Information processing method, information processing device, and recording medium
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsRisako TSUJIMURA, Takahiro KAMAI
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Abstract
An information processing method is to be executed by a computer. The method includes acquiring information indicating a first reflected wave of ultrasound acquired by emitting the ultrasound into a space, calculating a feature based on a difference between a first signal and a second signal, the first signal being based on the reflected wave, the second signal being based on information indicating a second reflected wave acquired at a past time before the first reflected wave, and determining whether a person is present or absent in the space in accordance with the calculated feature.
Claims19
An information processing method that is executed by a computer, the information processing method comprising:
- acquiring information indicating a first reflected wave acquired by emitting ultrasound into a space;
- calculating a feature based on a difference between a first signal and a second signal, the first signal being based on the first reflected wave, the second signal being based on information indicating a second reflected wave acquired at a past time before the first reflected wave;
- and
- determining whether a person is present or absent in the space in accordance with the feature calculated.
An information processing device comprising:
- an acquirer that acquires information indicating a first reflected wave of ultrasound, the first reflected wave being acquired by emitting the ultrasound into a space;
- a calculator that calculates a feature based on a difference between a first signal and a second signal, the first signal being based on the first reflected wave, the second signal being based on information indicating a second reflected wave acquired at a past time before the first reflected wave;
- and
- a determiner that determines, based on the feature calculated, whether a person is present or absent in the space.
Dependencies are inferred from the claim text.