Computer vision is a branch of artificial intelligence focused on teaching machines to interpret and understand images and video the way a human eye and brain do — recognising objects, faces, text, and scenes rather than just seeing a grid of pixel values.
Where It Shows Up Day-to-Day
- Facial recognition, used to unlock phones or tag people in photos
- Image search, letting you find photos by what's actually depicted in them
- Optical character recognition (OCR), pulling text out of scanned documents or images
- Quality control on manufacturing lines, spotting defects automatically
- Self-driving car systems, reading the road and surrounding traffic
Relevance for Website Owners
- AI-generated alt text — automatically describing images for accessibility and SEO
- Smarter image search on e-commerce sites, letting shoppers search visually
- Automated content moderation, flagging inappropriate images
- Product tagging, auto-categorising photos in an online store
The Underlying Technology
Most modern computer vision systems rely on convolutional neural networks — a type of deep learning model trained on very large sets of labelled images, learning to recognise patterns like edges, shapes, and textures, then combining that understanding into recognising complete objects and scenes.
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