level                    | MT-Safe                     |
    |_____________________________|_____________________________|


SEE ALSO
     mlib_ImageAffine(3MLIB),         mlib_ImageAffine_Fp(3MLIB),
     mlib_ImageAffineIndex(3MLIB),
     mlib_ImageAffineTransform_Fp(3MLIB),
     mlib_ImageAffineTransformIndex(3MLIB),
     mlib_ImageSetPaddings(3MLIB), attributes(5)




SunOS 5.11           Last change: 2 Mar 2007                    2