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Add velocity filtering of DDE eyebrows

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This commit is contained in:
David Rowe 2015-04-29 22:07:10 -07:00
parent 5458ccd445
commit 42a4fd8884
2 changed files with 19 additions and 5 deletions
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22
interface/src/devices/DdeFaceTracker.cpp
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@ -169,7 +169,9 @@ DdeFaceTracker::DdeFaceTracker(const QHostAddress& host, quint16 serverPort, qui
_lastLeftEyeBlink(0.0f),
_filteredLeftEyeBlink(0.0f),
_lastRightEyeBlink(0.0f),
_filteredRightEyeBlink(0.0f)
_filteredRightEyeBlink(0.0f),
_lastBrowUp(0.0f),
_filteredBrowUp(0.0f)
{
_coefficients.resize(NUM_FACESHIFT_BLENDSHAPES);
@ -389,10 +391,20 @@ void DdeFaceTracker::decodePacket(const QByteArray& buffer) {
}
// Use BrowsU_C to control both brows' up and down
_coefficients[_browDownLeftIndex] = -_coefficients[_browUpCenterIndex];
_coefficients[_browDownRightIndex] = -_coefficients[_browUpCenterIndex];
_coefficients[_browUpLeftIndex] = _coefficients[_browUpCenterIndex];
_coefficients[_browUpRightIndex] = _coefficients[_browUpCenterIndex];
float browUp = _coefficients[_browUpCenterIndex];
if (isFiltering) {
const float BROW_VELOCITY_FILTER_STRENGHT = 0.8f;
float velocity = fabs(browUp - _lastBrowUp) / _averageMessageTime;
float velocityFilter = glm::clamp(velocity * BROW_VELOCITY_FILTER_STRENGHT, 0.0f, 1.0f);
_filteredBrowUp = velocityFilter * browUp + (1.0f - velocityFilter) * _filteredBrowUp;
_lastBrowUp = browUp;
browUp = _filteredBrowUp;
_coefficients[_browUpCenterIndex] = browUp;
}
_coefficients[_browUpLeftIndex] = browUp;
_coefficients[_browUpRightIndex] = browUp;
_coefficients[_browDownLeftIndex] = -browUp;
_coefficients[_browDownRightIndex] = -browUp;
// Offset jaw open coefficient
static const float JAW_OPEN_THRESHOLD = 0.16f;

2
interface/src/devices/DdeFaceTracker.h
View file

@ -109,6 +109,8 @@ private:
float _filteredLeftEyeBlink;
float _lastRightEyeBlink;
float _filteredRightEyeBlink;
float _lastBrowUp;
float _filteredBrowUp;
};
#endif // hifi_DdeFaceTracker_h