Python Opencv混合透明图像

好的,我已经通过OpenCV运行了:

# function to overlay a transparent image on background.
def transparentOverlay(backgroundImage, overlayImage, pos=(0, 0), scale=1):
    overlayImage = cv2.resize(overlayImage, (0, 0), fx=scale, fy=scale)
    h, w, _ = overlayImage.shape  # Size of foreground
    rows, cols, _ = backgroundImage.shape  # Size of background Image
    y, x = pos[0], pos[1]  # Position of foreground/overlayImage image

    # loop over all pixels and apply the blending equation
    for i in range(h):
        for j in range(w):
            if x + i >= rows or y + j >= cols:
                continue
            alpha = float(overlayImage[i][j][3] / 255.0)  # read the alpha channel
            backgroundImage[x + i][y + j] = alpha * overlayImage[i][j][:3] + (1 - alpha) * backgroundImage[x + i][y + j]
    return backgroundImage

然后使用如下:

# Overlay transparent images at desired postion(x,y) and Scale.
result = transparentOverlay(processedImage, shuttleIcon, tuple(trackedCenterPoint), 0.7)

似乎解决了我的问题。