feat: add support for the function 'morphologyDefaultBorderValue'

Author: martinbooth

cpp/FOCV_Function.cpp

@@ -1107,6 +1107,12 @@ jsi::Object FOCV_Function::invoke(jsi::Runtime& runtime, const jsi::Value* argum
 
             cv::medianBlur(*src, *dst, ksize);
         } break;
+        case hashString("morphologyDefaultBorderValue", 28): {
+            auto scalar = cv::morphologyDefaultBorderValue();
+            std::string id = FOCV_Storage::save(scalar);
+
+            return FOCV_JsiObject::wrap(runtime, "scalar", id);
+        } break;
         case hashString("morphologyEx", 12): {
             auto src = args.asMatPtr(1);
             auto dst = args.asMatPtr(2);

docs/pages/availablefunctions.md

@@ -1899,6 +1899,14 @@ The function smoothes an image using the median filter with the 𝚔𝚜𝚒𝚣
 invoke(name: 'medianBlur', src: Mat, dst: Mat, ksize: number): void;
 ```
 
+### morphologyDefaultBorderValue
+
+@returns "magic" border value for erosion and dilation. It is automatically transformed to Scalar::all(-DBL_MAX) for dilation.
+
+```js
+invoke(name: 'morphologyDefaultBorderValue'): Scalar;
+```
+
 ### morphologyEx
 
 Performs advanced morphological transformations.

src/functions/ImageProcessing/ImageFiltering.ts

@@ -237,6 +237,11 @@ export type ImageFiltering = {
    */
   invoke(name: 'medianBlur', src: Mat, dst: Mat, ksize: number): void;
 
+  /**
+   * returns "magic" border value for erosion and dilation. It is automatically transformed to Scalar::all(-DBL_MAX) for dilation.
+   */
+  invoke(name: 'morphologyDefaultBorderValue'): Scalar;
+
   /**
    * Performs advanced morphological transformations.
    * The function cv::morphologyEx can perform advanced morphological transformations using an erosion and dilation as basic operations.