MMACH (lmmach) functions


LIBRARY ROUTINE

lvncondthick - N sucessive cond. thickenings of an image.

LIBRARY CALL

int
lvncthick(xvimage *img1, xvimage *img2, mat_str *b1, mat_str *b2, int n, int r, int d, xvimage *img3, int mflg, unsigned long border, xvimage *img4)

INPUT

none

OUTPUT

none

RETURN VALUE

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

DESCRIPTION

vncthick will do n sucessive cond. thickenings by the same structuring element. img1 is the input image; b1 and b2 are the structuring elements; N is the number of thickenings performed; R is the rotation step, img2 is the gating image; img3 is the output image. mflg is a flag. mflg should be set to 1 if the gating image is to be used. A non-zero mask pixel in img2 enables the output pixel to contain the result. A zero mask pixel in img2 just transfers the value of the corresponding pixel in img1 to the output pixel.

The input image and the optional mask image 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

lvncthick 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.

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/lvncondthick.c

SEE ALSO

lmmach(3)

COPYRIGHT

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