Object detection from aerial view in Drone Programming - Mini Project: Build & Apply

Object detection from aerial view

📖 Scenario: You are programming a drone to detect objects from an aerial view. The drone captures images and identifies objects by their color codes.

🎯 Goal: Build a simple program that stores detected objects with their color codes, sets a detection threshold, filters objects based on this threshold, and prints the filtered objects.

📋 What You'll Learn

Create a dictionary with object names and their color codes

Add a detection threshold variable

Use a dictionary comprehension to filter objects with color codes above the threshold

Print the filtered dictionary

💡 Why This Matters

🌍 Real World

Drones use object detection to identify cars, trees, buildings, and people from above, helping in mapping, surveillance, and rescue operations.

💼 Career

Understanding how to filter and process detected objects is important for drone software developers and engineers working on aerial imaging and autonomous navigation.

1

DATA SETUP: Create detected objects dictionary

Create a dictionary called detected_objects with these exact entries: 'car': 120, 'tree': 80, 'building': 150, 'person': 60, 'road': 100

Drone Programming

# Create the detected_objects dictionary with given entries
# Your code here

Need a hint?

Use curly braces {} to create a dictionary with keys and values separated by colons.

2

CONFIGURATION: Set detection threshold

Create a variable called detection_threshold and set it to 90

Drone Programming

detected_objects = {'car': 120, 'tree': 80, 'building': 150, 'person': 60, 'road': 100}
# Set detection_threshold to 90
# Your code here

Need a hint?

Just assign the number 90 to the variable detection_threshold.

3

CORE LOGIC: Filter objects above threshold

Create a new dictionary called filtered_objects using dictionary comprehension that includes only items from detected_objects where the color code is greater than detection_threshold

Drone Programming

detected_objects = {'car': 120, 'tree': 80, 'building': 150, 'person': 60, 'road': 100}
detection_threshold = 90
# Create filtered_objects dictionary with comprehension
# Your code here

Need a hint?

Use dictionary comprehension with for obj, code in detected_objects.items() and an if condition.

4

OUTPUT: Print filtered objects

Write a print statement to display the filtered_objects dictionary

Drone Programming

detected_objects = {'car': 120, 'tree': 80, 'building': 150, 'person': 60, 'road': 100}
detection_threshold = 90
filtered_objects = {obj: code for obj, code in detected_objects.items() if code > detection_threshold}
# Print filtered_objects
# Your code here

Need a hint?

Use print(filtered_objects) to show the filtered dictionary.