WHAT'S NEW
POSTINGAN SELANJUTNYA: RUMUS MENGHITUNG LUAS PERMUKAAN DAN VOLUME BANGUN RUANG (BAGIAN 2)

Buat GDE

Image Color Filter

Upload and Click to Select Color from Image









CONVERT IMAGE TO CSV

Contour Detection in Image

Contour Detection in Image




importScripts('https://docs.opencv.org/4.x/opencv.js'); self.onmessage = function(e) { const { imgData, minLength, maxLength } = e.data; const src = cv.matFromArray(imgData.height, imgData.width, cv.CV_8UC4, imgData.data); const gray = new cv.Mat(); cv.cvtColor(src, gray, cv.COLOR_RGBA2GRAY, 0); const edged = new cv.Mat(); cv.Canny(gray, edged, 50, 150, 3, false); const contours = new cv.MatVector(); const hierarchy = new cv.Mat(); cv.findContours(edged, contours, hierarchy, cv.RETR_TREE, cv.CHAIN_APPROX_SIMPLE); const validContours = []; for (let i = 0; i < contours.size(); ++i) { const contour = contours.get(i); const length = cv.arcLength(contour, true); if (length >= minLength && length <= maxLength) { validContours.push(contour); } } const processedImage = new ImageData(new Uint8ClampedArray(src.data), src.cols, src.rows); self.postMessage({ processedImage, validContours }); src.delete(); gray.delete(); edged.delete(); contours.delete(); hierarchy.delete(); };