Snippets Collections
# Imports
import os
import sys
import zipfile
from pathlib import Path

import numpy as np
from monai.transforms import LoadImage
from openvino.inference_engine import IECore

sys.path.append("../utils")
from models.custom_segmentation import SegmentationModel
from notebook_utils import benchmark_model, download_file, show_live_inference

# Settings
# The directory that contains the IR model (xml and bin) files
MODEL_PATH = "pretrained_model/quantized_unet_kits19.xml"
# Uncomment the next line to use the FP16 model instead of the quantized model
# MODEL_PATH = "pretrained_model/unet_kits19.xml"

# Benchmark Model Performance
ie = IECore()
# By default, benchmark on MULTI:CPU,GPU if a GPU is available, otherwise on CPU.
device = "MULTI:CPU,GPU" if "GPU" in ie.available_devices else "CPU"
# Uncomment one of the options below to benchmark on other devices
# device = "GPU"
# device = "CPU"
# device = "AUTO"

# Benchmark model
benchmark_model(model_path=MODEL_PATH, device=device, seconds=15)

# Download and Prepare Data
# Directory that contains the CT scan data. This directory should contain subdirectories
# case_00XXX where XXX is between 000 and 299
BASEDIR = Path("kits19_frames_1")
# The CT scan case number. For example: 16 for data from the case_00016 directory
# Currently only 117 is supported
CASE = 117

case_path = BASEDIR / f"case_{CASE:05d}"

if not case_path.exists():
    filename = download_file(
        f"https://storage.openvinotoolkit.org/data/test_data/openvino_notebooks/kits19/case_{CASE:05d}.zip"
    )
    with zipfile.ZipFile(filename, "r") as zip_ref:
        zip_ref.extractall(path=BASEDIR)
    os.remove(filename)  # remove zipfile
    print(f"Downloaded and extracted data for case_{CASE:05d}")
else:
    print(f"Data for case_{CASE:05d} exists")

# Load Model and List of Image Files
ie = IECore()
segmentation_model = SegmentationModel(
    ie=ie, model_path=Path(MODEL_PATH), sigmoid=True, rotate_and_flip=True
)
image_paths = sorted(case_path.glob("imaging_frames/*jpg"))

print(f"{case_path.name}, {len(image_paths)} images")

# Show Inference
# Possible options for device include "CPU", "GPU", "AUTO", "MULTI"
device = "MULTI:CPU,GPU" if "GPU" in ie.available_devices else "CPU"
reader = LoadImage(image_only=True, dtype=np.uint8)

show_live_inference(
    ie=ie, image_paths=image_paths, model=segmentation_model, device=device, reader=reader
)
# Preparation
model_name = "mobilenet-v2-pytorch"

# Imports
import json
import sys
from pathlib import Path

from IPython.display import Markdown, display
from openvino.runtime import Core

sys.path.append("../utils")
from notebook_utils import DeviceNotFoundAlert, NotebookAlert

# Settings and Configuration
base_model_dir = Path("~/open_model_zoo_models").expanduser()
omz_cache_dir = Path("~/open_model_zoo_cache").expanduser()
precision = "FP16"

# Check if an iGPU is available on this system to use with Benchmark App
ie = Core()
gpu_available = "GPU" in ie.available_devices

print(
    f"base_model_dir: {base_model_dir}, omz_cache_dir: {omz_cache_dir}, gpu_availble: {gpu_available}"
)

# Download Model from Open Model Zoo
download_command = (
    f"omz_downloader --name {model_name} --output_dir {base_model_dir} --cache_dir {omz_cache_dir}"
)
display(Markdown(f"Download command: `{download_command}`"))
display(Markdown(f"Downloading {model_name}..."))
! $download_command

# Convert Model to OpenVINO IR format
convert_command = f"omz_converter --name {model_name} --precisions {precision} --download_dir {base_model_dir} --output_dir {base_model_dir}"
display(Markdown(f"Convert command: `{convert_command}`"))
display(Markdown(f"Converting {model_name}..."))

! $convert_command

# Get Model Information
model_info_output = %sx omz_info_dumper --name $model_name
model_info = json.loads(model_info_output.get_nlstr())

if len(model_info) > 1:
    NotebookAlert(
        f"There are multiple IR files for the {model_name} model. The first model in the "
        "omz_info_dumper output will be used for benchmarking. Change "
        "`selected_model_info` in the cell below to select a different model from the list.",
        "warning",
    )

model_info

selected_model_info = model_info[0]
model_path = (
    base_model_dir
    / Path(selected_model_info["subdirectory"])
    / Path(f"{precision}/{selected_model_info['name']}.xml")
)
print(model_path, "exists:", model_path.exists())

benchmark_command = f"benchmark_app -m {model_path} -t 15"
display(Markdown(f"Benchmark command: `{benchmark_command}`"))
display(Markdown(f"Benchmarking {model_name} on CPU with async inference for 15 seconds..."))

! $benchmark_command

# Benchmark with Different Settings
def benchmark_model(model_xml, device="CPU", seconds=60, api="async", batch=1):
    ie = Core()
    model_path = Path(model_xml)
    if ("GPU" in device) and ("GPU" not in ie.available_devices):
        DeviceNotFoundAlert("GPU")
    else:
        benchmark_command = f"benchmark_app -m {model_path} -d {device} -t {seconds} -api {api} -b {batch}"
        display(Markdown(f"**Benchmark {model_path.name} with {device} for {seconds} seconds with {api} inference**"))
        display(Markdown(f"Benchmark command: `{benchmark_command}`"))

        benchmark_output = %sx $benchmark_command
        print("command ended")
        benchmark_result = [line for line in benchmark_output
                            if not (line.startswith(r"[") or line.startswith("  ") or line == "")]
        print("\n".join(benchmark_result))

ie = Core()

# Show devices available for OpenVINO Inference Engine
for device in ie.available_devices:
    device_name = ie.get_property(device, "FULL_DEVICE_NAME")
    print(f"{device}: {device_name}")

benchmark_model(model_path, device="CPU", seconds=15, api="async")

benchmark_model(model_path, device="AUTO", seconds=15, api="async")

benchmark_model(model_path, device="GPU", seconds=15, api="async")

benchmark_model(model_path, device="MULTI:CPU,GPU", seconds=15, api="async")
# Imports
import os
import time

import cv2
import matplotlib.pyplot as plt
import numpy as np
import paddlehub as hub
from IPython.display import Markdown, display
from PIL import Image
from openvino.runtime import Core
from paddle.static import InputSpec
from scipy.special import softmax

# Settings
IMAGE_FILENAME = "coco_close.png"

MODEL_NAME = "mobilenet_v3_large_imagenet_ssld"
hub.config.server = "https://paddlepaddle.org.cn/paddlehub"

# Show Inference on PaddlePaddle Model
classifier = hub.Module(name=MODEL_NAME)

# Load image in BGR format, as specified in model documentation
image = cv2.imread(filename=IMAGE_FILENAME)
plt.imshow(cv2.cvtColor(image, cv2.COLOR_BGR2RGB))
result = classifier.classification(images=[image], top_k=3)
for class_name, softmax_probability in result[0].items():
    print(f"{class_name}, {softmax_probability:.5f}")

from mobilenet_v3_large_imagenet_ssld.data_feed import process_image

pil_image = Image.open(IMAGE_FILENAME)
processed_image = process_image(pil_image)
print(f"Processed image shape: {processed_image.shape}")
# Processed image is in (C,H,W) format, convert to (H,W,C) to show the image
plt.imshow(np.transpose(processed_image, (1, 2, 0)))

# Preparation
input_shape = list(classifier.cpu_predictor.get_input_tensor_shape().values())
print("input shape:", input_shape)
print("mean:", classifier.get_pretrained_images_mean())
print("std:", classifier.get_pretrained_images_std())

# Convert PaddlePaddle Model to ONNX
target_height, target_width = next(iter(input_shape))[2:]
x_spec = InputSpec([1, 3, target_height, target_width], "float32", "x")
print(
    "Exporting PaddlePaddle model to ONNX with target_height "
    f"{target_height} and target_width {target_width}"
)
classifier.export_onnx_model(".", input_spec=[x_spec], opset_version=11)

# Convert ONNX model to OpenVINO IR Format
model_xml = f"{MODEL_NAME}.xml"
if not os.path.exists(model_xml):
    mo_command = f'mo --input_model {MODEL_NAME}.onnx --input_shape "[1,3,{target_height},{target_width}]"'
    display(Markdown(f"Model Optimizer command to convert the ONNX model to IR: `{mo_command}`"))
    display(Markdown("_Converting model to IR. This may take a few minutes..._"))
    ! $mo_command
else:
    print(f"{model_xml} already exists.")

# Show Inference on OpenVINO Model
# Load Inference Engine and IR model
ie = Core()
model = ie.read_model(model=f"{MODEL_NAME}.xml", weights=f"{MODEL_NAME}.bin")
compiled_model = ie.compile_model(model=model, device_name="CPU")

# Get model output
output_layer = compiled_model.output(0)

# Read, show, and preprocess input image
# See the "Show Inference on PaddlePaddle Model" section for source of process_image
image = Image.open(IMAGE_FILENAME)
plt.imshow(image)
input_image = process_image(image)[None,]

# Do inference
ie_result = compiled_model([input_image])[output_layer][0]

# Compute softmax probabilities for the inference result and find the top three values
softmax_result = softmax(ie_result)
top_indices = np.argsort(softmax_result)[-3:][::-1]
top_softmax = softmax_result[top_indices]

# Convert the inference results to class names, using the same labels as the PaddlePaddle classifier
for index, softmax_probability in zip(top_indices, top_softmax):
    print(f"{classifier.label_list[index]}, {softmax_probability:.5f}")

# Timing and Comparison
num_images = 50

# PaddlePaddle's classification method expects a BGR numpy array
image = cv2.imread(filename=IMAGE_FILENAME)

# The process_image function expects a PIL image
pil_image = Image.open(fp=IMAGE_FILENAME)

# Show CPU information
ie = Core()
print(f"CPU: {ie.get_property(device_name='CPU', name='FULL_DEVICE_NAME')}")

# Show inference speed on PaddlePaddle model
start = time.perf_counter()
for _ in range(num_images):
    result = classifier.classification(images=[image], top_k=3)
end = time.perf_counter()
time_ir = end - start
print(
    f"PaddlePaddle model on CPU: {time_ir/num_images:.4f} "
    f"seconds per image, FPS: {num_images/time_ir:.2f}\n"
)
print("PaddlePaddle result:")
for class_name, softmax_probability in result[0].items():
    print(f"{class_name}, {softmax_probability:.5f}")
plt.imshow(cv2.cvtColor(image, cv2.COLOR_BGR2RGB));

# Show inference speed on OpenVINO IR model
compiled_model = ie.compile_model(model=model, device_name="CPU")
output_layer = compiled_model.output(0)


start = time.perf_counter()
input_image = process_image(pil_image)[None,]
for _ in range(num_images):
    ie_result = compiled_model([input_image])[output_layer][0]
    result_index = np.argmax(ie_result)
    class_name = classifier.label_list[np.argmax(ie_result)]
    softmax_result = softmax(ie_result)
    top_indices = np.argsort(softmax_result)[-3:][::-1]
    top_softmax = softmax_result[top_indices]

end = time.perf_counter()
time_ir = end - start

print(
    f"IR model in Inference Engine (CPU): {time_ir/num_images:.4f} "
    f"seconds per image, FPS: {num_images/time_ir:.2f}"
)
print()
print("OpenVINO result:")
for index, softmax_probability in zip(top_indices, top_softmax):
    print(f"{classifier.label_list[index]}, {softmax_probability:.5f}")
plt.imshow(cv2.cvtColor(image, cv2.COLOR_BGR2RGB));
# Imports
import sys
import time
from pathlib import Path

import cv2
import numpy as np
import torch
from IPython.display import Markdown, display
from fastseg import MobileV3Large
from openvino.runtime import Core

sys.path.append("../utils")
from notebook_utils import CityScapesSegmentation, segmentation_map_to_image, viz_result_image

# Settings
IMAGE_WIDTH = 1024  # Suggested values: 2048, 1024 or 512. The minimum width is 512.
# Set IMAGE_HEIGHT manually for custom input sizes. Minimum height is 512
IMAGE_HEIGHT = 1024 if IMAGE_WIDTH == 2048 else 512
DIRECTORY_NAME = "model"
BASE_MODEL_NAME = DIRECTORY_NAME + f"/fastseg{IMAGE_WIDTH}"

# Paths where PyTorch, ONNX and OpenVINO IR models will be stored
model_path = Path(BASE_MODEL_NAME).with_suffix(".pth")
onnx_path = model_path.with_suffix(".onnx")
ir_path = model_path.with_suffix(".xml")

# Download the Fastseg Model
print("Downloading the Fastseg model (if it has not been downloaded before)....")
model = MobileV3Large.from_pretrained().cpu().eval()
print("Loaded PyTorch Fastseg model")

# Save the model
model_path.parent.mkdir(exist_ok=True)
torch.save(model.state_dict(), str(model_path))
print(f"Model saved at {model_path}")

# Convert PyTorch model to ONNX
if not onnx_path.exists():
    dummy_input = torch.randn(1, 3, IMAGE_HEIGHT, IMAGE_WIDTH)

    # For the Fastseg model, setting do_constant_folding to False is required
    # for PyTorch>1.5.1
    torch.onnx.export(
        model,
        dummy_input,
        onnx_path,
        opset_version=11,
        do_constant_folding=False,
    )
    print(f"ONNX model exported to {onnx_path}.")
else:
    print(f"ONNX model {onnx_path} already exists.")

# Convert ONNX Model to OpenVINO IR Format
# Construct the command for Model Optimizer
mo_command = f"""mo
                 --input_model "{onnx_path}"
                 --input_shape "[1,3, {IMAGE_HEIGHT}, {IMAGE_WIDTH}]"
                 --mean_values="[123.675, 116.28 , 103.53]"
                 --scale_values="[58.395, 57.12 , 57.375]"
                 --data_type FP16
                 --output_dir "{model_path.parent}"
                 """
mo_command = " ".join(mo_command.split())
print("Model Optimizer command to convert the ONNX model to OpenVINO:")
display(Markdown(f"`{mo_command}`"))

if not ir_path.exists():
    print("Exporting ONNX model to IR... This may take a few minutes.")
    mo_result = %sx $mo_command
    print("\n".join(mo_result))
else:
    print(f"IR model {ir_path} already exists.")

# Show results: Load and Preprocess an Input Image
def normalize(image: np.ndarray) -> np.ndarray:
    """
    Normalize the image to the given mean and standard deviation
    for CityScapes models.
    """
    image = image.astype(np.float32)
    mean = (0.485, 0.456, 0.406)
    std = (0.229, 0.224, 0.225)
    image /= 255.0
    image -= mean
    image /= std
    return image

image_filename = "data/street.jpg"
image = cv2.cvtColor(cv2.imread(image_filename), cv2.COLOR_BGR2RGB)

resized_image = cv2.resize(image, (IMAGE_WIDTH, IMAGE_HEIGHT))
normalized_image = normalize(resized_image)

# Convert the resized images to network input shape
input_image = np.expand_dims(np.transpose(resized_image, (2, 0, 1)), 0)
normalized_input_image = np.expand_dims(np.transpose(normalized_image, (2, 0, 1)), 0)

# ONNX Model in Inference Engine
# Load network to Inference Engine
ie = Core()
model_onnx = ie.read_model(model=onnx_path)
compiled_model_onnx = ie.compile_model(model=model_onnx, device_name="CPU")

output_layer_onnx = compiled_model_onnx.output(0)

# Run inference on the input image
res_onnx = compiled_model_onnx([normalized_input_image])[output_layer_onnx]

# Convert network result to segmentation map and display the result
result_mask_onnx = np.squeeze(np.argmax(res_onnx, axis=1)).astype(np.uint8)
viz_result_image(
    image,
    segmentation_map_to_image(result_mask_onnx, CityScapesSegmentation.get_colormap()),
    resize=True,
)

# IR Model in Inference Engine
# Load the network in Inference Engine
ie = Core()
model_ir = ie.read_model(model=ir_path)
compiled_model_ir = ie.compile_model(model=model_ir, device_name="CPU")

# Get input and output layers
output_layer_ir = compiled_model_ir.output(0)

# Run inference on the input image
res_ir = compiled_model_ir([input_image])[output_layer_ir]

result_mask_ir = np.squeeze(np.argmax(res_ir, axis=1)).astype(np.uint8)
viz_result_image(
    image,
    segmentation_map_to_image(result=result_mask_ir, colormap=CityScapesSegmentation.get_colormap()),
    resize=True,
)

# PyTorch Comparison
with torch.no_grad():
    result_torch = model(torch.as_tensor(normalized_input_image).float())

result_mask_torch = torch.argmax(result_torch, dim=1).squeeze(0).numpy().astype(np.uint8)
viz_result_image(
    image,
    segmentation_map_to_image(result=result_mask_torch, colormap=CityScapesSegmentation.get_colormap()),
    resize=True,
)

# Performance Comparison
num_images = 20

start = time.perf_counter()
for _ in range(num_images):
    compiled_model_onnx([normalized_input_image])
end = time.perf_counter()
time_onnx = end - start
print(
    f"ONNX model in Inference Engine/CPU: {time_onnx/num_images:.3f} "
    f"seconds per image, FPS: {num_images/time_onnx:.2f}"
)

start = time.perf_counter()
for _ in range(num_images):
    compiled_model_ir([input_image])
end = time.perf_counter()
time_ir = end - start
print(
    f"IR model in Inference Engine/CPU: {time_ir/num_images:.3f} "
    f"seconds per image, FPS: {num_images/time_ir:.2f}"
)

with torch.no_grad():
    start = time.perf_counter()
    for _ in range(num_images):
        model(torch.as_tensor(input_image).float())
    end = time.perf_counter()
    time_torch = end - start
print(
    f"PyTorch model on CPU: {time_torch/num_images:.3f} seconds per image, "
    f"FPS: {num_images/time_torch:.2f}"
)

if "GPU" in ie.available_devices:
    compiled_model_onnx_gpu = ie.compile_model(model=model_onnx, device_name="GPU")
    start = time.perf_counter()
    for _ in range(num_images):
        compiled_model_onnx_gpu([input_image])
    end = time.perf_counter()
    time_onnx_gpu = end - start
    print(
        f"ONNX model in Inference Engine/GPU: {time_onnx_gpu/num_images:.3f} "
        f"seconds per image, FPS: {num_images/time_onnx_gpu:.2f}"
    )

    compiled_model_ir_gpu = ie.compile_model(model=model_ir, device_name="GPU")
    start = time.perf_counter()
    for _ in range(num_images):
        compiled_model_ir_gpu([input_image])
    end = time.perf_counter()
    time_ir_gpu = end - start
    print(
        f"IR model in Inference Engine/GPU: {time_ir_gpu/num_images:.3f} "
        f"seconds per image, FPS: {num_images/time_ir_gpu:.2f}"
    )

# Show Device Information
devices = ie.available_devices
for device in devices:
    device_name = ie.get_property(device_name=device, name="FULL_DEVICE_NAME")
    print(f"{device}: {device_name}")
# Imports
import time
from pathlib import Path

import cv2
import matplotlib.pyplot as plt
import numpy as np
from IPython.display import Markdown
from openvino.runtime import Core

# Settings
# The paths of the source and converted models
model_path = Path("model/v3-small_224_1.0_float.pb")
ir_path = Path(model_path).with_suffix(".xml")

# Convert TensorFlow Model to OpenVINO IR Format
# Construct the command for Model Optimizer
mo_command = f"""mo
                 --input_model "{model_path}" 
                 --input_shape "[1,224,224,3]" 
                 --mean_values="[127.5,127.5,127.5]"
                 --scale_values="[127.5]" 
                 --data_type FP16 
                 --output_dir "{model_path.parent}"
                 """
mo_command = " ".join(mo_command.split())
print("Model Optimizer command to convert TensorFlow to OpenVINO:")
display(Markdown(f"`{mo_command}`"))

# Run Model Optimizer if the IR model file does not exist
if not ir_path.exists():
    print("Exporting TensorFlow model to IR... This may take a few minutes.")
    ! $mo_command
else:
    print(f"IR model {ir_path} already exists.")

# Load the Model
ie = Core()
model = ie.read_model(model=ir_path, weights=ir_path.with_suffix(".bin"))
compiled_model = ie.compile_model(model=model, device_name="CPU")

# Get Model Information
input_key = compiled_model.input(0)
output_key = compiled_model.output(0)
network_input_shape = input_key.shape

# Load an Image
# The MobileNet network expects images in RGB format
image = cv2.cvtColor(cv2.imread(filename="data/coco.jpg"), code=cv2.COLOR_BGR2RGB)

# Resize image to network input image shape
resized_image = cv2.resize(src=image, dsize=(224, 224))

# Transpose image to network input shape
input_image = np.expand_dims(resized_image, 0)

plt.imshow(image);

# Do Inference
result = compiled_model([input_image])[output_key]
result_index = np.argmax(result)

# Convert the inference result to a class name.
imagenet_classes = open("utils/imagenet_2012.txt").read().splitlines()

# The model description states that for this model, class 0 is background,
# so we add background at the beginning of imagenet_classes
imagenet_classes = ['background'] + imagenet_classes

imagenet_classes[result_index]

# Timing
num_images = 1000

start = time.perf_counter()

for _ in range(num_images):
    compiled_model([input_image])

end = time.perf_counter()
time_ir = end - start

print(
    f"IR model in Inference Engine/CPU: {time_ir/num_images:.4f} "
    f"seconds per image, FPS: {num_images/time_ir:.2f}"
)
# Imports
import cv2
import matplotlib.pyplot as plt
import numpy as np
from openvino.runtime import Core

# Load the Model
ie = Core()

model = ie.read_model(model="model/horizontal-text-detection-0001.xml")
compiled_model = ie.compile_model(model=model, device_name="CPU")

input_layer_ir = compiled_model.input(0)
output_layer_ir = compiled_model.output("boxes")

# Load an Image
# Text detection models expects image in BGR format
image = cv2.imread("data/intel_rnb.jpg")

# N,C,H,W = batch size, number of channels, height, width
N, C, H, W = input_layer_ir.shape

# Resize image to meet network expected input sizes
resized_image = cv2.resize(image, (W, H))

# Reshape to network input shape
input_image = np.expand_dims(resized_image.transpose(2, 0, 1), 0)

plt.imshow(cv2.cvtColor(image, cv2.COLOR_BGR2RGB));

# Do Inference
# Create inference request
boxes = compiled_model([input_image])[output_layer_ir]

# Remove zero only boxes
boxes = boxes[~np.all(boxes == 0, axis=1)]

# Visualize Results
# For each detection, the description has the format: [x_min, y_min, x_max, y_max, conf]
# Image passed here is in BGR format with changed width and height. To display it in colors expected by matplotlib we use cvtColor function
def convert_result_to_image(bgr_image, resized_image, boxes, threshold=0.3, conf_labels=True):
    # Define colors for boxes and descriptions
    colors = {"red": (255, 0, 0), "green": (0, 255, 0)}

    # Fetch image shapes to calculate ratio
    (real_y, real_x), (resized_y, resized_x) = bgr_image.shape[:2], resized_image.shape[:2]
    ratio_x, ratio_y = real_x / resized_x, real_y / resized_y

    # Convert base image from bgr to rgb format
    rgb_image = cv2.cvtColor(bgr_image, cv2.COLOR_BGR2RGB)

    # Iterate through non-zero boxes
    for box in boxes:
        # Pick confidence factor from last place in array
        conf = box[-1]
        if conf > threshold:
            # Convert float to int and multiply corner position of each box by x and y ratio
            # In case that bounding box is found at the top of the image, 
            # we position upper box bar little lower to make it visible on image 
            (x_min, y_min, x_max, y_max) = [
                int(max(corner_position * ratio_y, 10)) if idx % 2 
                else int(corner_position * ratio_x)
                for idx, corner_position in enumerate(box[:-1])
            ]

            # Draw box based on position, parameters in rectangle function are: image, start_point, end_point, color, thickness
            rgb_image = cv2.rectangle(rgb_image, (x_min, y_min), (x_max, y_max), colors["green"], 3)

            # Add text to image based on position and confidence
            # Parameters in text function are: image, text, bottom-left_corner_textfield, font, font_scale, color, thickness, line_type
            if conf_labels:
                rgb_image = cv2.putText(
                    rgb_image,
                    f"{conf:.2f}",
                    (x_min, y_min - 10),
                    cv2.FONT_HERSHEY_SIMPLEX,
                    0.8,
                    colors["red"],
                    1,
                    cv2.LINE_AA,
                )

    return rgb_image

plt.figure(figsize=(10, 6))
plt.axis("off")
plt.imshow(convert_result_to_image(image, resized_image, boxes, conf_labels=False));
# Imports
import cv2
import matplotlib.pyplot as plt
import numpy as np
import sys
from openvino.runtime import Core

sys.path.append("../utils")
from notebook_utils import segmentation_map_to_image

# Load the Model
ie = Core()

model = ie.read_model(model="model/road-segmentation-adas-0001.xml")
compiled_model = ie.compile_model(model=model, device_name="CPU")

input_layer_ir = compiled_model.input(0)
output_layer_ir = compiled_model.output(0)

# Load an Image
# The segmentation network expects images in BGR format
image = cv2.imread("data/empty_road_mapillary.jpg")

rgb_image = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)
image_h, image_w, _ = image.shape

# N,C,H,W = batch size, number of channels, height, width
N, C, H, W = input_layer_ir.shape

# OpenCV resize expects the destination size as (width, height)
resized_image = cv2.resize(image, (W, H))

# reshape to network input shape
input_image = np.expand_dims(
    resized_image.transpose(2, 0, 1), 0
)  
plt.imshow(rgb_image)

# Run the inference
result = compiled_model([input_image])[output_layer_ir]

# Prepare data for visualization
segmentation_mask = np.argmax(result, axis=1)
plt.imshow(segmentation_mask.transpose(1, 2, 0))

# Prepare Data for Visualization
# Define colormap, each color represents a class
colormap = np.array([[68, 1, 84], [48, 103, 141], [53, 183, 120], [199, 216, 52]])

# Define the transparency of the segmentation mask on the photo
alpha = 0.3

# Use function from notebook_utils.py to transform mask to an RGB image
mask = segmentation_map_to_image(segmentation_mask, colormap)
resized_mask = cv2.resize(mask, (image_w, image_h))

# Create image with mask put on
image_with_mask = cv2.addWeighted(resized_mask, alpha, rgb_image, 1 - alpha, 0)

# Visualize data
# Define titles with images
data = {"Base Photo": rgb_image, "Segmentation": mask, "Masked Photo": image_with_mask}

# Create subplot to visualize images
fig, axs = plt.subplots(1, len(data.items()), figsize=(15, 10))

# Fill subplot
for ax, (name, image) in zip(axs, data.items()):
    ax.axis('off')
    ax.set_title(name)
    ax.imshow(image)

# Display image
plt.show(fig)
# Load Inference Engine and Show Info
from openvino.runtime import Core
ie = Core()

devices = ie.available_devices

for device in devices:
    device_name = ie.get_property(device_name=device, name="FULL_DEVICE_NAME")
    print(f"{device}: {device_name}")

# Loading a Model
from openvino.runtime import Core

ie = Core()
classification_model_xml = "model/classification.xml"

model = ie.read_model(model=classification_model_xml)
compiled_model = ie.compile_model(model=model, device_name="CPU")

from openvino.runtime import Core

ie = Core()
onnx_model_path = "model/segmentation.onnx"
model_onnx = ie.read_model(model=onnx_model_path)
compiled_model_onnx = ie.compile_model(model=model_onnx, device_name="CPU")

from openvino.offline_transformations import serialize

serialize(model=model_onnx, model_path="model/exported_onnx_model.xml", weights_path="model/exported_onnx_model.bin")

# Getting Information about a Model
from openvino.runtime import Core

ie = Core()
classification_model_xml = "model/classification.xml"
model = ie.read_model(model=classification_model_xml)
model.input(0).any_name

input_layer = model.input(0)

print(f"input precision: {input_layer.element_type}")
print(f"input shape: {input_layer.shape}")

from openvino.runtime import Core

ie = Core()
classification_model_xml = "model/classification.xml"
model = ie.read_model(model=classification_model_xml)
model.output(0).any_name

output_layer = model.output(0)
output_layer

print(f"output precision: {output_layer.element_type}")
print(f"output shape: {output_layer.shape}")

from openvino.runtime import Core

ie = Core()
classification_model_xml = "model/classification.xml"
model = ie.read_model(model=classification_model_xml)
compiled_model = ie.compile_model(model=model, device_name="CPU")
input_layer = compiled_model.input(0)
output_layer = compiled_model.output(0)

import cv2

image_filename = "data/coco_hollywood.jpg"
image = cv2.imread(image_filename)
image.shape

# N,C,H,W = batch size, number of channels, height, width
N, C, H, W = input_layer.shape
# OpenCV resize expects the destination size as (width, height)
resized_image = cv2.resize(src=image, dsize=(W, H))
resized_image.shape

import numpy as np

input_data = np.expand_dims(np.transpose(resized_image, (2, 0, 1)), 0).astype(np.float32)
input_data.shape

# Do Inference
result = compiled_model([input_data])[output_layer]

request = compiled_model.create_infer_request()
request.infer(inputs={input_layer.any_name: input_data})
result = request.get_output_tensor(output_layer.index).data

from openvino.runtime import Core, PartialShape

ie = Core()
segmentation_model_xml = "model/segmentation.xml"
segmentation_model = ie.read_model(model=segmentation_model_xml)
segmentation_input_layer = segmentation_model.input(0)
segmentation_output_layer = segmentation_model.output(0)

print("~~~~ ORIGINAL MODEL ~~~~")
print(f"input shape: {segmentation_input_layer.shape}")
print(f"output shape: {segmentation_output_layer.shape}")

new_shape = PartialShape([1, 3, 544, 544])
segmentation_model.reshape({segmentation_input_layer.any_name: new_shape})
segmentation_compiled_model = ie.compile_model(model=segmentation_model, device_name="CPU")
# help(segmentation_compiled_model)
print("~~~~ RESHAPED MODEL ~~~~")
print(f"model input shape: {segmentation_input_layer.shape}")
print(
    f"compiled_model input shape: "
    f"{segmentation_compiled_model.input(index=0).shape}"
)
print(f"compiled_model output shape: {segmentation_output_layer.shape}")

# Change Batch Size
from openvino.runtime import Core, PartialShape

ie = Core()
segmentation_model_xml = "model/segmentation.xml"
segmentation_model = ie.read_model(model=segmentation_model_xml)
segmentation_input_layer = segmentation_model.input(0)
segmentation_output_layer = segmentation_model.output(0)
new_shape = PartialShape([2, 3, 544, 544])
segmentation_model.reshape({segmentation_input_layer.any_name: new_shape})
segmentation_compiled_model = ie.compile_model(model=segmentation_model, device_name="CPU")

print(f"input shape: {segmentation_input_layer.shape}")
print(f"output shape: {segmentation_output_layer.shape}")

import numpy as np
from openvino.runtime import Core, PartialShape

ie = Core()
segmentation_model_xml = "model/segmentation.xml"
segmentation_model = ie.read_model(model=segmentation_model_xml)
segmentation_input_layer = segmentation_model.input(0)
segmentation_output_layer = segmentation_model.output(0)
new_shape = PartialShape([2, 3, 544, 544])
segmentation_model.reshape({segmentation_input_layer.any_name: new_shape})
segmentation_compiled_model = ie.compile_model(model=segmentation_model, device_name="CPU")
input_data = np.random.rand(2, 3, 544, 544)

output = segmentation_compiled_model([input_data])

print(f"input data shape: {input_data.shape}")
print(f"result data data shape: {segmentation_output_layer.shape}")

# Caching a Model
import time
from pathlib import Path

from openvino.runtime import Core, PartialShape

ie = Core()

device_name = "GPU"  # Model Caching is not available for CPU

if device_name in ie.available_devices and device_name != "CPU":
    cache_path = Path("model/model_cache")
    cache_path.mkdir(exist_ok=True)
    # Enable caching for Inference Engine. To disable caching set enable_caching = False
    enable_caching = True
    config_dict = {"CACHE_DIR": str(cache_path)} if enable_caching else {}

    classification_model_xml = "model/classification.xml"
    model = ie.read_model(model=classification_model_xml)

    start_time = time.perf_counter()
    compiled_model = ie.compile_model(model=model, device_name=device_name, config=config_dict)
    end_time = time.perf_counter()
    print(f"Loading the network to the {device_name} device took {end_time-start_time:.2f} seconds.")
else:
    print("Model caching is not available on CPU devices.")

if device_name in ie.available_devices and device_name != "CPU":
    del compiled_model
    start_time = time.perf_counter()
    compiled_model = ie.compile_model(model=model, device_name=device_name, config=config_dict)
    end_time = time.perf_counter()
    print(f"Loading the network to the {device_name} device took {end_time-start_time:.2f} seconds.")
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#python #openvino #openvino-notebook #ct-scan #healthcareai #unet
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#python #openvino #onnx #openvino-notebook #api #openvino-api

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