Lesson 3 · Computer Vision
Object Detection
8 min
You'll be able to
- Understand the detection task: classes + bounding boxes
- Distinguish detection from classification
- Describe modern detection families
Object detection finds every object in an image, identifies its class, and draws a bounding box around it. Systems like YOLO do this in a single pass, making them fast enough for real-time video.
Detection powers self-driving cars, surveillance, medical imaging, and retail — anywhere knowing where an object is matters.
Challenge
Count the cars
Describe how a detection system could count cars in a parking lot from a drone image, and one challenge it would face.
Knowledge Check
Object detection
Object detection outputs, per object, a class and:
Detection is the same task as image classification.
Answer all questions to submit.