# 导入库
import numpy as np
import cv2
def lt(image_path,pa,pb,pc,pd):
    X = cv2.imread(image_path, 0)

    # 对 X 进行线性变换
    a = int(pa)
    b = int(pb)
    c = int(pc)
    d = int(pd)
    result = (d - c) / (b - a) * X + (b * c - a * d) / (b - a)

    cv2.imshow('result',result)

    cv2.waitKey(0)

    cv2.destroyAllWindows()