From 4e050e85ada4c8fcccb286841d830a232b5ba167 Mon Sep 17 00:00:00 2001
From: Zero2key <syhunicorn@qq.com>
Date: Mon, 3 Apr 2023 10:33:20 +0800
Subject: [PATCH] add opencv.js imread function can use OffscreenCanvas

---
 modules/js/src/helpers.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/js/src/helpers.js b/modules/js/src/helpers.js
index 59e6e65b29..9f1934c279 100644
--- a/modules/js/src/helpers.js
+++ b/modules/js/src/helpers.js
@@ -57,7 +57,7 @@ Module['imread'] = function(imageSource) {
         canvas.height = img.height;
         ctx = canvas.getContext('2d', { willReadFrequently: true });
         ctx.drawImage(img, 0, 0, img.width, img.height);
-    } else if (img instanceof HTMLCanvasElement) {
+    } else if (img instanceof HTMLCanvasElement || img instanceof OffscreenCanvas) {
         canvas = img;
         ctx = canvas.getContext('2d');
     } else {