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Menggabungkan pelacakan wajah di aplikasi Anda dengan ARCore untuk Jetpack XR

Setelah pengguna memberikan izin untuk pelacakan wajah, aplikasi Anda dapat mengambil informasi bentuk wajah melalui ARCore untuk Jetpack XR. Informasi bentuk wajah dapat membantu aplikasi Anda menampilkan pengguna di dunia virtual, misalnya, untuk mencoba kacamata virtual.

Membuat sesi ARCore untuk Jetpack XR

Mendapatkan informasi postur kepala melalui sesi ARCore untuk Jetpack XR. Lihat Memahami siklus proses Sesi untuk mendapatkan Session.

Mengonfigurasi sesi

Pelacakan wajah tidak diaktifkan secara default pada sesi XR. Untuk mengaktifkan pelacakan wajah, konfigurasi sesi dan tetapkan mode FaceTrackingMode.USER:

val newConfig = session.config.copy(
    faceTracking = Config.FaceTrackingMode.USER,
)
when (val result = session.configure(newConfig)) {
    is SessionConfigureSuccess -> TODO(/* Success! */)
    is SessionConfigureConfigurationNotSupported ->
        TODO(/* Some combinations of configurations are not valid. Handle this failure case. */)
    else ->
        TODO(/* The session could not be configured. See SessionConfigureResult for possible causes. */)
}FaceTracking.kt

Mengambil data wajah

Gunakan Face.getUserFace(session) untuk mengambil data wajah pengguna, yang berisi hal berikut:

Nilai blendshape wajah: Kemungkinan ekspresi wajah adalah kombinasi dari 68 nilai blend shape. Setiap nilai bentuk campuran mewakili gerakan wajah atau deformasi wajah, dan nilai tersebut menunjukkan intensitasnya, mulai dari 0.0 hingga 1.0. Untuk penjelasan setiap jenis bentuk campuran, lihat Memahami jenis bentuk campuran wajah.
Nilai keyakinan untuk wilayah: Wajah memiliki tiga wilayah. Nilai keyakinan menunjukkan tingkat kepastian akurasi untuk pose yang diberikan, mulai dari 0.0 hingga 1.0, dengan 1.0 menunjukkan keyakinan tertinggi.

val face = Face.getUserFace(session) ?: return
face.state.collect { state ->
    if (state.trackingState != TrackingState.TRACKING) return@collect

    val confidence = state.getConfidence(FaceConfidenceRegion.FACE_CONFIDENCE_REGION_LOWER)
    val blendShapeValue = state.blendShapes[FaceBlendShapeType.FACE_BLEND_SHAPE_TYPE_LIPS_TOWARD]
}FaceTracking.kt

Memahami jenis blendshape wajah

Tabel berikut mencantumkan setiap jenis bentuk campuran wajah:

Blendshape wilayah atas

Nama	Gambar Referensi
`BROW_LOWERER_L`	`BROW_LOWERER_L = 0.0`	`BROW_LOWERER_L = 1.0`
`BROW_LOWERER_R`	`BROW_LOWERER_R = 0.0`	`BROW_LOWERER_R = 1.0`
`EYES_CLOSED_L`	`EYES_CLOSED_L = 0.0`	`EYES_CLOSED_L = 1.0`
`EYES_CLOSED_R`	`EYES_CLOSED_R = 0.0`	`EYES_CLOSED_R = 1.0`
`EYES_LOOK_DOWN_L`	`EYES_LOOK_DOWN_L = 0.0`	`EYES_LOOK_DOWN_L = 1.0`
`EYES_LOOK_DOWN_R`	`EYES_LOOK_DOWN_R = 0.0`	`EYES_LOOK_DOWN_R = 1.0`
`EYES_LOOK_LEFT_L`	`EYES_LOOK_LEFT_L = 0.0`	`EYES_LOOK_LEFT_L = 1.0`
`EYES_LOOK_LEFT_R`	`EYES_LOOK_LEFT_R = 0.0`	`EYES_LOOK_LEFT_R = 1.0`
`EYES_LOOK_RIGHT_L`	`EYES_LOOK_RIGHT_L = 0.0`	`EYES_LOOK_RIGHT_L = 1.0`
`EYES_LOOK_RIGHT_R`	`EYES_LOOK_RIGHT_R = 0.0`	`EYES_LOOK_RIGHT_R = 1.0`
`EYES_LOOK_UP_L`	`EYES_LOOK_UP_L = 0.0`	`EYES_LOOK_UP_L = 1.0`
`EYES_LOOK_UP_R`	`EYES_LOOK_UP_R = 0.0`	`EYES_LOOK_UP_R = 1.0`
`INNER_BROW_RAISER_L`	`INNER_BROW_RAISER_L = 0.0`	`INNER_BROW_RAISER_L = 1.0`
`INNER_BROW_RAISER_R`	`INNER_BROW_RAISER_R = 0.0`	`INNER_BROW_RAISER_R = 1.0`
`LID_TIGHTENER_L`	`LID_TIGHTENER_L = 0.0`	`LID_TIGHTENER_L = 1.0`
`LID_TIGHTENER_R`	`LID_TIGHTENER_R = 0.0`	`LID_TIGHTENER_R = 1.0`
`OUTER_BROW_RAISER_L`	`OUTER_BROW_RAISER_L = 0.0`	`OUTER_BROW_RAISER_L = 1.0`
`OUTER_BROW_RAISER_R`	`OUTER_BROW_RAISER_R = 0.0`	`OUTER_BROW_RAISER_R = 1.0`
`UPPER_LID_RAISER_L`	`UPPER_LID_RAISER_L = 0.0`	`UPPER_LID_RAISER_L = 1.0`
`UPPER_LID_RAISER_R`	`UPPER_LID_RAISER_R = 0.0`	`UPPER_LID_RAISER_R = 1.0`

Blendshape wilayah bawah

Nama	Gambar Referensi
`CHEEK_PUFF_L`	`CHEEK_PUFF_L = 0.0`	`CHEEK_PUFF_L = 1.0`
`CHEEK_PUFF_R`	`CHEEK_PUFF_R = 0.0`	`CHEEK_PUFF_R = 1.0`
`CHEEK_RAISER_L`	`CHEEK_RAISER_L = 0.0`	`CHEEK_RAISER_L = 1.0`
`CHEEK_RAISER_R`	`CHEEK_RAISER_R = 0.0`	`CHEEK_RAISER_R = 1.0`
`CHEEK_SUCK_L`	`CHEEK_SUCK_L = 0.0`	`CHEEK_SUCK_L = 1.0`
`CHEEK_SUCK_R`	`CHEEK_SUCK_R = 0.0`	`CHEEK_SUCK_R = 1.0`
`CHIN_RAISER_B`	`CHIN_RAISER_B = 0.0`	`CHIN_RAISER_B = 1.0`
`CHIN_RAISER_T`	`CHIN_RAISER_T = 0.0`	`CHIN_RAISER_T = 1.0`
`DIMPLER_L`	`DIMPLER_L = 0.0`	`DIMPLER_L = 1.0`
`DIMPLER_R`	`DIMPLER_R = 0.0`	`DIMPLER_R = 1.0`
`JAW_DROP`	`JAW_DROP = 0.0`	`JAW_DROP = 1.0`
`JAW_SIDEWAYS_LEFT`	`JAW_SIDEWAYS_LEFT = 0.0`	`JAW_SIDEWAYS_LEFT = 1.0`
`JAW_SIDEWAYS_RIGHT`	`JAW_SIDEWAYS_RIGHT = 0.0`	`JAW_SIDEWAYS_RIGHT = 1.0`
`JAW_THRUST`	`JAW_THRUST = 0.0`	`JAW_THRUST = 1.0`
`LIP_CORNER_DEPRESSOR_L`	`LIP_CORNER_DEPRESSOR_L = 0.0`	`LIP_CORNER_DEPRESSOR_L = 1.0`
`LIP_CORNER_DEPRESSOR_R`	`LIP_CORNER_DEPRESSOR_R = 0.0`	`LIP_CORNER_DEPRESSOR_R = 1.0`
`LIP_CORNER_PULLER_L`	`LIP_CORNER_PULLER_L = 0.0`	`LIP_CORNER_PULLER_L = 1.0`
`LIP_CORNER_PULLER_R`	`LIP_CORNER_PULLER_R = 0.0`	`LIP_CORNER_PULLER_R = 1.0`
`LIP_FUNNELER_LB`	`LIP_FUNNELER_LB = 0.0`	`LIP_FUNNELER_LB = 1.0`
`LIP_FUNNELER_LT`	`LIP_FUNNELER_LT = 0.0`	`LIP_FUNNELER_LT = 1.0`
`LIP_FUNNELER_RB`	`LIP_FUNNELER_RB = 0.0`	`LIP_FUNNELER_RB = 1.0`
`LIP_FUNNELER_RT`	`LIP_FUNNELER_RT = 0.0`	`LIP_FUNNELER_RT = 1.0`
`LIP_PRESSOR_L`	`LIP_PRESSOR_L = 0.0`	`LIP_PRESSOR_L = 1.0`
`LIP_PRESSOR_R`	`LIP_PRESSOR_R = 0.0`	`LIP_PRESSOR_R = 1.0`
`LIP_PUCKER_L`	`LIP_PUCKER_L = 0.0`	`LIP_PUCKER_L = 1.0`
`LIP_PUCKER_R`	`LIP_PUCKER_R = 0.0`	`LIP_PUCKER_R = 1.0`
`LIP_STRETCHER_L`	`LIP_STRETCHER_L = 0.0`	`LIP_STRETCHER_L = 1.0`
`LIP_STRETCHER_R`	`LIP_STRETCHER_R = 0.0`	`LIP_STRETCHER_R = 1.0`
`LIP_SUCK_LB`	`LIP_SUCK_LB = 0.0`	`LIP_SUCK_LB = 1.0`
`LIP_SUCK_LT`	`LIP_SUCK_LT = 0.0`	`LIP_SUCK_LT = 1.0`
`LIP_SUCK_RB`	`LIP_SUCK_RB = 0.0`	`LIP_SUCK_RB = 1.0`
`LIP_SUCK_RT`	`LIP_SUCK_RT = 0.0`	`LIP_SUCK_RT = 1.0`
`LIP_TIGHTENER_L`	`LIP_TIGHTENER_L = 0.0`	`LIP_TIGHTENER_L = 1.0`
`LIP_TIGHTENER_R`	`LIP_TIGHTENER_R = 0.0`	`LIP_TIGHTENER_R = 1.0`
`LIPS_TOWARD`	`LIPS_TOWARD = 0.0`	`JAW_DROP = 1.0 and LIPS_TOWARD = 1.0`
`LOWER_LIP_DEPRESSOR_L`	`LOWER_LIP_DEPRESSOR_L = 0.0`	`LOWER_LIP_DEPRESSOR_L = 1.0`
`LOWER_LIP_DEPRESSOR_R`	`LOWER_LIP_DEPRESSOR_R = 0.0`	`LOWER_LIP_DEPRESSOR_R = 1.0`
`MOUTH_LEFT`	`MOUTH_LEFT = 0.0`	`MOUTH_LEFT = 1.0`
`MOUTH_RIGHT`	`MOUTH_RIGHT = 0.0`	`MOUTH_RIGHT = 1.0`
`NOSE_WRINKLER_L`	`NOSE_WRINKLER_L = 0.0`	`NOSE_WRINKLER_L = 1.0`
`NOSE_WRINKLER_R`	`NOSE_WRINKLER_R = 0.0`	`NOSE_WRINKLER_R = 1.0`
`UPPER_LIP_RAISER_L`	`UPPER_LIP_RAISER_L = 0.0`	`UPPER_LIP_RAISER_L = 1.0`
`UPPER_LIP_RAISER_R`	`UPPER_LIP_RAISER_R = 0.0`	`UPPER_LIP_RAISER_R = 1.0`
`TONGUE_OUT`	TONGUE_OUT = 0.0	TONGUE_OUT = 1.0
`TONGUE_LEFT`	TONGUE_LEFT = 0.0	TONGUE_LEFT = 1.0
`TONGUE_RIGHT`	TONGUE_RIGHT = 0.0	TONGUE_RIGHT = 1.0
`TONGUE_UP`	TONGUE_UP = 0.0	TONGUE_UP = 1.0
`TONGUE_DOWN`	TONGUE_DOWN = 0.0	TONGUE_DOWN = 1.0