image-js/lib/align/affineTransfrom/affineFitFunction.js

Image processing and manipulation in JavaScript

import { getAffineTransform } from 'ml-affine-transform';
import { getMatrixFromPoints } from './getMatrixFromPoints.js';
/**
 * The fit function for an affine transformation.
 * Get the best transformation parameters for the given source and destination.
 * @param source - Source points.
 * @param destination - Destination points.
 * @returns The model parameters in the format [angle, xTranslation, yTranslation]
 */
export function affineFitFunction(source, destination) {
    const sourceMatrix = getMatrixFromPoints(source);
    const destinationMatrix = getMatrixFromPoints(destination);
    const result = getAffineTransform(sourceMatrix, destinationMatrix);
    return [
        result.rotation,
        result.translation.x,
        result.translation.y,
        result.scale,
    ];
}
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