curvatureBC

Estimatates curvature using a binomial convolver.

Usage: curvatureBC [options] –input <fileName>

Allowed options are :

Positionals:
1 TEXT:FILE REQUIRED                  Input FreemanChain file name
 
Options:
 -h,--help                             Print this help message and exit
 -i,--input TEXT:FILE REQUIRED         Input FreemanChain file name
 --GridStep FLOAT=1                    Grid step

Example:

We consider as input shape the freeman chain of the DGtal/examples/sample directory. The contour can be displayed with displayContours :

$  displayContours  $DGtal/examples/samples/contourS.fc contourS.png  --drawPointOfIndex 0

The curvature can be computed as follows:

$ curvatureBC $DGtal/examples/samples/contourS.fc  > curvatureBC.dat
$ gnuplot 
gnuplot> plot 'curvatureBC.dat' w lines title "curvature with Binomial Convolution estimator"

You should obtain such a result:

contour	curvature
CCW oriented (index 0=blue pt)	resulting curvature

See also

curvatureBC.cpp