Computer Vision
Last Updated: July 29, 2026 | By Mihail Sebastian | AI Dictionary
The field of AI that lets machines interpret images and video, covering tasks from labeling a whole photo to locating every object inside it.
What is Computer Vision?
Computer vision is the field of AI that turns images and video into information a computer can act on: what is in a scene, where it is, and what is happening. It spans tasks from labeling a whole photo to tracking objects across video frames.
Modern computer vision is built on deep learning, especially convolutional neural networks, which learn visual features from labeled examples rather than hand-written rules. That shift is why vision systems now read medical scans, sort packages, and steer cars.
Types of Computer Vision Tasks
- Image recognition assigns a label to a whole image: this photo shows a cat, this X-ray shows a fracture.
- Object detection finds each object in an image and draws a bounding box around it, answering both what and where.
- Image segmentation classifies every pixel, separating a tumor from surrounding tissue or a pedestrian from the road behind them.
- Optical character recognition reads text out of images, from scanned contracts to license plates.
- Facial recognition matches a face against stored identities, the most tightly regulated task on this list.
Example of Computer Vision
A car’s driver-assistance system chains several vision tasks together. A forward camera streams frames to an object detector that locates vehicles, pedestrians, and cyclists; a segmentation model traces the lane markings; an OCR component reads speed-limit signs.
Each model turns raw pixels into a structured fact, such as “pedestrian, 12 meters ahead, moving left,” and the planning software acts on it. None of these components sees the way a person does. Each computes patterns learned from millions of labeled road images, and each fails in ways a human driver would not, which is why such systems are tested against rare edge cases: unusual clothing, faded signage, low sun.
Related AI terms: Image Recognition · Object Detection · Facial Recognition · Optical Character Recognition · Convolutional Neural Network · Voxel
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Mihail Sebastian — Writes about AI governance, regulation, and the technology behind them. Placeholder bio — replace with a real credential line. About