Decoding apparatus, decoding method, and program
A tactile reproduction system is made more efficient by achieving a data amount reduction of a tactile signal while ensuring reproducibility of a tactile sense. A decoding apparatus according to the present technology includes a decoding unit configured to decode tactile coded data obtained by performing encoding of compressing an information amount, on a tactile signal using higher-order perception in a tactile sense. Therefore, a data amount reduction of a tactile signal can be performed in accordance with a tactile characteristic of a human.
1. A decoding apparatus comprising:
a decoding unit including processing circuitry configured to decode tactile coded data obtained by performing encoding of compressing an information amount, on a tactile signal using higher-order perception in a tactile sense, wherein compressing the information amount of the tactile signal is based on a determined higher-order perception applied threshold value indicative of a level of phantom sensation felt by a user and/or a level of apparent movement felt by the user.
2. The decoding apparatus according to claim 1 ,
wherein the processing circuitry is configured to decode the tactile coded data having been subjected to encoding of compressing an information amount using phantom sensation.
3. The decoding apparatus according to claim 2 ,
wherein the tactile coded data includes usage channel designation information for designating a usage channel from among three or more channels of tactile signals, and
the processing circuitry is configured to output a tactile signal of a channel indicated by the usage channel designation information.
4. The decoding apparatus according to claim 1 ,
wherein the processing circuitry is configured to decode the tactile coded data having been subjected to encoding of compressing an information amount using an apparent movement.
5. The decoding apparatus according to claim 4 ,
wherein the tactile coded data includes usage presence/absence information indicating usage presence/absence of an apparent movement, and
the processing circuitry is configured to decode the tactile coded data on a basis of the usage presence/absence information.
6. The decoding apparatus according to claim 5 ,
wherein the tactile coded data includes a tactile signal of only a single channel among usable channels being channels of tactile signals that can use an apparent movement, and output control information indicating an output channel and an output timing of the tactile signal, and
the processing circuitry is configured to output the tactile signal of the single channel in accordance with the output control information.
7. The decoding apparatus according to claim 6 ,
wherein the single channel is a channel with an earliest signal rising timing among signals of the usable channels.
8. The decoding apparatus according to claim 1 ,
wherein the processing circuitry is configured to decode the tactile coded data in which a size of a block indicating a processing unit in a time direction is made variable.
9. The decoding apparatus according to claim 1 ,
wherein the tactile signal is a signal that is based on a detection signal of a tactile sensor.
10. The decoding apparatus according to claim 1 ,
wherein the tactile signal is a signal that is based on a voice signal.
11. A decoding method executed by processing circuitry, the method comprising:
decoding tactile coded data obtained by performing encoding of compressing an information amount, on a tactile signal using higher-order perception in a tactile sense, wherein compressing the information amount of the tactile signal is based on a determined higher-order perception applied threshold value indicative of a level of phantom sensation felt by a user and/or a level of apparent movement felt by the user.
12. A non-transitory computer readable medium storing instructions that, when executed by processing circuitry, perform a decoding method comprising:
decoding tactile coded data obtained by performing encoding of compressing an information amount, on a tactile signal using higher-order perception in a tactile sense, wherein compressing the information amount of the tactile signal is based on a determined higher-order perception applied threshold value indicative of a level of phantom sensation felt by a user and/or a level of apparent movement felt by the user.