Question

所以我基本上要做的是将图像中的像素转换为我想要的颜色，我在openCV中找不到任何东西，我想出的唯一方法是：

     for (int i = 0; i < image.cols(); i++) {
     for (int j = 0; j < image.rows(); j++) {

     double[] data = image.get(i, j);
     data[0] = 255;
     data[1] = 255;
     data[2] = 255;
     image.put(i, j, data);
     }
     }
     Utils.matToBitmap(image, bmp);
     return bmp;;

试图在java中模仿这个c++ code，但它不起作用

Answer 1

好的，发现为什么它不起作用，我应该写：

Public Function RGBtoDecimal(red As Integer, green As Integer, blue As Integer) As Long
    Dim dec As Long = 0
    Dim n, r As Integer
    'write each colour as base 16

    'blue first, starting with smallest power of 16 right to left
    n = blue
    Dim j As Integer = 0
    For i As Integer = 0 To 1
        r = CInt(Math.Round(16 * ((n / 16) - Int(n / 16))))
        n = CInt(Int(n / 16))
        dec = CLng(dec + (r * (16 ^ j)))
        j += 1
    Next

    'green
    n = green
    For i As Integer = 0 To 1
        r = CInt(Math.Round(16 * ((n / 16) - Int(n / 16))))
        n = CInt(Int(n / 16))
        dec = CLng(dec + (r * (16 ^ j)))
        j += 1
    Next

    'red
    n = red
    For i As Integer = 0 To 1
        r = CInt(Math.Round(16 * ((n / 16) - Int(n / 16))))
        n = CInt(Int(n / 16))
        dec = CLng(dec + (r * (16 ^ j)))
        j += 1
    Next
    Return dec
End Function

而不是：

for (int i = 0; i < image.height(); i++) {
            for (int j = 0; j < image.width(); j++) {

使用openCV转换图像中的像素颜色

1 个答案: