MMACH (lmmach) functions


LIBRARY ROUTINE

lvnclose - N successive closings by the same structuring element.

LIBRARY CALL

int
lvnkclose(xvimage *img1, mat_str *b, int n, xvimage *img2, int mflg, unsigned long border, xvimage *img3)

INPUT

none

OUTPUT

none

RETURN VALUE

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

DESCRIPTION

vnclose will do n successive closings by the same structuring element. img1 is the input image; b is the structuring element; N is the number of closings performed; 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

lvnclose 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/lvnclose.c

SEE ALSO

lmmach(3)

COPYRIGHT

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