MMACH (lmmach) functions


LIBRARY ROUTINE

lvsmoothseg - Do the smooth segmentation, with an operation gating mask.

LIBRARY CALL

int
lvsmooth(xvimage *img1, xvimage *img2, mat_str *b1, mat_str *b2, mat_str *b3, xvimage *img3, int mflg, unsigned long border, xvimage *img4)

INPUT

none

OUTPUT

none

RETURN VALUE

TRUE (1) on success, FALSE (0) on failure

DESCRIPTION

lvsmooth will do the smooth segmentation by a set of structuring elements. img1, b1, b2 and b3 are, respectively, the input image and the structuring elements; img2 is the conditional image, img3 is the gating image, and mflg should be set to 1 if the gating image is to be used. img4 is the output image. A non-zero mask pixel in img3 enables the output pixel to contain the conditional skeleton by thinning. A zero mask pixel in img3 just transfers the value of the corresponding pixel in img1 to the output pixel.

The input and mask images must be of the same size, data type, and have the same number of data bands.

ADDITIONAL INFORMATION

none

EXAMPLES

none

SIDE EFFECTS

none

RESTRICTIONS

lvsmooth can be defined for all data types supported by Khoros, but at the moment it has been implemented just for the bit and unsigned char types. The structuring elements are subsets of the 3x3 matrix and the origin is always at the center of this matrix.

Due to the simultaneous processing of 32 pixels in BIT images, input images of the BIT data type must be converted to a special data structure before the library is called. This can be accomplished by using the format routine. After the library call, the unformat routine can convert the image back to the BIT data type.

MODIFICATION

none

FILES

$MMACH/objects/library/lmmach/src/lvsmoothseg.c

SEE ALSO

lmmach(3)

COPYRIGHT

Copyright (C) 1993-1997 Junior Barrera, Roberto Lotufo. All rights reserved.