mlib_imageconvmxnindex(3mlib) [sunos man page]

mlib_ImageConvMxNIndex(3MLIB)				    mediaLib Library Functions				     mlib_ImageConvMxNIndex(3MLIB)

NAME

       mlib_ImageConvMxNIndex - MxN convolution on a color indexed image

SYNOPSIS

       cc [ flag... ] file... -lmlib [ library... ]
       #include <mlib.h>

       mlib_status  mlib_ImageConvMxNIndex(mlib_image  *dst,  const  mlib_image *src, const mlib_s32 *kernel, mlib_s32 m, mlib_s32 n, mlib_s32 dm,
       mlib_s32 dn, mlib_s32 scale, mlib_edge edge, const void *colormap);

DESCRIPTION

       The mlib_ImageConvMxNIndex() function performs a MxN convolution on the color indexed source image by using the user-supplied kernel.

       The input and output images must have the same image type and size.

       For this convolution, the key element of the convolution kernel is located at (dm, dn) of the kernel matrix.

       This function performs the convolution on a color indexed image. The input image and the output image must be  single-channel  images.  The
       image type must be MLIB_BYTE or MLIB_SHORT.

       It uses the following equation:

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

       where m > 1, n > 1, 0 <= dm < m, 0 <= dn < n.

PARAMETERS

       The function takes the following arguments:

       dst	       Pointer to destination image.

       src	       Pointer to source image.

       kernel	       Pointer to the convolution kernel, in row major order.

       m	       Width of the convolution kernel.  m > 1.

       n	       Height of the convolution kernel.  n > 1.

       dm	       X coordinate of the key element in the convolution kernel.  0 <= dm < m.

       dn	       Y coordinate of the key element in the convolution kernel.  0 <= dn < n.

       scale	       Scaling factor.

       edge	       Type of edge condition. It can be one of the following:

		       MLIB_EDGE_DST_NO_WRITE
		       MLIB_EDGE_DST_FILL_ZERO
		       MLIB_EDGE_DST_COPY_SRC
		       MLIB_EDGE_SRC_EXTEND

       colormap        Internal data structure for inverse color mapping.  This data structure is generated by the mlib_ImageColorTrue2IndexInit()
		       function.

RETURN VALUES

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

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mlib_ImageConv2x2(3MLIB),     mlib_ImageConv2x2_Fp(3MLIB),     mlib_ImageConv2x2Index(3MLIB),	 mlib_ImageConv3x3(3MLIB),     mlib_Image-
       Conv3x3_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_Image-
       Conv7x7_Fp(3MLIB),     mlib_ImageConv7x7Index(3MLIB),	mlib_ImageConvKernelConvert(3MLIB),    mlib_ImageConvMxN(3MLIB),    mlib_ImageCon-
       vMxN_Fp(3MLIB),	mlib_ImageConvolveMxN(3MLIB),  mlib_ImageConvolveMxN_Fp(3MLIB),  mlib_ImageSConv3x3(3MLIB),  mlib_ImageSConv3x3_Fp(3MLIB),
       mlib_ImageSConv5x5(3MLIB), mlib_ImageSConv5x5_Fp(3MLIB), mlib_ImageSConv7x7(3MLIB), mlib_ImageSConv7x7_Fp(3MLIB), mlib_ImageSConvKernelCon-
       vert(3MLIB), attributes(5)

SunOS 5.10							    10 Nov 2004 				     mlib_ImageConvMxNIndex(3MLIB)