Hello. I have Hi-Link FM225 module for face recognition with FM225_V0.a8_3B version of firmware.
When i send VERIFY 0x12 or ENROLL 0x13 command i receive then MID_NOTE (1) packets with NID_FACE_STATE (1) type which contain s_note_data_face structure. The first five fields of structure are clear to me. The issue i have with pitch, yaw and roll fields. What units of measurement are used?
For example, when I look straight into the camera i get:
PITCH: 146, YAW: 59, ROLL: -17
PITCH: 146, YAW: 59, ROLL: -16
PITCH: 152, YAW: 60, ROLL: -12
When i turn the head from left to right (change yaw) i get:
PITCH: 176, YAW: 71, ROLL: 14
PITCH: 174, YAW: 71, ROLL: 12
PITCH: -171, YAW: 69, ROLL: 23
PITCH: 177, YAW: 70, ROLL: 14
PITCH: 179, YAW: 70, ROLL: 14
PITCH: -171, YAW: 69, ROLL: 23
PITCH: -172, YAW: 69, ROLL: 23
PITCH: -170, YAW: 68, ROLL: 26
PITCH: -176, YAW: 68, ROLL: 20
PITCH: -178, YAW: 66, ROLL: 19
PITCH: 173, YAW: 65, ROLL: 11
PITCH: 177, YAW: 66, ROLL: 15
PITCH: 175, YAW: 66, ROLL: 12
PITCH: 179, YAW: 66, ROLL: 14
PITCH: 179, YAW: 66, ROLL: 16
PITCH: 174, YAW: 65, ROLL: 8
PITCH: 171, YAW: 64, ROLL: 3
PITCH: 173, YAW: 65, ROLL: 7
PITCH: 163, YAW: 62, ROLL: -4
PITCH: 163, YAW: 60, ROLL: -8
PITCH: 150, YAW: 57, ROLL: -19
PITCH: 159, YAW: 59, ROLL: -12
PITCH: 157, YAW: 58, ROLL: -14
PITCH: 148, YAW: 53, ROLL: -25
PITCH: 151, YAW: 55, ROLL: -19
PITCH: 150, YAW: 51, ROLL: -24
PITCH: 144, YAW: 49, ROLL: -26
PITCH: 142, YAW: 47, ROLL: -28
PITCH: 143, YAW: 46, ROLL: -28
PITCH: 136, YAW: 42, ROLL: -29
PITCH: 134, YAW: 41, ROLL: -23
PITCH: 133, YAW: 39, ROLL: -28
PITCH: 128, YAW: 35, ROLL: -28
PITCH: 126, YAW: 32, ROLL: -21
PITCH: 123, YAW: 31, ROLL: -22
PITCH: 124, YAW: 30, ROLL: -21
When I nod my head (change pitch) i get:
PITCH: 133, YAW: 55, ROLL: -29
PITCH: 127, YAW: 52, ROLL: -34
PITCH: 120, YAW: 48, ROLL: -37
PITCH: 122, YAW: 50, ROLL: -36
PITCH: 114, YAW: 43, ROLL: -42
PITCH: 112, YAW: 41, ROLL: -44
PITCH: 112, YAW: 41, ROLL: -44
PITCH: 104, YAW: 33, ROLL: -48
PITCH: 106, YAW: 36, ROLL: -47
PITCH: 100, YAW: 27, ROLL: -50
PITCH: 99, YAW: 25, ROLL: -50
PITCH: 98, YAW: 24, ROLL: -50
PITCH: 99, YAW: 27, ROLL: -51
PITCH: 100, YAW: 28, ROLL: -51
PITCH: 96, YAW: 22, ROLL: -54
PITCH: 99, YAW: 26, ROLL: -48
When I tilt my head (change roll) i get:
PITCH: 132, YAW: 55, ROLL: 0
PITCH: 131, YAW: 55, ROLL: -8
PITCH: 131, YAW: 56, ROLL: -12
PITCH: 140, YAW: 59, ROLL: -12
PITCH: 131, YAW: 56, ROLL: -22
PITCH: 130, YAW: 55, ROLL: -28
PITCH: 135, YAW: 58, ROLL: -32
PITCH: 128, YAW: 54, ROLL: -45
PITCH: 133, YAW: 56, ROLL: -46
PITCH: 141, YAW: 62, ROLL: -47
I made the graphs with data (blue - pitch, red - yaw, green - roll).
When turn head from left to right:
When nod the head (from up to down):
When tilt the head:
How to interpret those data? I want to give the voice tips to an user during enrollment process or verification process.
Thanks in advance!
