Package for opencvjs in typescript (WIP), adding class and function definiitons progresssively.
Compatible with OpenCV 4.5 version
import cv, { Mat, Rect } from "opencv-ts";
cv.onRuntimeInitialized = () => {
const src = cv.imread("inputCanvas");
const dst: Mat = new cv.Mat(src.cols, src.rows, cv.CV_8UC4);
cv.resize(src, dst, new cv.Size(500, 500), 0, 0, cv.INTER_AREA);
const roiRect: Rect = new cv.Rect(0, 0, 200, 200);
const roi = dst.roi(roiRect);
cv.imshow('outputCanvas', roi);
};