diff --git a/modules/js/generator/embindgen.py b/modules/js/generator/embindgen.py
index 00d2406046..25cb90cfb9 100644
--- a/modules/js/generator/embindgen.py
+++ b/modules/js/generator/embindgen.py
@@ -248,16 +248,17 @@ class ArgInfo(object):
                 self.const = True
             elif m == "/Ref":
                 self.reference = True
-        if self.tp == "Mat":
-            if self.outputarg:
-                self.tp = "cv::Mat&"
-            elif self.inputarg:
-                self.tp = "const cv::Mat&"
-        if self.tp == "vector_Mat":
-            if self.outputarg:
-                self.tp = "std::vector<cv::Mat>&"
-            elif self.inputarg:
-                self.tp = "const std::vector<cv::Mat>&"
+        if self.tp == "Mat" and (self.inputarg or self.outputarg):
+            self.tp = "cv::Mat&"
+            if self.inputarg and not self.outputarg:
+                self.const = True
+        if self.tp == "vector_Mat" and (self.inputarg or self.outputarg):
+            self.tp = "std::vector<cv::Mat>&"
+            if self.reference and not self.const:
+                self.inputarg = False
+                self.outputarg = True
+            elif self.inputarg and not self.outputarg:
+                self.const = True
         self.tp = handle_vector(self.tp).strip()
         if self.const:
             self.tp = "const " + self.tp