def reset_meters(self):
    for (key, meter) in self.meters.items():
        meter.reset()
    self.roi_cm.reset()
    self.rpn_cm.reset()
def reset_meters(self):
    for (key, meter) in self.meters.items():
        meter.reset()
    self.roi_cm.reset()
    self.rpn_cm.reset()