Privacy-conscious detection of roll-over based on thermography measurement

Because of the accident of falling out of the bed of inpatients / recipients of care occurs constantly in nursing /care facilities, the technique of roll-over detection / posture state estimation are required. In this paper, we developed the detection technique of roll-over with the thermographic watching system with the respect of a person´s privacy The detection of roll-over is the method which finds out the errant characteristic value of the thermography. By using the Higher-order Local Auto-Correlation (HLAC) as the characteristic value, several of rollover and awaking was detected.