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Code Issues Projects Releases Wiki Activity

Face detection (#14544)

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* Add support for face detection

* Add support for detecting faces during registration

* Set body size to be larger

* Undo
This commit is contained in:
Nicolas Mowen 2024-10-23 13:50:58 -06:00
parent fbf067b582
commit 491542c01f
5 changed files with 159 additions and 52 deletions
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2
docker/main/rootfs/usr/local/nginx/conf/nginx.conf
View File

@ -246,6 +246,8 @@ http {
proxy_no_cache $should_not_cache;
add_header X-Cache-Status $upstream_cache_status;
client_max_body_size 10M;
location /api/vod/ {
include auth_request.conf;
proxy_pass http://frigate_api/vod/;

3
frigate/api/defs/events_body.py
View File

@ -8,6 +8,9 @@ class EventsSubLabelBody(BaseModel):
subLabelScore: Optional[float] = Field(
title="Score for sub label", default=None, gt=0.0, le=1.0
)
camera: Optional[str] = Field(
title="Camera this object is detected on.", default=None
)
class EventsDescriptionBody(BaseModel):

39
frigate/api/event.py
View File

@ -901,22 +901,41 @@ def set_sub_label(
try:
event: Event = Event.get(Event.id == event_id)
except DoesNotExist:
if not body.camera:
return JSONResponse(
content=({"success": False, "message": "Event " + event_id + " not found"}),
content=(
{
"success": False,
"message": "Event "
+ event_id
+ " not found and camera is not provided.",
}
),
status_code=404,
)
event = None
if request.app.detected_frames_processor:
tracked_obj: TrackedObject = (
request.app.detected_frames_processor.camera_states[
event.camera if event else body.camera
].tracked_objects.get(event_id)
)
else:
tracked_obj = None
if not event and not tracked_obj:
return JSONResponse(
content=(
{"success": False, "message": "Event " + event_id + " not found."}
),
status_code=404,
)
new_sub_label = body.subLabel
new_score = body.subLabelScore
if not event.end_time:
# update tracked object
tracked_obj: TrackedObject = (
request.app.detected_frames_processor.camera_states[
event.camera
].tracked_objects.get(event.id)
)
if tracked_obj:
tracked_obj.obj_data["sub_label"] = (new_sub_label, new_score)
@ -925,6 +944,7 @@ def set_sub_label(
data=Timeline.data.update({"sub_label": (new_sub_label, new_score)})
).where(Timeline.source_id == event_id).execute()
if event:
event.sub_label = new_sub_label
if new_score:
@ -933,6 +953,7 @@ def set_sub_label(
event.data = data
event.save()
return JSONResponse(
content=(
{

3
frigate/embeddings/embeddings.py
View File

@ -129,7 +129,8 @@ class Embeddings:
model_name="facenet",
model_file="facenet.onnx",
download_urls={
"facenet.onnx": "https://github.com/NicolasSM-001/faceNet.onnx-/raw/refs/heads/main/faceNet.onnx"
"facenet.onnx": "https://github.com/NicolasSM-001/faceNet.onnx-/raw/refs/heads/main/faceNet.onnx",
"facedet.onnx": "https://github.com/opencv/opencv_zoo/raw/refs/heads/main/models/face_detection_yunet/face_detection_yunet_2023mar_int8.onnx",
},
model_size="large",
model_type=ModelTypeEnum.face,

122
frigate/embeddings/maintainer.py
View File

@ -72,6 +72,19 @@ class EmbeddingMaintainer(threading.Thread):
self.tracked_events: dict[str, list[any]] = {}
self.genai_client = get_genai_client(config)
@property
def face_detector(self) -> cv2.FaceDetectorYN:
# Lazily create the classifier.
if "face_detector" not in self.__dict__:
self.__dict__["face_detector"] = cv2.FaceDetectorYN.create(
"/config/model_cache/facenet/facedet.onnx",
config="",
input_size=(320, 320),
score_threshold=0.8,
nms_threshold=0.3,
)
return self.__dict__["face_detector"]
def run(self) -> None:
"""Maintain a SQLite-vec database for semantic search."""
while not self.stop_event.is_set():
@ -90,7 +103,7 @@ class EmbeddingMaintainer(threading.Thread):
def _process_requests(self) -> None:
"""Process embeddings requests"""
def _handle_request(topic: str, data: str) -> str:
def _handle_request(topic: str, data: dict[str, any]) -> str:
try:
if topic == EmbeddingsRequestEnum.embed_description.value:
return serialize(
@ -110,12 +123,34 @@ class EmbeddingMaintainer(threading.Thread):
self.embeddings.text_embedding([data])[0], pack=False
)
elif topic == EmbeddingsRequestEnum.register_face.value:
if data.get("cropped"):
self.embeddings.embed_face(
data["face_name"],
base64.b64decode(data["image"]),
upsert=True,
)
return None
return True
else:
img = cv2.imdecode(
np.frombuffer(
base64.b64decode(data["image"]), dtype=np.uint8
),
cv2.IMREAD_COLOR,
)
face_box = self._detect_face(img)
if not face_box:
return False
face = img[face_box[1] : face_box[3], face_box[0] : face_box[2]]
ret, webp = cv2.imencode(
".webp", face, [int(cv2.IMWRITE_WEBP_QUALITY), 100]
)
self.embeddings.embed_face(
data["face_name"], webp.tobytes(), upsert=True
)
return False
except Exception as e:
logger.error(f"Unable to handle embeddings request {e}")
@ -277,7 +312,7 @@ class EmbeddingMaintainer(threading.Thread):
if event_id:
self.handle_regenerate_description(event_id, source)
def _search_face(self, query_embedding: bytes) -> list:
def _search_face(self, query_embedding: bytes) -> list[tuple[str, float]]:
"""Search for the face most closely matching the embedding."""
sql_query = f"""
SELECT
@ -289,6 +324,29 @@ class EmbeddingMaintainer(threading.Thread):
"""
return self.embeddings.db.execute_sql(sql_query, [query_embedding]).fetchall()
def _detect_face(self, input: np.ndarray) -> tuple[int, int, int, int]:
"""Detect faces in input image."""
self.face_detector.setInputSize((input.shape[1], input.shape[0]))
faces = self.face_detector.detect(input)
if faces[1] is None:
return None
face = None
for _, potential_face in enumerate(faces[1]):
raw_bbox = potential_face[0:4].astype(np.uint16)
x: int = max(raw_bbox[0], 0)
y: int = max(raw_bbox[1], 0)
w: int = raw_bbox[2]
h: int = raw_bbox[3]
bbox = (x, y, x + w, y + h)
if face is None or area(bbox) > area(face):
face = bbox
return face
def _process_face(self, obj_data: dict[str, any], frame: np.ndarray) -> None:
"""Look for faces in image."""
id = obj_data["id"]
@ -309,8 +367,23 @@ class EmbeddingMaintainer(threading.Thread):
face: Optional[dict[str, any]] = None
if self.requires_face_detection:
# TODO run cv2 face detection
pass
logger.debug("Running manual face detection.")
person_box = obj_data.get("box")
if not person_box:
return None
rgb = cv2.cvtColor(frame, cv2.COLOR_YUV2RGB_I420)
left, top, right, bottom = person_box
person = rgb[top:bottom, left:right]
face = self._detect_face(person)
if not face:
logger.debug("Detected no faces for person object.")
return
face_frame = person[face[1] : face[3], face[0] : face[2]]
face_frame = cv2.cvtColor(face_frame, cv2.COLOR_RGB2BGR)
else:
# don't run for object without attributes
if not obj_data.get("current_attributes"):
@ -332,16 +405,16 @@ class EmbeddingMaintainer(threading.Thread):
face_box = face.get("box")
# check that face is valid
if (
not face_box
or area(face_box) < self.config.semantic_search.face_recognition.min_area
):
if not face_box or area(face_box) < self.config.face_recognition.min_area:
logger.debug(f"Invalid face box {face}")
return
face_frame = cv2.cvtColor(frame, cv2.COLOR_YUV2BGR_I420)
face_frame = face_frame[face_box[1] : face_box[3], face_box[0] : face_box[2]]
ret, jpg = cv2.imencode(
face_frame = face_frame[
face_box[1] : face_box[3], face_box[0] : face_box[2]
]
ret, webp = cv2.imencode(
".webp", face_frame, [int(cv2.IMWRITE_WEBP_QUALITY), 100]
)
@ -349,12 +422,13 @@ class EmbeddingMaintainer(threading.Thread):
logger.debug("Not processing face due to error creating cropped image.")
return
embedding = self.embeddings.embed_face("unknown", jpg.tobytes(), upsert=False)
embedding = self.embeddings.embed_face("unknown", webp.tobytes(), upsert=False)
query_embedding = serialize(embedding)
best_faces = self._search_face(query_embedding)
logger.debug(f"Detected best faces for person as: {best_faces}")
if not best_faces or len(best_faces) < REQUIRED_FACES:
logger.debug(f"{len(best_faces)} < {REQUIRED_FACES} min required faces.")
return
sub_label = str(best_faces[0][0]).split("-")[0]
@ -363,28 +437,34 @@ class EmbeddingMaintainer(threading.Thread):
for face in best_faces:
score = 1.0 - face[1]
if face[0] != sub_label:
if face[0].split("-")[0] != sub_label:
logger.debug("Detected multiple faces, result is not valid.")
return None
return
avg_score += score
avg_score = avg_score / REQUIRED_FACES
avg_score = round(avg_score / REQUIRED_FACES, 2)
if avg_score < self.config.semantic_search.face_recognition.threshold or (
if avg_score < self.config.face_recognition.threshold or (
id in self.detected_faces and avg_score <= self.detected_faces[id]
):
logger.debug(
"Detected face does not score higher than threshold / previous face."
f"Recognized face score {avg_score} is less than threshold ({self.config.face_recognition.threshold}) / previous face score ({self.detected_faces.get(id)})."
)
return None
return
self.detected_faces[id] = avg_score
requests.post(
resp = requests.post(
f"{FRIGATE_LOCALHOST}/api/events/{id}/sub_label",
json={"subLabel": sub_label, "subLabelScore": avg_score},
json={
"camera": obj_data.get("camera"),
"subLabel": sub_label,
"subLabelScore": avg_score,
},
)
if resp.status_code == 200:
self.detected_faces[id] = avg_score
def _create_thumbnail(self, yuv_frame, box, height=500) -> Optional[bytes]:
"""Return jpg thumbnail of a region of the frame."""
frame = cv2.cvtColor(yuv_frame, cv2.COLOR_YUV2BGR_I420)