next up previous contents index
Next: llmap Up: Reference Previous: ll_distance   Contents   Index

ll_extract

$ \bigcirc$Name


ll_extract Compute the level lines of a Fimage




$ \bigcirc$Command Synopsis


ll_extract [-l levels] [-o offset] [-s step] [-p prec] [-a area] [-t tree] [-z] in out



-l levels : levels of quantization (Fsignal) (bilinear)

-o offset : quantization offset (bilinear, default 0.5)

-s step : quantization step (bilinear, default 1.0)

-p prec : precision (# pts per unit length), default 5 (bilinear)

-a area : minimum area (parameter for the grain filter)

-t tree : to use a previoulsy computed tree

-z : use zero order instead of bilinear interpolation

in : input Fimage

out : computed level lines (output Flists)




$ \bigcirc$Function Summary


Flists ll_extract (in , levels , offset , step , prec , area , tree , z )

Fimage in ;

Fsignal levels ;

float *offset , *step ;

int *area , *prec ;

Shapes tree ;

char *z ;




$ \bigcirc$Description


This module extract level lines from a Fimage.

The resulting fcurves are stored in a Flists. In both cases, the flst tree can be precomputed and passed to the program via the -t option.




$ \bigcirc$See Also


flst, flstb_boundary, flst_bilinear, flst_boundary, flstb_quantize, fsaddles.




$ \bigcirc$Version 1.2


Last Modification date : Mon Dec 24 17:47:02 2001


$ \bigcirc$Author


Lionel Moisan






next up previous contents index
Next: llmap Up: Reference Previous: ll_distance   Contents   Index
mw 2004-05-05