diff options
Diffstat (limited to 'python/pyarmnn/examples/object_detection/run_video_stream.py')
-rw-r--r-- | python/pyarmnn/examples/object_detection/run_video_stream.py | 175 |
1 files changed, 90 insertions, 85 deletions
diff --git a/python/pyarmnn/examples/object_detection/run_video_stream.py b/python/pyarmnn/examples/object_detection/run_video_stream.py index 8635a40a9e..dba615b97e 100644 --- a/python/pyarmnn/examples/object_detection/run_video_stream.py +++ b/python/pyarmnn/examples/object_detection/run_video_stream.py @@ -1,85 +1,90 @@ -# Copyright © 2020 Arm Ltd and Contributors. All rights reserved.
-# SPDX-License-Identifier: MIT
-
-"""
-Object detection demo that takes a video stream from a device, runs inference
-on each frame producing bounding boxes and labels around detected objects,
-and displays a window with the latest processed frame.
-"""
-
-import os
-import sys
-script_dir = os.path.dirname(__file__)
-sys.path.insert(1, os.path.join(script_dir, '..', 'common'))
-
-import cv2
-from argparse import ArgumentParser
-
-from ssd import ssd_processing, ssd_resize_factor
-from yolo import yolo_processing, yolo_resize_factor
-from utils import dict_labels
-from cv_utils import init_video_stream_capture, preprocess, draw_bounding_boxes
-from network_executor import ArmnnNetworkExecutor
-
-
-def get_model_processing(model_name: str, video: cv2.VideoCapture, input_binding_info: tuple):
- """
- Gets model-specific information such as model labels and decoding and processing functions.
- The user can include their own network and functions by adding another statement.
-
- Args:
- model_name: Name of type of supported model.
- video: Video capture object, contains information about data source.
- input_binding_info: Contains shape of model input layer, used for scaling bounding boxes.
-
- Returns:
- Model labels, decoding and processing functions.
- """
- if model_name == 'ssd_mobilenet_v1':
- return ssd_processing, ssd_resize_factor(video)
- elif model_name == 'yolo_v3_tiny':
- return yolo_processing, yolo_resize_factor(video, input_binding_info)
- else:
- raise ValueError(f'{model_name} is not a valid model name')
-
-
-def main(args):
- video = init_video_stream_capture(args.video_source)
- executor = ArmnnNetworkExecutor(args.model_file_path, args.preferred_backends)
-
- process_output, resize_factor = get_model_processing(args.model_name, video, executor.input_binding_info)
- labels = dict_labels(args.label_path, include_rgb=True)
-
- while True:
- frame_present, frame = video.read()
- frame = cv2.flip(frame, 1) # Horizontally flip the frame
- if not frame_present:
- raise RuntimeError('Error reading frame from video stream')
- input_tensors = preprocess(frame, executor.input_binding_info)
- print("Running inference...")
- output_result = executor.run(input_tensors)
- detections = process_output(output_result)
- draw_bounding_boxes(frame, detections, resize_factor, labels)
- cv2.imshow('PyArmNN Object Detection Demo', frame)
- if cv2.waitKey(1) == 27:
- print('\nExit key activated. Closing video...')
- break
- video.release(), cv2.destroyAllWindows()
-
-
-if __name__ == '__main__':
- parser = ArgumentParser()
- parser.add_argument('--video_source', type=int, default=0,
- help='Device index to access video stream. Defaults to primary device camera at index 0')
- parser.add_argument('--model_file_path', required=True, type=str,
- help='Path to the Object Detection model to use')
- parser.add_argument('--model_name', required=True, type=str,
- help='The name of the model being used. Accepted options: ssd_mobilenet_v1, yolo_v3_tiny')
- parser.add_argument('--label_path', required=True, type=str,
- help='Path to the labelset for the provided model file')
- parser.add_argument('--preferred_backends', type=str, nargs='+', default=['CpuAcc', 'CpuRef'],
- help='Takes the preferred backends in preference order, separated by whitespace, '
- 'for example: CpuAcc GpuAcc CpuRef. Accepted options: [CpuAcc, CpuRef, GpuAcc]. '
- 'Defaults to [CpuAcc, CpuRef]')
- args = parser.parse_args()
- main(args)
+# Copyright © 2020 Arm Ltd and Contributors. All rights reserved. +# SPDX-License-Identifier: MIT + +""" +Object detection demo that takes a video stream from a device, runs inference +on each frame producing bounding boxes and labels around detected objects, +and displays a window with the latest processed frame. +""" + +import os +import sys +script_dir = os.path.dirname(__file__) +sys.path.insert(1, os.path.join(script_dir, '..', 'common')) + +import cv2 +from argparse import ArgumentParser + +from ssd import ssd_processing, ssd_resize_factor +from yolo import yolo_processing, yolo_resize_factor +from utils import dict_labels +from cv_utils import init_video_stream_capture, preprocess, draw_bounding_boxes +from network_executor import ArmnnNetworkExecutor + + +def get_model_processing(model_name: str, video: cv2.VideoCapture, input_binding_info: tuple): + """ + Gets model-specific information such as model labels and decoding and processing functions. + The user can include their own network and functions by adding another statement. + + Args: + model_name: Name of type of supported model. + video: Video capture object, contains information about data source. + input_binding_info: Contains shape of model input layer, used for scaling bounding boxes. + + Returns: + Model labels, decoding and processing functions. + """ + if model_name == 'ssd_mobilenet_v1': + return ssd_processing, ssd_resize_factor(video) + elif model_name == 'yolo_v3_tiny': + return yolo_processing, yolo_resize_factor(video, input_binding_info) + else: + raise ValueError(f'{model_name} is not a valid model name') + + +def main(args): + video = init_video_stream_capture(args.video_source) + executor = ArmnnNetworkExecutor(args.model_file_path, args.preferred_backends) + + model_name = args.model_name + process_output, resize_factor = get_model_processing(args.model_name, video, executor.input_binding_info) + labels = dict_labels(args.label_path, include_rgb=True) + + while True: + frame_present, frame = video.read() + frame = cv2.flip(frame, 1) # Horizontally flip the frame + if not frame_present: + raise RuntimeError('Error reading frame from video stream') + + if model_name == "ssd_mobilenet_v1": + input_tensors = preprocess(frame, executor.input_binding_info, True) + else: + input_tensors = preprocess(frame, executor.input_binding_info, False) + print("Running inference...") + output_result = executor.run(input_tensors) + detections = process_output(output_result) + draw_bounding_boxes(frame, detections, resize_factor, labels) + cv2.imshow('PyArmNN Object Detection Demo', frame) + if cv2.waitKey(1) == 27: + print('\nExit key activated. Closing video...') + break + video.release(), cv2.destroyAllWindows() + + +if __name__ == '__main__': + parser = ArgumentParser() + parser.add_argument('--video_source', type=int, default=0, + help='Device index to access video stream. Defaults to primary device camera at index 0') + parser.add_argument('--model_file_path', required=True, type=str, + help='Path to the Object Detection model to use') + parser.add_argument('--model_name', required=True, type=str, + help='The name of the model being used. Accepted options: ssd_mobilenet_v1, yolo_v3_tiny') + parser.add_argument('--label_path', required=True, type=str, + help='Path to the labelset for the provided model file') + parser.add_argument('--preferred_backends', type=str, nargs='+', default=['CpuAcc', 'CpuRef'], + help='Takes the preferred backends in preference order, separated by whitespace, ' + 'for example: CpuAcc GpuAcc CpuRef. Accepted options: [CpuAcc, CpuRef, GpuAcc]. ' + 'Defaults to [CpuAcc, CpuRef]') + args = parser.parse_args() + main(args) |