Adjust the brightness and/or contrast of an image :param image: OpenCV BGR image :param contrast: Float, contrast adjustment with 0 mean

function to take the corners from cv2.GoodFeaturesToTrack and return cv2.KeyPoints

--------------------------------------------------------------------------------------------- author: Kyle Hounslow ---------------------

Utility for drawing vertically & horizontally centered text with line breaks :param img: Image. :param text: Text string to be drawn. :pa

Utility for drawing text with line breaks :param img: Image. :param text: Text string to be drawn. :param org: Bottom-left corner of the