def main():
camera = cv2.VideoCapture(0)
with open("categories.txt", "r") as categories_file:
categories = categories_file.read().splitlines()
input_shape = model.get_default_input_shape()
output_shape = model.get_default_output_shape()
while (cv2.waitKey(1) & 0xFF) != 27:
# Get the image from the camera
image = get_image_from_camera(camera)
# Prepare the image to pass to the model. This helper crops and resizes
# the image maintaining proper aspect ratio and return the resultant
# image instead of a numpy array. This is because we need to display
# the image with the regions drawn on top. Additionally, the heper will
# reorder the image from BGR to RGB
image = helpers.prepare_image_for_model(image,
input_shape.columns,
input_shape.rows,
reorder_to_rgb=True,
ravel=False)
input_data = image.astype(np.float32).ravel()
# Get the predictions by running the model. `predictions` is returned
# as a flat array
predictions = model.predict(input_data)
# Reshape the output of the model into a tensor that matches the
# expected shape
predictions = np.reshape(
predictions,
(output_shape.rows, output_shape.columns, output_shape.channels))
# Do some post-processing to extract the regions from the output of
# the model
regions = helpers.get_regions(predictions, categories,
CONFIDENCE_THRESHOLD, ANCHOR_BOXES)
# Get rid of any overlapping regions for the same object
regions = helpers.non_max_suppression(regions, OVERLAP_THRESHOLD,
categories)
# Draw the regions onto the image
helpers.draw_regions_on_image(image, regions)
# Display the image
image = cv2.cvtColor(image, cv2.COLOR_RGB2BGR)
cv2.imshow("Region detection", image)
def process_frame(frame, categories, frame_count, output_frame_path):
if frame is None:
print("Not valid input frame! Skip...")
return
# Get the model's input shape. We will use this information later to resize
# images appropriately.
input_shape = model.get_default_input_shape()
# Get the model's output shape and create an array to hold the model's
# output predictions
output_shape = model.get_default_output_shape()
predictions = model.FloatVector(output_shape.Size())
# Prepare an image for processing
# - Resize and center-crop to the required width and height while
# preserving aspect ratio.
# - OpenCV gives the image in BGR order. If needed, re-order the
# channels to RGB.
# - Convert the OpenCV result to a std::vector<float>
input_data = helpers.prepare_image_for_model(
frame, input_shape.columns, input_shape.rows)
# Send the image to the compiled model and fill the predictions vector
# with scores, measure how long it takes
start = time.time()
model.predict(input_data, predictions)
end = time.time()
# Get the value of the top 5 predictions
top_5 = helpers.get_top_n(predictions, 5)
if (len(top_5) > 0):
# Generate header text that represents the top5 predictions
header_text = ", ".join(["({:.0%}) {}".format(
element[1], categories[element[0]]) for element in top_5])
helpers.draw_header(frame, header_text)
# Generate footer text that represents the mean evaluation time
time_delta = end - start
footer_text = "{:.0f}ms/frame".format(time_delta * 1000)
helpers.draw_footer(frame, footer_text)
# save the processed frame
output_file_path = os.path.join(output_frame_path, "recognized_{}.png".format(frame_count))
cv2.imwrite(output_file_path, frame)
print("Processed frame {}: header text: {}, footer text: {}".format(frame_count, header_text, footer_text))
return header_text
else:
print("Processed frame {}: No recognized frame!")
return None
def main():
camera = cv2.VideoCapture(0)
# request a specific resolution (sometimes the camera has very small default resolution)
helpers.set_camera_resolution(camera, 1280, 720)
with open("categories.txt", "r") as categories_file:
categories = categories_file.read().splitlines()
input_shape = model.get_default_input_shape()
output_shape = model.get_default_output_shape()
while (cv2.waitKey(1) & 0xFF) != 27:
# Get the image from the camera
original = get_image_from_camera(camera)
# Prepare the image to pass to the model. This helper crops and resizes
# the image maintaining proper aspect ratio and return the resultant
# image instead of a numpy array. Additionally, the helper will
# reorder the image from BGR to RGB
image, offset, scale = helpers.prepare_image_for_model(
original,
input_shape.columns,
input_shape.rows,
reorder_to_rgb=True,
ravel=False)
# Get the predictions by running the model. `predictions` is returned
# as a flat array
predictions = model.predict(image)
# Reshape the output of the model into a tensor that matches the
# expected shape
predictions = np.reshape(predictions, (13, 13, 125))
# Do some post-processing to extract the regions from the output of
# the model
regions = helpers.get_regions(predictions, categories,
CONFIDENCE_THRESHOLD, ANCHOR_BOXES)
# Get rid of any overlapping regions for the same object
regions = helpers.non_max_suppression(regions, OVERLAP_THRESHOLD,
categories)
# Draw the regions onto the image
scale = (scale[0] * image.shape[1], scale[1] * image.shape[0])
helpers.draw_regions_on_image(original, regions, offset, scale)
# Display the image
cv2.imshow("Region detection", original)
colEnd = colStart + image.shape[0]
# Center crop the image maintaining aspect ratio
cropped = image[rowStart:rowEnd, colStart:colEnd]
# Resize to model's requirements
resized = cv2.resize(cropped, (requiredHeight, requiredWidth))
# Re-order if needed
if not reorderToRGB:
resized = cv2.cvtColor(resized, cv2.COLOR_BGR2RGB)
# Return as a vector of floats
result = resized.astype(np.float).ravel()
return result
# Get the input and output shapes
input_shape = model.get_default_input_shape()
output_shape = model.get_default_output_shape()
print("Model input shape: " +
str([input_shape.rows, input_shape.columns, input_shape.channels]))
print("Model output shape: " +
str([output_shape.rows, output_shape.columns, output_shape.channels]))
# Create a blank output of the appropriate size to hold the prediction results
predictions = model.FloatVector(output_shape.Size())
# Read in the sample image
image = cv2.imread("coffeemug.jpg")
# Prepare the image to send to the model
input = prepare_image_for_model(image, input_shape.columns, input_shape.rows)
def main():
"""Entry point for the script when called directly"""
# Open the video camera. To use a different camera, change the camera
# index.
camera = cv2.VideoCapture(0)
# Read the category names
with open("categories.txt", "r") as categories_file,\
open("dogs.txt", "r") as dogs_file,\
open("cats.txt", "r") as cats_file:
categories = categories_file.read().splitlines()
dogs = dogs_file.read().splitlines()
cats = cats_file.read().splitlines()
# Get the model's input dimensions. We'll use this information later to
# resize images appropriately.
input_shape = model.get_default_input_shape()
# Create a vector to hold the model's output predictions
predictions = model.FloatVector(model.get_default_output_shape().Size())
while (cv2.waitKey(1) & 0xFF) == 0xFF:
# Get an image from the camera. If you'd like to use a different image,
# load the image from some other source.
image = get_image_from_camera(camera)
# Prepare the image to pass to the model. This helper:
# - crops and resizes the image maintaining proper aspect ratio
# - reorders the image channels if needed
# - returns the data as a ravelled numpy array of floats so it can be
# handed to the model
input_data = helpers.prepare_image_for_model(image,
input_shape.columns,
input_shape.rows)
# Get the predicted classes using the model's predict function on the
# image input data. The predictions are returned as a vector with the
# probability that the image # contains the class represented by that
# index.
model.predict(input_data, predictions)
# Let's grab the value of the top prediction and its index, which
# represents the top most confident match and the class or category it
# belongs to.
top_n = helpers.get_top_n(predictions, 1, threshold=0.05)
# See whether the prediction is in one of our groups
group = ""
label = ""
if top_n:
top = top_n[0]
label = categories[top[0]]
if label_in_set(label, dogs):
group = "Dog"
elif label_in_set(label, cats):
group = "Cat"
header_text = ""
if group:
# A group was detected, so take action
top = top_n[0]
take_action(group)
header_text = "({:.0%}) {}".format(top[1], group)
helpers.draw_header(image, header_text)
# Display the image using opencv
cv2.imshow("Grouping", image)
def main():
# Open the video camera. To use a different camera, change the camera index.
camera = cv2.VideoCapture(0)
# Read the category names
categories = open('categories.txt', 'r').read().splitlines()
dogs = open('dogs.txt', 'r').read().splitlines()
cats = open('cats.txt', 'r').read().splitlines()
# Get the model's input dimensions. We'll use this information later to resize images appropriately.
inputShape = model.get_default_input_shape()
# Create a vector to hold the model's output predictions
outputShape = model.get_default_output_shape()
predictions = model.FloatVector(outputShape.Size())
headerText = ""
while ((cv2.waitKey(1) & 0xFF) == 0xFF):
# Get an image from the camera. If you'd like to use a different image, load the image from some other source.
image = get_image_from_camera(camera)
# Prepare the image to pass to the model. This helper:
# - crops and resizes the image maintaining proper aspect ratio
# - reorders the image channels if needed
# - returns the data as a ravelled numpy array of floats so it can be handed to the model
input = helpers.prepare_image_for_model(image, inputShape.columns,
inputShape.rows)
# Get the predicted classes using the model's predict function on the image input data.
# The predictions are returned as a vector with the probability that the image
# contains the class represented by that index.
model.predict(input, predictions)
# Let's grab the value of the top prediction and its index, which represents the top most
# confident match and the class or category it belongs to.
topN = helpers.get_top_n(predictions, 1, threshold=0.05)
# See whether the prediction is in one of our groups
group = ""
caption = ""
label = ""
if len(topN) > 0:
top = topN[0]
label = categories[top[0]]
if label_in_set(label, dogs):
group = "Dog"
elif label_in_set(label, cats):
group = "Cat"
if not group == "":
# A group was detected, so take action
top = topN[0]
take_action(group)
headerText = "(" + str(int(top[1] * 100)) + "%) " + group
else:
# No group was detected
headerText = ""
helpers.draw_header(image, headerText)
# Display the image using opencv
cv2.imshow('Grouping', image)
def main():
# Open the video camera. To use a different camera, change the camera
# index.
camera = cv2.VideoCapture(0)
# Read the category names
with open("categories.txt", "r") as categories_file:
categories = categories_file.read().splitlines()
# Get the model's input shape. We will use this information later to resize
# images appropriately.
input_shape = model.get_default_input_shape()
# Get the model's output shape and create an array to hold the model's
# output predictions
output_shape = model.get_default_output_shape()
predictions = model.FloatVector(output_shape.Size())
# Declare a variable to hold the prediction times
prediction_times = []
mean_time_to_predict = 0.0
while (cv2.waitKey(1) & 0xFF) == 0xFF:
# Get an image from the camera.
image = get_image_from_camera(camera)
# Prepare an image for processing
# - Resize and center-crop to the required width and height while
# preserving aspect ratio.
# - OpenCV gives the image in BGR order. If needed, re-order the
# channels to RGB.
# - Convert the OpenCV result to a std::vector<float>
input_data = helpers.prepare_image_for_model(image,
input_shape.columns,
input_shape.rows)
# Send the image to the compiled model and fill the predictions vector
# with scores, measure how long it takes
start = time.time()
model.predict(input_data, predictions)
end = time.time()
# Get the value of the top 5 predictions
top_5 = helpers.get_top_n(predictions, 5)
# Generate header text that represents the top5 predictions
header_text = ", ".join([
"({:.0%}) {}".format(element[1], categories[element[0]])
for element in top_5
])
helpers.draw_header(image, header_text)
# Generate footer text that represents the mean evaluation time
mean_time_to_predict = helpers.get_mean_duration(
prediction_times, end - start)
footer_text = "{:.0f}ms/frame".format(mean_time_to_predict * 1000)
helpers.draw_footer(image, footer_text)
# Display the image
cv2.imshow("ELL model", image)
print("Mean prediction time: {:.0f}ms/frame".format(mean_time_to_predict *
1000))
