quiz_helpers.py 文件源码

def cv2_imshow(image, name='name'):
    """Display an OpenCV image (2D NumPy array) through the Udacity IDE."""

    global max_images, num_images

    if num_images >= max_images:
        print("WARNING: Exceeded max no. of imshow() calls ({}), no more images will be shown.".format(max_images))
        return
    num_images += 1

    ext = 'png'

    # encodedImage = cv2.cv.EncodeImage('.' + ext, cv2.cv.fromarray(image))  # OpenCV 2.3.x
    # bytes = encodedImage.tostring()

    retval, bytes = cv2.imencode('.' + ext, image)  # OpenCV 2.4.x

    output_image(name, ext, bytes)