func (self *Mask) FromString(line string) {
tks := strings.Split(line, "\t")
self.Label = tks[0]
width, _ := strconv.Atoi(tks[1])
height, _ := strconv.Atoi(tks[2])
self.Img = cv.NewBinaryImage(width, height)
for i := 3; i < len(tks); i++ {
kv := strings.Split(tks[i], ":")
x, _ := strconv.Atoi(kv[0])
y, _ := strconv.Atoi(kv[1])
self.Img.Open(x, y)
}
}
func (self *FastCutBasedPredictor) CutMatrixByRect(img *cv.BinaryImage, left, top, right, bottom int) *cv.BinaryImage {
if right <= left || bottom <= top {
return nil
}
ret := cv.NewBinaryImage(right-left, bottom-top)
for x := left; x < right && x < img.Width; x++ {
for y := top; y < bottom && y < img.Height; y++ {
if img.IsOpen(x, y) {
ret.Open(x-left, y-top)
}
}
}
return ret
}