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EP-4224410-B1 - INFORMATION PROCESSING DEVICE, LIVING BODY DETECTION SYSTEM, LIVING BODY DETECTION METHOD, AND RECORDING MEDIUM

EP4224410B1EP 4224410 B1EP4224410 B1EP 4224410B1EP-4224410-B1

Inventors

  • KAWABE, Tomoyuki

Dates

Publication Date
20260506
Application Date
20200930

Claims (17)

  1. A living body detection apparatus comprising: object temperature change measuring means for measuring a temperature change of a surface temperature of an object; living body determination means for determining whether or not the object is a living body based on the temperature change; visible image acquisition means for acquiring a visible image including the object taken by a visible light camera; thermal image acquisition means for acquiring a thermal image including the object taken by a thermal camera; and an object detection means for detecting the object in the visible image; wherein the object temperature change measuring means measures the temperature change of the object detected based on the thermal image.
  2. The living body detection apparatus according to Claim 1, further comprising: part detection means for detecting at least one part in the object detected by the object detection means; wherein the object temperature change measuring means measures the temperature change of the part based on the thermal image, the living body determination means determines whether or not the object is a living body based on the temperature change of the part.
  3. The living body detection apparatus according to Claim 2, wherein the part includes a first part that is relatively likely to change temperature and a second part that is relatively unlikely to change temperature, the object temperature change measuring means measures the temperature change of the first part and the temperature change of the second part based on the thermal image, the living body detection apparatus further comprises: comparison means for comparing a temperature change of the first part with a temperature change of the second part; wherein the living body determination means determines whether or not the object is a living body based on the comparison result of the comparison means.
  4. The living body detection apparatus according to any one of Claims 1 to 2, further comprising: temperature return determination means for determining whether or not the object surface temperature has returned to the original surface temperature before the change; wherein the living body determination means determines whether or not the object is a living body based on the determination result of the temperature return determination means.
  5. The living body detection apparatus according to any one of Claims 1 to 2, further comprising: comparison means for comparing a change pattern of a surface temperature of the object with a change pattern of a surface temperature of a reference person; wherein the living body determination means determines whether or not the object is a living body based on the comparison result of the comparison means.
  6. The living body detection apparatus according to any one of Claims 1 to 5, further comprising: temperature control means for controlling a surface temperature change means that changes a surface temperature of the object.
  7. The living body detection apparatus according to Claim 6, wherein the surface temperature change means is a wind blowing means for blowing wind of a predetermined temperature to the object.
  8. The living body detection apparatus according to Claim 7, further comprising: notification control means for causing notification means to notify that a wind will blow from now on before the wind blowing means blows the wind to the object.
  9. The living body detection apparatus according to Claim 6, wherein the surface temperature change means is a room temperature adjusting apparatus installed in a space isolated from outside.
  10. The living body detection apparatus according to any one of Claims 1 to 9, wherein the living body determination means determines whether or not the object is a living body, considering a result of comparison between a change pattern of a surface temperature of the object and a change pattern of a surface temperature of a reference non-person.
  11. The living body detection apparatus according to any one of Claims 7 to 8, wherein the living body determination means determines whether or not the object is a living body, considering a reaction of the object when the wind blowing means blows the wind to the object.
  12. The living body detection apparatus according to any one of Claims 1 to 9, wherein the living body determination means determines whether or not the object is a living body, considering a surface condition of the object before and after changing a surface temperature.
  13. The living body detection apparatus according to any one of Claims 1 to 9, wherein the living body determination means determines whether or not the object is a living body, considering a temperature change in a background of the object.
  14. The living body detection apparatus according to any one of Claims 1 to 5, further comprising: notification control means for causing notification means to notify a content that encourages actions to change the object's body temperature before the object temperature change measuring means measures a temperature change of a surface temperature of the object.
  15. The living body detection apparatus according to any one of Claims 1 to 14, further comprising: authentication control means for causing the authentication apparatus performing the face authentication to perform the face authentication of the object; wherein the authentication control means causes the authentication apparatus to perform the face authentication of the object after the living body determination means determines that the object is a living body, the living body detection apparatus further comprises: notification means for notifying to that effect when the living body determination means determines that the object is not a living body.
  16. A living body detection method comprising: object temperature change measuring step measuring a temperature change of a surface temperature of an object, living body determination step determining whether or not the object is a living body based on the temperature change, visible image acquisition step acquiring a visible image including the object taken by a visible light camera, thermal image acquisition step acquiring a thermal image including the object taken by a thermal camera, and an object detection step detecting the object in the visible image; wherein the object temperature change measuring step measures the temperature change of the object detected based on the thermal image.
  17. A program for causing an electronic device to execute the following steps of: object temperature change measuring step measuring a temperature change of a surface temperature of an object, living body determination step determining whether or not the object is a living body based on the temperature change, visible image acquisition step acquiring a visible image including the object taken by a visible light camera, thermal image acquisition step acquiring a thermal image including the object taken by a thermal camera, and an object detection step detecting the object in the visible image; wherein the object temperature change measuring step measures the temperature change of the object detected based on the thermal image.

Description

Technical Field The present disclosure relates to an information processing apparatus, a living body detection system, a living body detection method, and a recording media. Background Art For example, Patent Literature 1 discloses a living body determination apparatus configured to determine whether an object is a living body, based on the feature values obtained from a first image taken by irradiating the object with light in a first wavelength range and the feature values obtained from a second image taken by irradiating the object with light in a second wavelength range. Patent Literature 2 discloses an information processing apparatus with a neural network to infer the position of a living body and a temperature change of the living body based on input from an infrared sensor. Citation List Patent Literature Patent Literature 1: Japanese Unexamined Patent Application Publication No. 2017-191374Patent Literature 2: JP6742554B1 Summary of Invention Technical Problem This disclosure is intended to improve upon the techniques disclosed in the prior art documents described above. Solution to Problem An information processing apparatus according to a first aspect of this disclosure includes: object temperature change measuring means for measuring a temperature change of a surface temperature of an object, and living body determination means for determining whether or not the object is a living body based on the temperature change. A living body detection system according to a second aspect of this disclosure includes: object temperature change measuring means for measuring a temperature change of a surface temperature of an object, and living body determination means for determining whether or not the object is a living body based on the temperature change. A living body detection method according to a third aspect of this disclosure includes: object temperature change measuring step measuring a temperature change of a surface temperature of an object, and living body determination step determining whether or not the object is a living body based on the temperature change. A recording media according to a fourth aspect of this disclosure is a non-transitory computer readable medium storing a program for causing an electronic device to execute the following steps of: object temperature change measuring step measuring a temperature change of a surface temperature of an object, and living body determination step determining whether or not the object is a living body based on the temperature change. Brief Description of Drawings Fig. 1 is a schematic diagram of the living body detection apparatus 10;Fig. 2 is a flowchart of one example of an operation of the living body detection apparatus 10;Fig. 3 is a block diagram showing the configuration of the living body detection system 1 according to the second embodiment;Fig. 4 is a schematic diagram of the living body detection apparatus 10;Fig. 5 shows an example of thermal images 11-13;Fig. 6 shows an example of the contents notified by the notification means 50;Fig. 7 is a flowchart of one example of the operation of the living body detection apparatus 10;Fig. 8 is an example of a visible image I containing the face of the object Ob;Fig. 9 is a flowchart of a specific example 1 of the living body determination processing;Fig. 10 is a flowchart of specific example 2 of the living body determination processing;Fig. 11 is a flowchart of specific example 3 of the living body determination processing;Fig. 12 shows an example of a temperature change pattern unique to a living body;Fig. 13 is a flowchart of specific example 4 of living body determination processing;Fig. 14 is a block diagram showing the configuration of the living body detection system 1A according to the third embodiment;Fig. 15 shows an example of a circle gate 80;Fig. 16 is a block diagram showing the configuration of the living body detection apparatus 10 according to the third embodiment;Fig. 17 is a flowchart of one example of the operation of the living body detection apparatus 10 according to the third embodiment;Fig. 18 shows another example of the contents notified by the notification means 50;Fig. 19 is a block diagram showing the configuration of the living body detection system 1B according to the fourth embodiment;Fig. 20 is a block diagram showing the configuration of the living body detection apparatus 10 according to the fourth embodiment;Fig. 21 is a flowchart of one example of the operation of the living body detection apparatus 10 according to the fourth embodiment;Fig. 22 is a schematic configuration diagram of a variation of the wind blowing means 40;Fig. 23 is a flowchart of an example of the reaction determination processing;Fig. 24 is a block diagram showing the configuration of the living body detection system 1C according to the fifth embodiment;Fig. 25 is a block diagram showing the configuration of the living body detection apparatus 10 according to the fifth embodiment;Fig.