face-api/src/resizeResults.ts

35 lines
1.5 KiB
TypeScript

import { Dimensions, IDimensions } from './classes/index';
import { FaceDetection } from './classes/FaceDetection';
import { FaceLandmarks } from './classes/FaceLandmarks';
import { extendWithFaceDetection, isWithFaceDetection } from './factories/WithFaceDetection';
import { extendWithFaceLandmarks, isWithFaceLandmarks } from './factories/WithFaceLandmarks';
export function resizeResults<T>(results: T, dimensions: IDimensions): T {
const { width, height } = new Dimensions(dimensions.width, dimensions.height);
if (width <= 0 || height <= 0) {
throw new Error(`resizeResults - invalid dimensions: ${JSON.stringify({ width, height })}`);
}
if (Array.isArray(results)) {
// return results.map(obj => resizeResults(obj, { width, height })) as any as T
return (results as Array<any>).map((obj) => resizeResults(obj, { width, height } as IDimensions)) as any as T;
}
if (isWithFaceLandmarks(results)) {
const resizedDetection = results.detection.forSize(width, height);
const resizedLandmarks = results.unshiftedLandmarks.forSize(resizedDetection.box.width, resizedDetection.box.height);
return extendWithFaceLandmarks(extendWithFaceDetection(results, resizedDetection), resizedLandmarks);
}
if (isWithFaceDetection(results)) {
return extendWithFaceDetection(results, results.detection.forSize(width, height));
}
if (results instanceof FaceLandmarks || results instanceof FaceDetection) {
return (results as any).forSize(width, height);
}
return results;
}