@vladmandic/face-api/src/ageGenderNet/extractParams.ts

FaceAPI: AI-powered Face Detection & Rotation Tracking, Face Description & Recognition, Age & Gender & Emotion Prediction for Browser and NodeJS using TensorFlow/JS

import { extractFCParamsFactory, extractWeightsFactory, ParamMapping } from '../common/index';
import { NetParams } from './types';

export function extractParams(weights: Float32Array): { params: NetParams, paramMappings: ParamMapping[] } {
  const paramMappings: ParamMapping[] = [];

  const {
    extractWeights,
    getRemainingWeights,
  } = extractWeightsFactory(weights);

  const extractFCParams = extractFCParamsFactory(extractWeights, paramMappings);

  const age = extractFCParams(512, 1, 'fc/age');
  const gender = extractFCParams(512, 2, 'fc/gender');

  if (getRemainingWeights().length !== 0) {
    throw new Error(`weights remaing after extract: ${getRemainingWeights().length}`);
  }

  return {
    paramMappings,
    params: { fc: { age, gender } },
  };
}