浅谈Python实现opencv之图片色素的数值运算和逻辑运算

Rosalba ·

更新时间:2024-11-10

· 1430 次阅读

数值运算

代码：


# -*- coding=GBK -*-
import cv2 as cv
# 数值运算：加减乘除
def shu_image(src11, src22):
          src = cv.add(src11, src22)  # 加 : 图像对应像素值相加，> 255 时取255
          cv.namedWindow("add",0)
          cv.resizeWindow("add", 300, 300)  # 设置播放窗口长和宽
          cv.imshow("add", src)
          src = cv.subtract(src11, src22)  # 减 : 图像对应像素值相减，< 0 时取0
          cv.namedWindow("subtract", 0)
          cv.resizeWindow("subtract", 300, 300)
          cv.imshow("subtract", src)
          src = cv.multiply(src11, src22)  # 乘 : 图像对应像素值相乘，> 255 时取255
          cv.namedWindow("multiply", 0)
          cv.resizeWindow("multiply", 300, 300)
          cv.imshow("multiply", src)
          src = cv.divide(src11, src22)  # 除 : 图像对应像素值相除，a( > 0) / 0 = 255
          cv.namedWindow("divide", 0)
          cv.resizeWindow("divide", 300, 300)
          cv.imshow("divide", src)
src1 = cv.imread("jueduisiwang.bmp")
src2 = cv.imread("fuchoutianshi.bmp")
cv.namedWindow("src1", 0)
cv.resizeWindow("src1", 300, 300)
cv.imshow("src1", src1)
src2 = src2[:,:30,:] # 两张图片尺寸大小要一样，不然就需要调整
cv.namedWindow("src2", 0)
cv.resizeWindow("src2", 300, 300)
cv.imshow("src2", src2)
shu_image(src1, src2)
cv.waitKey(0)
cv.destroyAllWindows()

结果：

逻辑运算

代码：


# -*- coding=GBK -*-
import cv2 as cv
# 逻辑运算：与或非的操作
def luo_image(src1, src2):
    src = cv.bitwise_and(src1, src2)
    cv.namedWindow("AND", 0)
    cv.resizeWindow("AND", 300, 300)
    cv.imshow("AND", src)
    src = cv.bitwise_or(src1, src2)
    cv.namedWindow("OR", 0)
    cv.resizeWindow("OR", 300, 300)
    cv.imshow("OR", src)
    src = cv.bitwise_not(src1)
    cv.namedWindow("NOR", 0)
    cv.resizeWindow("NOR", 300, 300)
    cv.imshow("NOR", src)
    src = cv.bitwise_xor(src1, src2)
    cv.namedWindow("XOR", 0)
    cv.resizeWindow("XOR", 300, 300)
    cv.imshow("XOR", src)
src1 = cv.imread("jueduisiwang.bmp")
src2 = cv.imread("fuchoutianshi.bmp")
cv.namedWindow("src1", 0)
cv.resizeWindow("src1", 300, 300)
cv.imshow("src1", src1)
src2 = src2[:,:30,:] # 两张图片尺寸大小要一样，不然就需要调整
cv.namedWindow("src2", 0)
cv.resizeWindow("src2", 300, 300)
cv.imshow("src2", src2)
luo_image(src1, src2)
cv.waitKey(0)
cv.destroyAllWindows()

结果(不太具有参考价值)：