def from_string(line):
label, h, w, vals = line.split("||")
seg_image = np.zeros((int(h) * int(w)), dtype=np.bool)
for i in range(len(vals)):
seg_image[i] = int(vals[i])
seg_image = seg_image.reshape((int(h), int(w)))
if label == "?":
label = None
seg = SpeedSegment(seg_image, label=label)
return seg
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