[英]How to use opencv to acess images to use for alpha blending in java for android
對於我的應用程序,我需要使用Alpha蒙版混合兩張照片。 如何完成代碼? 以及如何使用opecv訪問照片? 這是我到目前為止的代碼:
public int abc()
{
double alpha;
double beta;
double input;
Mat src1;
Mat src2;
Mat dst;
/// We use the alpha provided by the user if it is between 0 and 1
alpha= 0.5;
/// Read image ( same size, same type )
src1 = imread("");
src2 = imread("");
if( !src1.data ) { printf("Error loading src1 \n");return -1; }
if( !src2.data ) { printf("Error loading src2 \n");return -1; }
/// Create Windows
namedWindow("Linear Blend", 1);
beta = ( 1.0 - alpha );
addWeighted( src1, alpha, src2, beta, 0.0, dst);
imshow( "Linear Blend", dst );
waitKey(0);
return 0;
}
我這樣做是這樣的:
public void jpg2mat() {
File jpeg1 = new File(Environment.getExternalStorageDirectory() + "/dirName/img.jpg");
Bitmap bmp1 = BitmapFactory.decodeFile(jpeg1.getAbsolutePath());
Mat mat1 = new Mat();
Utils.bitmapToMat(bmp1, mat1);
}
在將圖像作為墊子之后,做您的工作。
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