BLOB - Support RGBA

2d2499f6 · Hamdi Sahloul · 004a1cd6 · 2d2499f6
Commit 2d2499f6 authored Jan 07, 2018 by Hamdi Sahloul
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blobdetector.cpp modules/features2d/src/blobdetector.cpp +1 -1

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--- a/modules/features2d/src/blobdetector.cpp
+++ b/modules/features2d/src/blobdetector.cpp
@@ -311,7 +311,7 @@ void SimpleBlobDetectorImpl::detect(InputArray image, std::vector<cv::KeyPoint>&
    //TODO: support mask
    keypoints.clear();
    Mat grayscaleImage;
-    if (image.channels() == 3)
+    if (image.channels() == 3 || image.channels() == 4)
        cvtColor(image, grayscaleImage, COLOR_BGR2GRAY);
    else
        grayscaleImage = image.getMat();