Manual Pages for UNIX Operating System command usage for man mlib_ImageSConv3x3

mediaLib Library Functions              mlib_ImageSConv3x3(3MLIB)



NAME
     mlib_ImageSConv3x3 - separable 3x3 convolution

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

     mlib_status mlib_ImageSConv3x3(mlib_image *dst, const mlib_image *src,
          const mlib_s32 *hkernel, const mlib_s32 *vkernel, mlib_s32 scale,
          mlib_s32 cmask, mlib_edge edge);


DESCRIPTION
     The mlib_ImageSConv3x3() function performs a  separable  3x3
     convolution  on  the source image by using the user-supplied
     kernel.


     It uses the following equation:

                      m-1-dm n-1-dn
       dst[x][y][i] =  SUM    SUM  src[x+p][y+q][i]*h[p]*v[q]*2**(-2*scale)
                      p=-dm  q=-dn



     where m = 3, n = 3, dm = (m - 1)/2 = 1, dn = (n - 1)/2 = 1.

PARAMETERS
     The function takes the following arguments:

     dst        Pointer to destination image.


     src        Pointer to source image.


     hkernel    Pointer to the horizontal kernel.


     vkernel    Pointer to the vertical kernel.


     scale      Scaling factor.


     cmask      Channel mask to indicate the channels to be  con-
                volved, each bit of which represents a channel in
                the image. The channels corresponding to one bits
                are  those  to be processed. For a single-channel
                image, the channel mask is ignored.




SunOS 5.11           Last change: 2 Mar 2007                    1






mediaLib Library Functions              mlib_ImageSConv3x3(3MLIB)



     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_DST_COPY_SRC
                  MLIB_EDGE_SRC_EXTEND



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_ImageConv2x2(3MLIB),       mlib_ImageConv2x2_Fp(3MLIB),
     mlib_ImageConv2x2Index(3MLIB),     mlib_ImageConv3x3(3MLIB),
     mlib_ImageConv3x3_Fp(3MLIB),  mlib_ImageConv3x3Index(3MLIB),
     mlib_ImageConv4x4(3MLIB),       mlib_ImageConv4x4_Fp(3MLIB),
     mlib_ImageConv4x4Index(3MLIB),     mlib_ImageConv5x5(3MLIB),
     mlib_ImageConv5x5_Fp(3MLIB),  mlib_ImageConv5x5Index(3MLIB),
     mlib_ImageConv7x7(3MLIB),       mlib_ImageConv7x7_Fp(3MLIB),
     mlib_ImageConv7x7Index(3MLIB),
     mlib_ImageConvKernelConvert(3MLIB),
     mlib_ImageConvMxN(3MLIB),       mlib_ImageConvMxN_Fp(3MLIB),
     mlib_ImageConvMxNIndex(3MLIB), mlib_ImageConvolveMxN(3MLIB),
     mlib_ImageConvolveMxN_Fp(3MLIB),
     mlib_ImageSConv3x3_Fp(3MLIB),     mlib_ImageSConv5x5(3MLIB),
     mlib_ImageSConv5x5_Fp(3MLIB),     mlib_ImageSConv7x7(3MLIB),
     mlib_ImageSConv7x7_Fp(3MLIB),
     mlib_ImageSConvKernelConvert(3MLIB), attributes(5)









SunOS 5.11           Last change: 2 Mar 2007                    2