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freeCodeCamp

Building a Vision Transformer from Scratch - Implementation Tutorial

via freeCodeCamp

Overview

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Learn how to build a Vision Transformer (ViT) from scratch in this hour-long tutorial that explores the revolutionary application of self-attention mechanisms in computer vision. Master key concepts including CLIP and SigLIP models, image preprocessing techniques, patch and position embeddings, multi-head attention, and MLP layers. Follow along with hands-on implementation using provided code in Google Colab to gain practical experience in constructing a complete Vision Transformer architecture. Visualize embeddings and understand how AI models process visual data through detailed explanations and step-by-step demonstrations. Progress from fundamental concepts to advanced implementation, concluding with a comprehensive recap that reinforces the entire development process.

Syllabus

0:00:00 Intro to Vision Transformer
0:03:48 CLIP Model
0:08:16 SigLIP vs CLIP
0:12:09 Image Preprocessing
0:15:32 Patch Embeddings
0:20:48 Position Embeddings
0:23:51 Embeddings Visualization
0:26:11 Embeddings Implementation
0:32:03 Multi-Head Attention
0:46:19 MLP Layers
0:49:18 Assembling the Full Vision Transformer
0:59:36 Recap

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