Audio output control device, audio output control method, and program
Attention can be effectively called to an advertisement, and the effect of calling attention can be known. A control device is connected to a super-directional speaker that outputs audio in a specific direction, and a speaker pedestal that adjusts the audio output direction of the super-directional speaker. The control device takes a picture of an area in front of an advertisement display surface by means of a camera, detects a person photographed in the image captured by the imaging unit as a target, adjusts the audio output direction of the super-directional speaker to the direction of the target by means of the speaker pedestal, and causes the super-directional speaker to output audio. After outputting the audio, the control device takes another picture by the camera, and again determines the direction in which the face of the target is looking based on this picture.
1. An audio output control device that is connected to a directional speaker that outputs audio in a specific direction, and an audio output direction adjustment mechanism that adjusts the audio output direction of the directional speaker, the audio output control device comprising:
an imaging unit that images a specific range from an advertisement display surface;
a target detection unit that detects a person photographed in the image captured by the imaging unit as a target;
an audio output control unit that causes the audio output direction adjustment mechanism to direct the audio output direction of the directional speaker toward the target detected by the target detection unit, and causes the directional speaker to output audio; and
an orientation detection unit that determines the orientation of the face of the target based on an image captured by the imaging unit after the directional speaker outputs audio as controlled by the audio output control unit.
2. The audio output control device described in claim 1 , further comprising:
an attention time detection unit that determines the time the face of the target was facing toward the advertisement display surface after the orientation detection unit determines the face of the target is facing the advertisement display surface.
3. The audio output control device described in claim 1 , wherein:
the audio output control unit selects from among people in the image captured by the imaging unit a person whose face is not facing the advertisement display surface as the target.
4. The audio output control device described in claims 1 , wherein:
the imaging unit images a specific range from the display surface of a display device that displays an advertising image as the advertisement display surface; and
the audio output control unit outputs audio related to the advertising image displayed by the display device.
5. An audio output control method for an audio output control device that is connected to a directional speaker that outputs audio in a specific direction, and an audio output direction adjustment mechanism that adjusts the audio output direction of the directional speaker, the audio output control method comprising steps of:
imaging an area in front of an advertisement display surface;
detecting a person photographed in the captured image as a target;
causing the audio output direction adjustment mechanism to direct the audio output direction of the directional speaker toward the target, and causing the directional speaker to output audio; and
capturing another image after the directional speaker outputs audio and determining the orientation of the face of the target based on this captured image.
6. The audio output control method described in claim 5 , further comprising a step of:
determining the time the face of the target was facing toward the advertisement display surface after the orientation detection unit determines the face of the target is facing the advertisement display surface.
7. The audio output control method described in claim 5 , wherein:
a person whose face is not facing the advertisement display surface is selected as the target from among the people in the captured image.
8. The audio output control method described in claim 5 , further comprising steps of:
imaging a specific range from the display surface of a display device that displays an advertising image as the advertisement display surface; and
outputting audio related to the advertising image displayed by the display device.
9. A non-transitory computer readable medium having stored thereon a program that is executed by a computer connected to a directional speaker that outputs audio in a specific direction, and an audio output direction adjustment mechanism that adjusts the audio output direction of the directional speaker, the program when executed causing the computer to perform a method comprising:
imaging a specific range from an advertisement display surface;
detecting a person photographed in the captured image as a target;
causing the audio output direction adjustment mechanism to direct the audio output direction of the directional speaker toward the detected target and causing the directional speaker to output audio; and
determining the orientation of the face of the target based on another captured image after the directional speaker outputs the audio.
10. The audio output control device described in claim 1 , wherein the audio output control unit causing the audio output direction adjustment mechanism to direct the audio output direction of the directional speaker toward the target detected by the target detection unit comprises causing the audio output direction adjustment mechanism to move relative to the advertisement display surface.
11. The audio output control device described in claim 10 , wherein:
the advertisement display surface has a left side and a right side; and
causing the audio output direction adjustment mechanism to move relative to the advertisement display surface comprises rotating the audio output direction adjustment mechanism relative to the advertisement display surface in at least one of a left direction, a right direction, an up direction, and a down direction.
12. The audio output control device described in claim 1 , wherein the directional speaker is mounted on the audio output direction adjustment mechanism.
13. The audio output control device described in claim 1 , wherein:
when the orientation of the face of the target determined by the orientation detection unit indicates that the target is looking at the advertisement display surface, an attention time detection unit determines the time the face of the target was facing toward the advertisement display surface; and
when the orientation of the face of the target determined by the orientation detection unit indicates that the target is not looking at the advertisement display surface, the audio output control unit selects one of a plurality of predetermined audio, causes the audio output direction adjustment mechanism to direct the audio output direction of the directional speaker toward the target, and causes the directional speaker to output the selected predetermined audio.
14. The audio output control device described in claim 1 , wherein:
when the orientation of the face of the target determined by the orientation detection unit indicates that the target is not looking at the advertisement display surface, an attention time detection unit determines the time the face of the target was facing toward the advertisement display surface; and
when the orientation of the face of the target determined by the orientation detection unit indicates that the target is looking at the advertisement display surface, the attention time detection unit does not determine the time the face of the target was facing toward the advertisement display surface.