Imports github.com/cnkei/gospline github.com/digisan/go-handy-cv/blob github.com/digisan/gotk/filedir github.com/digisan/gotk/io github.com/digisan/gotk/slice/tf64 github.com/digisan/gotk/slice/ti github.com/digisan/gotk/slice/tu8i github.com/fogleman/gg Standard library imports bytes encoding/json fmt image image/color image/draw image/jpeg image/png log math os sort strings time