mirror of https://github.com/vladmandic/human
64 lines
2.0 KiB
TypeScript
64 lines
2.0 KiB
TypeScript
/**
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* Age model implementation
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*
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* Based on: [**SSR-Net**](https://github.com/shamangary/SSR-Net)
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*
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* Obsolete and replaced by `faceres` that performs age/gender/descriptor analysis
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*/
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import { log, join, now } from '../util/util';
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import * as tf from '../../dist/tfjs.esm.js';
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import type { Config } from '../config';
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import type { GraphModel, Tensor } from '../tfjs/types';
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import { env } from '../util/env';
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let model: GraphModel | null;
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let last = { age: 0 };
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let lastTime = 0;
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let skipped = Number.MAX_SAFE_INTEGER;
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// eslint-disable-next-line @typescript-eslint/no-explicit-any
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export async function load(config: Config | any) {
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if (env.initial) model = null;
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if (!model) {
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model = await tf.loadGraphModel(join(config.modelBasePath, config.face.age.modelPath)) as unknown as GraphModel;
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if (!model || !model['modelUrl']) log('load model failed:', config.face.age.modelPath);
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else if (config.debug) log('load model:', model['modelUrl']);
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} else {
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if (config.debug) log('cached model:', model['modelUrl']);
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}
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return model;
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}
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// eslint-disable-next-line @typescript-eslint/no-explicit-any
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export async function predict(image: Tensor, config: Config | any) {
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if (!model) return null;
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if ((skipped < config.face.age.skipFrames) && ((config.face.age.skipTime || 0) <= (now() - lastTime)) && config.skipFrame && last.age && (last.age > 0)) {
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skipped++;
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return last;
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}
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skipped = 0;
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return new Promise(async (resolve) => {
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if (!model?.inputs || !model.inputs[0] || !model.inputs[0].shape) return;
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const resize = tf.image.resizeBilinear(image, [model.inputs[0].shape[2], model.inputs[0].shape[1]], false);
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const enhance = tf.mul(resize, [255.0]);
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tf.dispose(resize);
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let ageT;
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const obj = { age: 0 };
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if (config.face.age.enabled) ageT = await model.predict(enhance);
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lastTime = now();
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tf.dispose(enhance);
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if (ageT) {
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const data = await ageT.data();
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obj.age = Math.trunc(10 * data[0]) / 10;
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}
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tf.dispose(ageT);
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last = obj;
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resolve(obj);
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});
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}
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