opencv.js doesn't loaded even after 'onload' event occurs
I get error like "cv.Mat is not a constructor" or "cv is not defined". My code is:
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script async src="js/opencv.js" onload="onOpenCvReady()" type="text/javascript"></script>
</head>
<body>
<canvas id="canvasOutput" width="300" height="300"></canvas>
<script type="text/javascript">
var scene = new Image();
scene.src = 'templates/Scene_7.png';
window.addEventListener("load", function () {
try {
let scene1 = cv.imread(scene);
cv.imshow('canvasOutput', scene1);
}
catch (e) {
}
}, false);
function onOpenCvReady() {
try {
let scene1 = cv.imread(scene);
cv.imshow('canvasOutput', scene1);
}
catch (e) {
}
}
</script>
</body>
</html>
But, if I change code to
<input id="Button" onclick="start();" type="button" value="Start" />
function start() {
try {
let scene1 = cv.imread(scene);
cv.imshow('canvasOutput', scene1);
}
catch (e) {
}
}
and press the button "Start", then everything is OK. So, I think opencv.js doesn't load even after onOpenCvReady() and window "load" events occur. But why?
add a comment
