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Useful to convert (x; y) coordinates to chain-coded coordinates.
pix2chc(coo)chc2pix(chc)
chc2pix(chc)
a matrix or a numeric
(x; y) coordinates passed as a matrix
chain coordinates
Kuhl, F. P., & Giardina, C. R. (1982). Elliptic Fourier features of a closed contour. Computer Graphics and Image Processing, 18(3), 236-258.
chc2pix
Other import functions: import_Conte(), import_StereoMorph_curve1(), import_jpg1(), import_jpg(), import_tps(), import_txt()
import_Conte()
import_StereoMorph_curve1()
import_jpg1()
import_jpg()
import_tps()
import_txt()
pix2chc(shapes[1]) %T>% print %>% # from pix to chc chc2pix() # and back
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