def __init__(self, config, bus, verbose=False):
super().__init__(config, bus)
bus.register('localized_artf', 'debug_rgbd', 'dropped')
self.verbose = verbose
model_path = config.get('model_path', 'subt/models/system/edgetpu.0/model_edgetpu.tflite')
self.interpreter = edgetpu.make_interpreter(model_path, device=config.get('device'))
self.interpreter.allocate_tensors()
self.thresholds = config.get('thresholds', {
'backpack': 0.84,
'survivor': 0.95,
'phone': 1000, # Disabled.
'rope': 0.85,
'helmet': 0.95,
'fire_extinguisher': 0.85,
'drill': 0.9,
'vent': 0.95,
'cube': 1000 # Disabled.
})
self.categories = dict(enumerate(self.thresholds.keys()))
self.min_threshold = min(self.thresholds.values())
self.min_depth = config.get('min_depth', 0.1)
self.max_depth = config.get('max_depth', 10.0)
self.min_valid_depth_pixels = config.get('min_valid_depth_pixels', 4)
self.camera_params = config['camera']
self.batch_size = config.get('batch_size', 1) # how many images process in one step
self.input_size = coral_common.input_size(self.interpreter)
def get_objects(interpreter,
score_threshold=-float('inf'),
image_scale=(1.0, 1.0)):
"""Gets results from a detection model as a list of detected objects.
Args:
interpreter: The ``tf.lite.Interpreter`` to query for results.
score_threshold (float): The score threshold for results. All returned
results have a score greater-than-or-equal-to this value.
image_scale (float, float): Scaling factor to apply to the bounding boxes
as (x-scale-factor, y-scale-factor), where each factor is from 0 to 1.0.
Returns:
A list of :obj:`Object` objects, which each contains the detected object's
id, score, and bounding box as :obj:`BBox`.
"""
boxes = common.output_tensor(interpreter, 0)[0]
class_ids = common.output_tensor(interpreter, 1)[0]
scores = common.output_tensor(interpreter, 2)[0]
count = int(common.output_tensor(interpreter, 3)[0])
width, height = common.input_size(interpreter)
image_scale_x, image_scale_y = image_scale
sx, sy = width / image_scale_x, height / image_scale_y
def make(i):
ymin, xmin, ymax, xmax = boxes[i]
return Object(id=int(class_ids[i]),
score=int(scores[i]),
bbox=BBox(xmin=xmin, ymin=ymin, xmax=xmax,
ymax=ymax).scale(sx, sy).map(int))
return [make(i) for i in range(count) if scores[i] >= score_threshold]
def classify_image(model_file, image_file, image_quantization=None):
"""Runs image classification and returns result with the highest score.
Args:
model_file: string, model file name.
image_file: string, image file name.
image_quantization: (scale: float, zero_point: float), assumed image
quantization parameters.
Returns:
Classification result with the highest score as (index, score) tuple.
"""
interpreter = make_interpreter(test_data_path(model_file))
interpreter.allocate_tensors()
image = test_image(image_file, common.input_size(interpreter))
input_type = common.input_details(interpreter, 'dtype')
if np.issubdtype(input_type, np.floating):
# This preprocessing is specific to MobileNet V1 with floating point input.
image = (input_type(image) - 127.5) / 127.5
if np.issubdtype(input_type, np.integer) and image_quantization:
image = rescale_image(
image, image_quantization,
common.input_details(interpreter, 'quantization'), input_type)
common.set_input(interpreter, image)
interpreter.invoke()
return classify.get_classes(interpreter)[0]
def __init__(self, model_path, device):
self.__interpreter = edgetpu.make_interpreter(os.path.join(
model_path, 'edgetpu.tflite'),
device=device)
self.__interpreter.allocate_tensors()
self.__model_shape = common.input_size(self.__interpreter)
def thread_job(model_name, input_filename, num_inferences, task_type,
device):
"""Runs classification or detection job on one Python thread."""
tid = threading.get_ident()
logging.info('Thread: %d, # inferences: %d, model: %s', tid,
num_inferences, model_name)
interpreter = make_interpreter(test_utils.test_data_path(model_name),
device)
interpreter.allocate_tensors()
with test_utils.test_image(input_filename) as img:
if task_type == 'classification':
resize_image = img.resize(common.input_size(interpreter),
Image.NEAREST)
common.set_input(interpreter, resize_image)
elif task_type == 'detection':
common.set_resized_input(
interpreter, img.size,
lambda size: img.resize(size, Image.NEAREST))
else:
raise ValueError(
'task_type should be classification or detection, but is given %s'
% task_type)
for _ in range(num_inferences):
interpreter.invoke()
if task_type == 'classification':
classify.get_classes(interpreter)
else:
detect.get_objects(interpreter)
logging.info('Thread: %d, model: %s done', tid, model_name)
def __init__(
self,
sample_im,
model_dir='/mounted_folder/models',
model_name='ssdlite_mobiledet_coco_qat_postprocess_edgetpu.tflite',
img_size=416,
conf_thres=0.5,
classes_ids=[80],
max_instances_per_class=5):
# ssdlite_mobiledet_coco_qat_postprocess_edgetpu.tflite | ssd_mobilenet_v2_coco_quant_postprocess_edgetpu.tflite
self.img_size = img_size
self.conf_thres = conf_thres
self.classes_ids = classes_ids
# if isinstance(max_instances_per_class, int):
# self.max_instances_per_class = [max_instances_per_class]*len(classes_ids)
# elif len(max_instances_per_class)== len(classes_ids):
# self.max_instances_per_class = max_instances_per_class
# else:
# raise NameError('Inconsistent max instances per class and classes ids')
self.classes_ids = classes_ids
# Initialize the TF interpreter
model_file_path_and_name = os.path.join(model_dir, model_name)
self.interpreter = edgetpu.make_interpreter(model_file_path_and_name)
self.interpreter.allocate_tensors()
self.size = common.input_size(self.interpreter)
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--model',
help='File path of Tflite model.',
required=True)
parser.add_argument('--labels',
help='File path of label file.',
required=True)
parser.add_argument('--picamera',
action='store_true',
help="Use PiCamera for image capture",
default=False)
parser.add_argument('-t',
'--threshold',
type=float,
default=0.5,
help='Classification score threshold')
args = parser.parse_args()
print('Loading {} with {} labels.'.format(args.model, args.labels))
interpreter = make_interpreter(args.model)
interpreter.allocate_tensors()
labels = read_label_file(args.labels)
size = common.input_size(interpreter)
# Initialize video stream
vs = VideoStream(usePiCamera=args.picamera, resolution=(640, 480)).start()
time.sleep(1)
fps = FPS().start()
while True:
try:
# Read frame from video
screenshot = vs.read()
image = Image.fromarray(screenshot)
image_pred = image.resize(size, Image.ANTIALIAS)
common.set_input(interpreter, image_pred)
interpreter.invoke()
classes = classify.get_classes(interpreter, 1, args.threshold)
draw_image(image, classes, labels)
if (cv2.waitKey(5) & 0xFF == ord('q')):
fps.stop()
break
fps.update()
except KeyboardInterrupt:
fps.stop()
break
print("Elapsed time: " + str(fps.elapsed()))
print("Approx FPS: :" + str(fps.fps()))
cv2.destroyAllWindows()
vs.stop()
time.sleep(2)
def __init__(self, model, device=':0', keep_aspect_ratio=True):
self.img_sub = rospy.Subscriber("~input", ImageMsg, self.callback)
self.interpreter = make_interpreter(model, device=device)
self.interpreter.allocate_tensors()
self.model_input_width, self.model_input_height = common.input_size(
self.interpreter)
self.keep_aspect_ratio = keep_aspect_ratio
self.bridge = CvBridge()
def __init__(self):
self.face_model = os.path.join(
os.path.dirname(__file__),
'models/mobilenet_ssd_v2_face_quant_postprocess_edgetpu.tflite')
self.max_faces = 10
self.threshold = FACE_DETECTOR_THRESHOLD
self.interpreter = make_interpreter(self.face_model)
self.interpreter.allocate_tensors()
self.inference_size = input_size(self.interpreter)
def __init__(self):
super().__init__("CoralWorker")
self.interpreter = make_interpreter(
os.path.join(
ExopticonWorker.get_data_dir(),
"ssd_mobilenet_v2_coco_quant_postprocess_edgetpu.tflite"))
self.interpreter.allocate_tensors()
input_size = common.input_size(self.interpreter)
self.labels = read_label_file(
os.path.join(ExopticonWorker.get_data_dir(), "coco_labels.txt"))
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--model',
required=True,
help='Path of the segmentation model.')
parser.add_argument('--input',
required=True,
help='File path of the input image.')
parser.add_argument('--output',
default='semantic_segmentation_result.jpg',
help='File path of the output image.')
parser.add_argument(
'--keep_aspect_ratio',
action='store_true',
default=False,
help=
('keep the image aspect ratio when down-sampling the image by adding '
'black pixel padding (zeros) on bottom or right. '
'By default the image is resized and reshaped without cropping. This '
'option should be the same as what is applied on input images during '
'model training. Otherwise the accuracy may be affected and the '
'bounding box of detection result may be stretched.'))
args = parser.parse_args()
interpreter = make_interpreter(args.model, device=':0')
interpreter.allocate_tensors()
width, height = common.input_size(interpreter)
img = Image.open(args.input)
if args.keep_aspect_ratio:
resized_img, _ = common.set_resized_input(
interpreter, img.size,
lambda size: img.resize(size, Image.ANTIALIAS))
else:
resized_img = img.resize((width, height), Image.ANTIALIAS)
common.set_input(interpreter, resized_img)
interpreter.invoke()
result = segment.get_output(interpreter)
if len(result.shape) == 3:
result = np.argmax(result, axis=-1)
# If keep_aspect_ratio, we need to remove the padding area.
new_width, new_height = resized_img.size
result = result[:new_height, :new_width]
mask_img = Image.fromarray(label_to_color_image(result).astype(np.uint8))
# Concat resized input image and processed segmentation results.
output_img = Image.new('RGB', (2 * new_width, new_height))
output_img.paste(resized_img, (0, 0))
output_img.paste(mask_img, (width, 0))
output_img.save(args.output)
print('Done. Results saved at', args.output)
def classification_job(classification_model, image_name, num_inferences):
"""Runs classification job."""
interpreter = make_interpreter(classification_model, device=':0')
interpreter.allocate_tensors()
size = common.input_size(interpreter)
with open_image(image_name) as image:
common.set_input(interpreter, image.resize(size, Image.NEAREST))
for _ in range(num_inferences):
interpreter.invoke()
classify.get_classes(interpreter, top_k=1)
def main():
default_model_dir = '../all_models'
default_model = 'mobilenet_ssd_v2_coco_quant_postprocess_edgetpu.tflite'
default_labels = 'coco_labels.txt'
parser = argparse.ArgumentParser()
parser.add_argument('--model',
help='.tflite model path',
default=os.path.join(default_model_dir, default_model))
parser.add_argument('--labels',
help='label file path',
default=os.path.join(default_model_dir,
default_labels))
parser.add_argument(
'--top_k',
type=int,
default=3,
help='number of categories with highest score to display')
parser.add_argument('--camera_idx',
type=int,
help='Index of which video source to use. ',
default=0)
parser.add_argument('--threshold',
type=float,
default=0.1,
help='classifier score threshold')
args = parser.parse_args()
print('Loading {} with {} labels.'.format(args.model, args.labels))
interpreter = make_interpreter(args.model)
interpreter.allocate_tensors()
labels = read_label_file(args.labels)
inference_size = input_size(interpreter)
cap = cv2.VideoCapture(args.camera_idx)
while cap.isOpened():
ret, frame = cap.read()
if not ret:
break
cv2_im = frame
cv2_im_rgb = cv2.cvtColor(cv2_im, cv2.COLOR_BGR2RGB)
cv2_im_rgb = cv2.resize(cv2_im_rgb, inference_size)
run_inference(interpreter, cv2_im_rgb.tobytes())
objs = get_objects(interpreter, args.threshold)[:args.top_k]
cv2_im = append_objs_to_img(cv2_im, inference_size, objs, labels)
cv2.imshow('frame', cv2_im)
if cv2.waitKey(1) & 0xFF == ord('q'):
break
cap.release()
cv2.destroyAllWindows()
def main():
parser = argparse.ArgumentParser(
formatter_class=argparse.ArgumentDefaultsHelpFormatter)
parser.add_argument('-m',
'--model',
required=True,
help='File path of .tflite file.')
parser.add_argument('-i',
'--input',
required=True,
help='Image to be classified.')
parser.add_argument('-l', '--labels', help='File path of labels file.')
parser.add_argument('-k',
'--top_k',
type=int,
default=1,
help='Max number of classification results')
parser.add_argument('-t',
'--threshold',
type=float,
default=0.0,
help='Classification score threshold')
parser.add_argument('-c',
'--count',
type=int,
default=5,
help='Number of times to run inference')
args = parser.parse_args()
labels = read_label_file(args.labels) if args.labels else {}
interpreter = make_interpreter(*args.model.split('@'))
interpreter.allocate_tensors()
size = common.input_size(interpreter)
image = Image.open(args.input).convert('RGB').resize(size, Image.ANTIALIAS)
common.set_input(interpreter, image)
print('----INFERENCE TIME----')
print('Note: The first inference on Edge TPU is slow because it includes',
'loading the model into Edge TPU memory.')
for _ in range(args.count):
start = time.perf_counter()
interpreter.invoke()
inference_time = time.perf_counter() - start
classes = classify.get_classes(interpreter, args.top_k, args.threshold)
print('%.1fms' % (inference_time * 1000))
print('-------RESULTS--------')
for c in classes:
print('%s: %.5f' % (labels.get(c.id, c.id), c.score))
def detect_and_classify_faces(detector,
classifier,
image,
threshold,
padding=10):
predictions = []
boxes = []
faces = []
height, width, _ = image.shape
detector_target_size = common.input_size(detector)
classifier_target_size = common.input_size(classifier)
scale_x, scale_y = width / detector_target_size[
0], height / detector_target_size[1]
resized_image = cv2.resize(image, detector_target_size)
run_inference(detector, resized_image.tobytes())
objects = detect.get_objects(detector, threshold)
for object in objects:
bbox = object.bbox.scale(scale_x, scale_y)
startX, startY = int(bbox.xmin - padding), int(bbox.ymin - padding)
endX, endY = int(bbox.xmax + padding), int(bbox.ymax + padding)
# ensure the bounding boxes fall within the dimensions of the image
(startX, startY) = (max(1, startX), max(1, startY))
(endX, endY) = (min(width - 1, endX), min(height - 1, endY))
boxes.append((startX, startY, endX, endY))
face = image[startY:endY, startX:endX]
face = cv2.resize(face, classifier_target_size)
faces.append(face)
for face in faces:
run_inference(classifier, face.tobytes())
prediction = classify.get_scores(classifier)
predictions.append(prediction)
return (boxes, predictions)
def configure(self, modelDir):
# Workaround, if no edgetpu is available
if not edgetpu.list_edge_tpus():
print("No EdgeTPUs found. Using the CPU only...")
from tflite_runtime.interpreter import Interpreter
self.interpreter = Interpreter(modelDir + "/model.tflite")
else:
print("EdgeTPU found. Connecting to it via PyCoral...")
from pycoral.utils.edgetpu import make_interpreter
self.interpreter = make_interpreter(modelDir + "/model.tflite")
self.interpreter.allocate_tensors()
self.modelDir = modelDir
self._inputSize = common.input_size(self.interpreter)
self._labels = dataset.read_label_file(modelDir + "/labels.txt")
def main():
default_model_dir = '../all_models'
default_model = 'mobilenet_v2_1.0_224_quant_edgetpu.tflite'
default_labels = 'imagenet_labels.txt'
parser = argparse.ArgumentParser()
parser.add_argument('--model',
help='.tflite model path',
default=os.path.join(default_model_dir, default_model))
parser.add_argument('--labels',
help='label file path',
default=os.path.join(default_model_dir,
default_labels))
args = parser.parse_args()
with open(args.labels, 'r') as f:
pairs = (l.strip().split(maxsplit=1) for l in f.readlines())
labels = dict((int(k), v) for k, v in pairs)
interpreter = make_interpreter(args.model)
interpreter.allocate_tensors()
pygame.init()
pygame.camera.init()
camlist = pygame.camera.list_cameras()
print('By default using camera: ', camlist[-1])
camera = pygame.camera.Camera(camlist[-1], (640, 480))
inference_size = input_size(interpreter)
camera.start()
try:
last_time = time.monotonic()
while True:
imagen = camera.get_image()
imagen = pygame.transform.scale(imagen, inference_size)
start_ms = time.time()
run_inference(interpreter, imagen.get_buffer().raw)
results = get_classes(interpreter, top_k=3, score_threshold=0)
stop_time = time.monotonic()
inference_ms = (time.time() - start_ms) * 1000.0
fps_ms = 1.0 / (stop_time - last_time)
last_time = stop_time
annotate_text = 'Inference: {:5.2f}ms FPS: {:3.1f}'.format(
inference_ms, fps_ms)
for result in results:
annotate_text += '\n{:.0f}% {}'.format(100 * result[1],
labels[result[0]])
print(annotate_text)
finally:
camera.stop()
def segment_image(model_file, image_file, mask_file):
interpreter = make_interpreter(test_data_path(model_file))
interpreter.allocate_tensors()
image = Image.open(test_data_path(image_file)).resize(
common.input_size(interpreter), Image.ANTIALIAS)
common.set_input(interpreter, image)
interpreter.invoke()
result = segment.get_output(interpreter)
if len(result.shape) > 2:
result = np.argmax(result, axis=2)
reference = np.asarray(Image.open(test_data_path(mask_file)))
return array_iou(result, reference)
def run_benchmark(model):
"""Measures training time for given model with random data.
Args:
model: string, file name of the input model.
Returns:
float, training time in ms.
"""
engine = ImprintingEngine(test_utils.test_data_path(model),
keep_classes=False)
extractor = make_interpreter(engine.serialize_extractor_model(),
device=':0')
extractor.allocate_tensors()
width, height = common.input_size(extractor)
np.random.seed(12345)
# 10 Categories, each has 20 images.
data_by_category = collections.defaultdict(list)
for i in range(10):
for _ in range(20):
data_by_category[i].append(
np.random.randint(0, 256, (height, width, 3), dtype=np.uint8))
delegate = load_edgetpu_delegate({'device': ':0'})
inference_time = 0.
for class_id, tensors in enumerate(data_by_category.values()):
for tensor in tensors:
common.set_input(extractor, tensor)
extractor.invoke()
engine.train(classify.get_scores(extractor), class_id=class_id)
start = time.perf_counter()
interpreter = tflite.Interpreter(
model_content=engine.serialize_model(),
experimental_delegates=[delegate])
interpreter.allocate_tensors()
common.set_input(interpreter, tensors[0])
interpreter.invoke()
classify.get_classes(interpreter, top_k=3)
inference_time += (time.perf_counter() - start) * 1000
print('Model: %s' % model)
print('Inference time: %.2fms' % inference_time)
return inference_time
def main():
# 入力変数（配列）設定 ->
parser = argparse.ArgumentParser(
formatter_class=argparse.ArgumentDefaultsHelpFormatter)
parser.add_argument('-m', '--model', default='mobilenet_v2_1.0_224_inat_bird_quant_edgetpu.tflite',
help='File path of .tflite file.')
parser.add_argument('-i', '--input', default='parrot.jpg',
help='Image to be classified.')
parser.add_argument('-l', '--labels', default='inat_bird_labels.txt',
help='File path of labels file.')
parser.add_argument('-k', '--top_k', type=int, default=1,
help='Max number of classification results')
parser.add_argument('-t', '--threshold', type=float, default=0.0,
help='Classification score threshold')
parser.add_argument('-c', '--count', type=int, default=5,
help='Number of times to run inference')
args = parser.parse_args()
# 入力変数（配列）設定 <-
# ラベル読み込み
labels = read_label_file(args.labels) if args.labels else {}
# モデル読み込み。Coral使用、未使用でモデル異なる
interpreter = make_interpreter(*args.model.split('@'))
# 推論用メモリ確保。モデル読み込み直後に実行必須
interpreter.allocate_tensors()
size = common.input_size(interpreter)
# 入力ファイルをRGB変換しinterpreterサイズに変更
image = Image.open(args.input).convert('RGB').resize(size, Image.ANTIALIAS)
# interpreterに入力イメージをセット
common.set_input(interpreter, image)
print('----INFERENCE TIME----')
print('Note: The first inference on Edge TPU is slow because it includes',
'loading the model into Edge TPU memory.')
# 入力変数（配列）で指定した回数分推論を繰り返す
for _ in range(args.count):
start = time.perf_counter() # 推論時間測定開始
interpreter.invoke() # 推論
inference_time = time.perf_counter() - start # 推論時間測定終了
# 入力変数（配列）で指定した一致率（args.threshold）以上のラベルの上位args.top_kを取得する
classes = classify.get_classes(interpreter, args.top_k, args.threshold)
print('%.1fms' % (inference_time * 1000)) # 推論時間表示
print('-------RESULTS--------')
for c in classes:
print('%s: %.5f' % (labels.get(c.id, c.id), c.score))
def get_classes(self, frame, top_k=1, threshold=0.0):
"""
Gets classification results as a list of ordered classes.
Args:
frame: The bitmap image to pass through the model.
top_k: The number of top results to return.
threshold: The minimum confidence score for returned results.
Returns:
A list of `Class` objects representing the classification results, ordered by scores.
See https://coral.ai/docs/reference/py/pycoral.adapters/#pycoral.adapters.classify.Class
"""
size = common.input_size(self.interpreter)
common.set_input(self.interpreter, cv2.resize(frame, size, fx=0, fy=0, interpolation = cv2.INTER_CUBIC))
self.interpreter.invoke()
return classify.get_classes(self.interpreter, top_k, threshold)
def image():
global running
global labels
global interpreter
if running:
return Response(response="{}", status=429, mimetype="application/json")
running = True
# Run an inference
interpreter.allocate_tensors()
size = common.input_size(interpreter)
image = Image.open(request.data).convert('RGB').resize(
size, Image.ANTIALIAS)
common.set_input(interpreter, image)
interpreter.invoke()
classes = classify.get_classes(interpreter, top_k=3)
nomouseValue = 0
mouseValue = 0
# Print the result
for c in classes:
label = labels.get(c.id, c.id)
score = c.score
if label == "nomouse":
nomouseValue = score
if label == "mouse":
mouseValue = score
running = False
# build a response dict to send back to client
response = {
'tags': {
'mouse': float(mouseValue),
'nomouse': float(nomouseValue)
}
}
# encode response using jsonpickle
response_pickled = jsonpickle.encode(response)
return Response(response=response_pickled,
status=200,
mimetype="application/json")
def capture_v(args):
global outputFrame, lock
print('Loading {} with {} labels.'.format(args.model, args.labels))
interpreter = make_interpreter(args.model)
interpreter.allocate_tensors()
labels = read_label_file(args.labels)
inference_size = input_size(interpreter)
cap = cv2.VideoCapture(args.camera_idx)
# cap.set(cv2.CAP_PROP_FOURCC, cv2.VideoWriter_fourcc(*'MJPG'))
# Sony PS3 EYE cam settings:
# 320x240 @ 125 FPS, 640x480 @ 60 FPS, 320x240 @187 FPS --> use excat FSP setting
cap.set(cv2.CAP_PROP_FPS, 187)
cap.set(cv2.CAP_PROP_FRAME_WIDTH, 320),
cap.set(cv2.CAP_PROP_FRAME_HEIGHT, 240)
size = (int(cap.get(cv2.CAP_PROP_FRAME_WIDTH)),
int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT)))
print("image size=", size)
fps = 0
start_time = time.time()
while cap.isOpened():
ret, frame = cap.read()
if not ret:
break
cv2_im = frame
# cv2_im_rgb = cv2.cvtColor(cv2_im, cv2.COLOR_BGR2RGB)
# cv2_im_rgb = cv2.resize(cv2_im_rgb, inference_size)
# run_inference(interpreter, cv2_im_rgb.tobytes())
# objs = get_objects(interpreter, args.threshold)[:args.top_k]
# cv2_im = append_objs_to_img(cv2_im, inference_size, objs, labels)
with lock:
outputFrame = cv2_im
fps += 1
if fps == 200:
end_time = time.time()
print("cam FPS:", fps / (end_time - start_time))
start_time = time.time()
fps = 0
cap.release()
def classification_task(num_inferences):
tid = threading.get_ident()
print('Thread: %d, %d inferences for classification task' %
(tid, num_inferences))
labels = read_label_file(test_utils.test_data_path('imagenet_labels.txt'))
model_name = 'mobilenet_v1_1.0_224_quant_edgetpu.tflite'
interpreter = make_interpreter(
test_utils.test_data_path(model_name), device=':0')
interpreter.allocate_tensors()
size = common.input_size(interpreter)
print('Thread: %d, using device 0' % tid)
with test_utils.test_image('cat.bmp') as img:
for _ in range(num_inferences):
common.set_input(interpreter, img.resize(size, Image.NEAREST))
interpreter.invoke()
ret = classify.get_classes(interpreter, top_k=1)
self.assertEqual(len(ret), 1)
self.assertEqual(labels[ret[0].id], 'Egyptian cat')
print('Thread: %d, done classification task' % tid)
def run_two_models_one_tpu(classification_model, detection_model, image_name,
num_inferences, batch_size):
"""Runs two models ALTERNATIVELY using one Edge TPU.
It runs classification model `batch_size` times and then switch to run
detection model `batch_size` time until each model is run `num_inferences`
times.
Args:
classification_model: string, path to classification model
detection_model: string, path to detection model.
image_name: string, path to input image.
num_inferences: int, number of inferences to run for each model.
batch_size: int, indicates how many inferences to run one model before
switching to the other one.
Returns:
double, wall time it takes to finish the job.
"""
start_time = time.perf_counter()
interpreter_a = make_interpreter(classification_model, device=':0')
interpreter_a.allocate_tensors()
interpreter_b = make_interpreter(detection_model, device=':0')
interpreter_b.allocate_tensors()
with open_image(image_name) as image:
size_a = common.input_size(interpreter_a)
common.set_input(interpreter_a, image.resize(size_a, Image.NEAREST))
_, scale_b = common.set_resized_input(
interpreter_b, image.size,
lambda size: image.resize(size, Image.NEAREST))
num_iterations = (num_inferences + batch_size - 1) // batch_size
for _ in range(num_iterations):
for _ in range(batch_size):
interpreter_a.invoke()
classify.get_classes(interpreter_a, top_k=1)
for _ in range(batch_size):
interpreter_b.invoke()
detect.get_objects(interpreter_b,
score_threshold=0.,
image_scale=scale_b)
return time.perf_counter() - start_time
def extract_embeddings(image_paths, interpreter):
"""Uses model to process images as embeddings.
Reads image, resizes and feeds to model to get feature embeddings. Original
image is discarded to keep maximum memory consumption low.
Args:
image_paths: ndarray, represents a list of image paths.
interpreter: TFLite interpreter, wraps embedding extractor model.
Returns:
ndarray of length image_paths.shape[0] of embeddings.
"""
input_size = common.input_size(interpreter)
feature_dim = classify.num_classes(interpreter)
embeddings = np.empty((len(image_paths), feature_dim), dtype=np.float32)
for idx, path in enumerate(image_paths):
with test_image(path) as img:
common.set_input(interpreter, img.resize(input_size, Image.NEAREST))
interpreter.invoke()
embeddings[idx, :] = classify.get_scores(interpreter)
return embeddings
def run_benchmark(model):
"""Measures training time for given model with random data.
Args:
model: string, file name of the input model.
Returns:
float, training time in ms.
"""
engine = ImprintingEngine(
test_utils.test_data_path(model), keep_classes=False)
extractor = make_interpreter(engine.serialize_extractor_model())
extractor.allocate_tensors()
width, height = common.input_size(extractor)
np.random.seed(12345)
# 10 Categories, each has 20 images.
data_by_category = collections.defaultdict(list)
for i in range(10):
for _ in range(20):
data_by_category[i].append(
np.random.randint(0, 256, (height, width, 3), dtype=np.uint8))
start = time.perf_counter()
for class_id, tensors in enumerate(data_by_category.values()):
for tensor in tensors:
common.set_input(extractor, tensor)
extractor.invoke()
engine.train(classify.get_scores(extractor), class_id=class_id)
engine.serialize_model()
training_time = (time.perf_counter() - start) * 1000
print('Model: %s' % model)
print('Training time: %.2fms' % training_time)
return training_time
def run_two_models_one_tpu(classification_model, detection_model, image_name,
num_inferences, batch_size):
start_time = time.perf_counter()
interpreter_a = make_interpreter(classification_model, device=':0')
interpreter_a.allocate_tensors()
interpreter_b = make_interpreter(detection_model, device=':0')
interpreter_b.allocate_tensors()
identification = []
classification = []
with open_image(image_name) as image:
size_a = common.input_size(interpreter_a)
common.set_input(interpreter_a, image.resize(size_a, Image.NEAREST))
_, scale_b = common.set_resized_input(
interpreter_b, image.size,
lambda size: image.resize(size, Image.NEAREST))
num_iterations = (num_inferences + batch_size - 1) // batch_size
for _ in tqdm(range(num_iterations)):
for _ in range(batch_size):
identification_start_time = time.perf_counter()
interpreter_b.invoke()
detect.get_objects(interpreter_b, score_threshold=0.,
image_scale=scale_b)
identification.append(time.perf_counter() -
identification_start_time)
for _ in range(batch_size):
classification_start_time = time.perf_counter()
interpreter_a.invoke()
result1 = classify.get_classes(interpreter_a, top_k=4)
interpreter_a.invoke()
result2 = classify.get_classes(interpreter_a, top_k=4)
interpreter_a.invoke()
result3 = classify.get_classes(interpreter_a, top_k=4)
classification.append(time.perf_counter() -
classification_start_time)
total_time = time.perf_counter() - start_time
return total_time, identification, classification
def predict():
data = {"success": False}
if flask.request.method == "POST":
if flask.request.files.get("image"):
image_file = flask.request.files["image"]
image_bytes = image_file.read()
image = Image.open(io.BytesIO(image_bytes))
size = common.input_size(interpreter)
image = image.convert("RGB").resize(size, Image.ANTIALIAS)
# Run an inference
common.set_input(interpreter, image)
interpreter.invoke()
_, scale = common.set_resized_input(
interpreter, image.size,
lambda size: image.resize(size, Image.ANTIALIAS))
threshold = 0.4
objs = detect.get_objects(interpreter, threshold, scale)
if objs:
data["success"] = True
preds = []
for obj in objs:
preds.append({
"confidence": float(obj.score),
"label": labels[obj.id],
"y_min": int(obj.bbox[1]),
"x_min": int(obj.bbox[0]),
"y_max": int(obj.bbox[3]),
"x_max": int(obj.bbox[2]),
})
data["predictions"] = preds
# return the data dictionary as a JSON response
return flask.jsonify(data)
def init(args):
global HOLDER
HOLDER['model'] = args.model
labels_file = args.models_directory + args.labels
labels = read_label_file(labels_file) if args.labels else {}
model_file = args.models_directory + args.model
interpreter = make_interpreter(model_file)
interpreter.allocate_tensors()
print("\n Loaded engine with model : {}".format(model_file))
# Model must be uint8 quantized
if common.input_details(interpreter, 'dtype') != np.uint8:
raise ValueError('Only support uint8 input type.')
size = common.input_size(interpreter)
HOLDER['labels'] = labels
HOLDER['interpreter'] = interpreter
HOLDER['size'] = size
HOLDER['top_k'] = args.top_k
