Overview
Realtime face emotion recognition using PyTorch, OpenCV and webcam inference. This reusable page template includes editable explanation sections, result screenshots, Python code blocks, a YouTube video link, and a download-code button.
data/tutorials.ts. Change the title, text, images, Python code, YouTube link, and download link there.What you will learn
- Load a PyTorch emotion model
- Detect and crop face regions
- Run real-time inference
- Display emotion labels on webcam frames
Suggested tutorial flow
Concept and motivation
Explain the problem, inputs, outputs and why the tutorial is useful.
Environment and files
Mention required Python packages, dataset files, model weights and folder structure.
Implementation walkthrough
Explain code step by step with one or more Python code blocks.
Results and improvements
Add screenshots, output discussion, common errors and future improvements.
Text explanation template
Introduction
This tutorial explains Face Emotion Recognition (PyTorch) in a practical AI Code School style. It is designed as a written companion to your YouTube video and a place where students can find code, screenshots, notes and downloads.
Later you can replace this sample text with your full theory, project motivation, dataset description and step-by-step teaching explanation.
Required libraries and setup
Use this section for installation commands, package versions, folder structure and model/download requirements. Keep it beginner friendly so learners can reproduce the tutorial.
- Python 3.10 or later
- OpenCV, NumPy and supporting packages
- PyTorch or TensorFlow if the tutorial uses deep learning
- Input images, dataset, trained model or notebook files
Step-by-step implementation notes
Explain your code in the same order as the video. Start with imports and setup, then preprocessing, model loading, inference, result visualization and troubleshooting.
- Load a PyTorch emotion model
- Detect and crop face regions
- Run real-time inference
- Display emotion labels on webcam frames
Results and discussion
Replace the placeholder result images with your own screenshots, model outputs, graphs, confusion matrices or webcam/video snapshots. Add a short explanation under each image so the page becomes useful even without watching the video.
How to modify this tutorial later
To update this page, open data/tutorials.ts and change the textSections, resultImages, codeBlocks, videoUrl and download fields. To add new screenshots, place images under public/images/tutorials/results/ and reference them in the resultImages array.
Images, screenshots and results
Add your result screenshots, graphs, model outputs, detected objects, confusion matrices, or interface snapshots here.
Python code explanation
Use one or more code blocks. After each block, explain what the code does in simple teaching language.
Realtime webcam loop
import cv2
import torch
emotion_labels = ["angry", "happy", "neutral", "sad", "surprise"]
model = torch.load("emotion_model.pt", map_location="cpu")
model.eval()
cap = cv2.VideoCapture(0)
while True:
ok, frame = cap.read()
if not ok:
break
# TODO: detect face, crop, preprocess and convert to tensor
# with torch.no_grad():
# logits = model(face_tensor)
# label = emotion_labels[int(torch.argmax(logits))]
cv2.imshow("Face Emotion Recognition", frame)
if cv2.waitKey(1) == 27:
break
cap.release()
cv2.destroyAllWindows()This code shows the standard webcam inference structure. Later, paste your real face detection and PyTorch preprocessing code here.
Download source code
Use this area to provide the complete source code, GitHub repository, Google Drive ZIP, notebook, dataset, or premium download link.
Download Sample Source Code
