質問編集履歴
2
コードの追加
test
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test
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@@ -27,3 +27,109 @@
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よろしくお願いします。
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```Android(java)
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private void drawing() {
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//■Matの作成
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Mat mat_original = new Mat();
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Mat mat = new Mat();
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//■Bitmapをmatに変換
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Utils.bitmapToMat(bitmap_toumei, mat_original);
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Utils.bitmapToMat(bitmap_toumei, mat);
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//■チャネルの変更（floodfillは透明を扱えないため)
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Imgproc.cvtColor(mat, mat, Imgproc.COLOR_RGBA2GRAY); //変換種類 https://docs.opencv.org/java/2.4.9/org/opencv/imgproc/Imgproc.html
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org.opencv.core.Point seedPoint = new org.opencv.core.Point(seedCoordinateList.get(seedCoordinateList.size()-1).cX, seedCoordinateList.get(seedCoordinateList.size()-1).cY);
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//■輝度値/色の差の許容下限値の設定
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double diff = 50.0;
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//■Maskデータ作成 cv::Mat mask = cv::Mat::zeros(image.rows + 2, image.cols + 2, CV_8UC1);
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Mat mat2 = new Mat(mat.height() + 2 , mat.width() + 2, CV_8UC1);
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//■色変換
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Imgproc.floodFill(
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mat,
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mat2,
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seedPoint,
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new Scalar(.0, .0, .0, .0),
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new org.opencv.core.Rect(),
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new Scalar(diff),
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new Scalar(diff),
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4 | Imgproc.FLOODFILL_MASK_ONLY | (255 << 8)
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//Imgproc.FLOODFILL_FIXED_RANGE | 4 //種類： FLOODFILL_FIXED_RANGE：http://opencv.jp/opencv-2.1/cpp/miscellaneous_image_transformations.html
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);
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//■mask == 255 のピクセルの透過度を 255 にする。
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org.opencv.core.Rect roi = new org.opencv.core.Rect(1, 1, mat.width(), mat.height());
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mat2 = mat2.submat(roi);
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mat_original = mat_original.setTo(new Scalar(.0, .0, .0, .0),mat2);
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//■■bitmapに変換
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Bitmap output = Bitmap.createBitmap(bitmap_toumei.getWidth(), bitmap_toumei.getHeight(), Bitmap.Config.ARGB_8888);
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Utils.matToBitmap(mat_original ,output,true);
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bitmap_toumei = output;
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//■再描画
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invalidate();
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}
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```
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1
記入ミス
test
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@@ -1 +1 @@
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1
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-
floodFillでの塗りつぶしの色を透明に
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1
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floodFillでの塗りつぶしの色を透明にする方法について
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test
CHANGED
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File without changes
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