🔍 About This Code Showcase
This curated code snippet demonstrates how the AI Avatar Hairstyle Generator performs precise hair detection, style transfer, and natural hair blending for avatar creation.
Full deployment scripts, API integrations, and proprietary details are omitted for clarity and security. This showcase highlights the core hair analysis and styling transformation algorithms.
💇 Core Algorithm: Hair Style Transfer Engine
The foundation of the AI Avatar Hairstyle Generator is its ability to detect hair regions, analyze facial structure, and seamlessly apply new hairstyles while maintaining natural appearance:
import { FaceLandmarker } from '@mediapipe/tasks-vision';
import { HairStyleLibrary } from './hair-styles';
interface HairRegion {
boundaries: Point[];
hairType: 'straight' | 'wavy' | 'curly' | 'coily';
density: number;
color: string;
faceCompatibility: number;
}
class HairStyleProcessor {
private faceLandmarker: FaceLandmarker;
private hairLibrary: HairStyleLibrary;
private canvas: HTMLCanvasElement;
private styleTemplates = {
oval: ['long_layers', 'bob', 'pixie', 'beach_waves'],
round: ['long_straight', 'asymmetrical', 'side_swept'],
square: ['soft_waves', 'layered_bob', 'curly_volume'],
heart: ['chin_length', 'full_bangs', 'textured_lob']
};
async generateHairstyleVariations(imageFile: File): Promise<string[]> {
"""
Transform a single portrait with multiple AI-generated hairstyles.
Analyzes face shape and hair characteristics to recommend optimal styles.
Args:
imageFile: The input portrait photo
Returns:
Array of base64-encoded images with different hairstyles applied
"""
const originalImage = await this.loadImage(imageFile);
const faceAnalysis = await this.analyzeFaceShape(originalImage);
const hairRegion = await this.detectHairRegion(originalImage);
const recommendedStyles = this.getStyleRecommendations(faceAnalysis.shape);
const styledImages: string[] = [];
for (const styleName of recommendedStyles) {
const hairStyle = await this.hairLibrary.getStyle(styleName);
const styledImage = await this.applyHairStyle(
originalImage,
hairStyle,
hairRegion,
faceAnalysis
);
const enhancedImage = await this.enhanceNaturalAppearance(styledImage, hairRegion);
styledImages.push(enhancedImage);
}
return styledImages;
}
private async detectHairRegion(image: HTMLImageElement): Promise<HairRegion> {
const ctx = this.canvas.getContext('2d');
ctx.drawImage(image, 0, 0);
const imageData = ctx.getImageData(0, 0, image.width, image.height);
const pixels = imageData.data;
const hairBoundaries = this.findHairBoundaries(pixels, image.width, image.height);
const hairType = this.classifyHairTexture(hairBoundaries, pixels);
return {
boundaries: hairBoundaries,
hairType,
density: this.calculateHairDensity(hairBoundaries, pixels),
color: this.extractDominantHairColor(hairBoundaries, pixels),
faceCompatibility: 0.85
};
}
}
🎨 Advanced Hair Blending Pipeline
The hair styling requires sophisticated blending algorithms to ensure new hairstyles look natural and maintain proper lighting and shadows:
class HairBlendingEngine {
async applyHairStyle(
originalImage: HTMLImageElement,
hairStyle: HairStyleTemplate,
hairRegion: HairRegion,
faceAnalysis: FaceAnalysis
): Promise<string> {
"""
Apply a new hairstyle while preserving natural appearance and lighting.
Uses advanced blending techniques to integrate hair seamlessly.
"""
const scaledHairStyle = await this.scaleHairToFace(hairStyle, faceAnalysis);
const lightingAdjustedHair = await this.matchLighting(
scaledHairStyle,
originalImage,
hairRegion
);
const blendedResult = await this.performSeamlessBlend(
originalImage,
lightingAdjustedHair,
hairRegion
);
const enhancedHair = await this.addNaturalHighlights(
blendedResult,
faceAnalysis.lightingDirection
);
return this.canvas.toDataURL();
}
private matchLighting(
hairStyle: ImageData,
originalImage: HTMLImageElement,
hairRegion: HairRegion
): ImageData {
"""
Analyze lighting in the original photo and adjust new hair accordingly.
This ensures the hairstyle looks like it belongs in the scene.
"""
const ambientLight = this.calculateAmbientLighting(originalImage, hairRegion);
const lightDirection = this.detectLightDirection(originalImage);
const adjustedHair = this.adjustHairLighting(
hairStyle,
ambientLight,
lightDirection
);
return adjustedHair;
}
private performSeamlessBlend(
original: HTMLImageElement,
newHair: ImageData,
hairRegion: HairRegion
): ImageData {
const ctx = this.canvas.getContext('2d');
const blendMask = this.createHairBlendMask(hairRegion.boundaries);
const blendedPixels = this.poissonBlend(
original,
newHair,
blendMask,
'multiply'
);
return blendedPixels;
}
private addNaturalHighlights(
blendedImage: ImageData,
lightDirection: Vector3D
): ImageData {
const highlightIntensity = 0.15;
const highlightMap = this.calculateHairHighlights(blendedImage, lightDirection);
return this.applyHighlightMap(blendedImage, highlightMap, highlightIntensity);
}
}