cameracv/libs/opencv/modules/js/test/test_objdetect.js
2023-05-18 21:39:43 +03:00

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JavaScript

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// Author: Sajjad Taheri, University of California, Irvine. sajjadt[at]uci[dot]edu
//
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// Copyright (c) 2015 The Regents of the University of California (Regents)
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// modification, are permitted provided that the following conditions are met:
// 1. Redistributions of source code must retain the above copyright
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if (typeof module !== 'undefined' && module.exports) {
// The environment is Node.js
var cv = require('./opencv.js'); // eslint-disable-line no-var
cv.FS_createLazyFile('/', 'haarcascade_frontalface_default.xml', // eslint-disable-line new-cap
'haarcascade_frontalface_default.xml', true, false);
}
QUnit.module('Object Detection', {});
QUnit.test('Cascade classification', function(assert) {
// Group rectangle
{
let rectList = new cv.RectVector();
let weights = new cv.IntVector();
let groupThreshold = 1;
const eps = 0.2;
let rect1 = new cv.Rect(1, 2, 3, 4);
let rect2 = new cv.Rect(1, 4, 2, 3);
rectList.push_back(rect1);
rectList.push_back(rect2);
cv.groupRectangles(rectList, weights, groupThreshold, eps);
rectList.delete();
weights.delete();
}
// CascadeClassifier
{
let classifier = new cv.CascadeClassifier();
const modelPath = '/haarcascade_frontalface_default.xml';
assert.equal(classifier.empty(), true);
classifier.load(modelPath);
assert.equal(classifier.empty(), false);
let image = cv.Mat.eye({height: 10, width: 10}, cv.CV_8UC3);
let objects = new cv.RectVector();
let numDetections = new cv.IntVector();
const scaleFactor = 1.1;
const minNeighbors = 3;
const flags = 0;
const minSize = {height: 0, width: 0};
const maxSize = {height: 10, width: 10};
classifier.detectMultiScale2(image, objects, numDetections, scaleFactor,
minNeighbors, flags, minSize, maxSize);
// test default parameters
classifier.detectMultiScale2(image, objects, numDetections, scaleFactor,
minNeighbors, flags, minSize);
classifier.detectMultiScale2(image, objects, numDetections, scaleFactor,
minNeighbors, flags);
classifier.detectMultiScale2(image, objects, numDetections, scaleFactor,
minNeighbors);
classifier.detectMultiScale2(image, objects, numDetections, scaleFactor);
classifier.delete();
objects.delete();
numDetections.delete();
}
// HOGDescriptor
{
let hog = new cv.HOGDescriptor();
let mat = new cv.Mat({height: 10, width: 10}, cv.CV_8UC1);
let descriptors = new cv.FloatVector();
let locations = new cv.PointVector();
assert.equal(hog.winSize.height, 128);
assert.equal(hog.winSize.width, 64);
assert.equal(hog.nbins, 9);
assert.equal(hog.derivAperture, 1);
assert.equal(hog.winSigma, -1);
assert.equal(hog.histogramNormType, 0);
assert.equal(hog.nlevels, 64);
hog.nlevels = 32;
assert.equal(hog.nlevels, 32);
hog.delete();
mat.delete();
descriptors.delete();
locations.delete();
}
});
QUnit.test('QR code detect and decode', function (assert) {
{
const detector = new cv.QRCodeDetector();
let mat = cv.Mat.ones(800, 600, cv.CV_8U);
assert.ok(mat);
// test detect
let points = new cv.Mat();
let qrCodeFound = detector.detect(mat, points);
assert.equal(points.rows, 0)
assert.equal(points.cols, 0)
assert.equal(qrCodeFound, false);
// test detectMult
qrCodeFound = detector.detectMulti(mat, points);
assert.equal(points.rows, 0)
assert.equal(points.cols, 0)
assert.equal(qrCodeFound, false);
// test decode (with random numbers)
let decodeTestPoints = cv.matFromArray(1, 4, cv.CV_32FC2, [10, 20, 30, 40, 60, 80, 90, 100]);
let qrCodeContent = detector.decode(mat, decodeTestPoints);
assert.equal(typeof qrCodeContent, 'string');
assert.equal(qrCodeContent, '');
//test detectAndDecode
qrCodeContent = detector.detectAndDecode(mat);
assert.equal(typeof qrCodeContent, 'string');
assert.equal(qrCodeContent, '');
// test decodeCurved
qrCodeContent = detector.decodeCurved(mat, decodeTestPoints);
assert.equal(typeof qrCodeContent, 'string');
assert.equal(qrCodeContent, '');
decodeTestPoints.delete();
points.delete();
mat.delete();
}
});