立即學習:https://edu.csdn.net/course/play/26281/327071?utm_source=blogtoedu
有沒有人想買個光度計(照度計)? ^_^
圖像空間實戰代碼如下:
import cv2 as cv
filename = "D:/python_test/lena.jpg"
img = cv.imread(filename)
gray = cv.cvtColor(img, cv.COLOR_BGR2GRAY) #顏色空間轉換
cv.imshow("Hello,Lena!",img)
cv.imshow("gray",gray)
cv.waitKey() #關閉全部窗口繼續向下執行
hsv = cv.cvtColor(img, cv.COLOR_BGR2HSV) #顏色空間轉換
cv.imshow("Hue(色度)", hsv[:,:,0])
cv.imshow("Saturation(飽和度)", hsv[:,:,1])
cv.imshow("Value(明度)", hsv[:,:,2])
cv.waitKey() #關閉全部窗口繼續向下執行
cv.imshow("Blue(藍色)", img[:,:,0])
cv.imshow("Green(綠色)", img[:,:,1])
cv.imshow("Red(紅色)", img[:,:,2])
cv.waitKey() #關閉全部窗口繼續向下執行
cv.destroyAllWindows()
濾波函數實戰代碼如下:
import numpy as np
import cv2 as cv
# 原始圖像加入彩色噪聲(高斯噪聲),mean:均值,var:方差
def gauss_noise(image, mean=0, var=0.001):
image = np.array(image/255, dtype=float)
noise = np.random.normal(mean, var ** 0.5, image.shape)
out = image + noise
if out.min()<0:
low_clip = -1.
else:
low_clip = 0.
out = np.clip(out, low_clip, 1.0)
out = np.uint8(out*255)
return out
filename = "D:/python_test/tree.png"
img = cv.imread(filename)
img = gauss_noise(img) #原圖像加入高斯噪聲,這裏只用img一個參數即可
blur = cv.blur(img, (5,5)) #平均濾波
gauss = cv.GaussianBlur(img, (5,5) ,0) #高斯濾波
median = cv.medianBlur(img, 5) #中值濾波
bilateral = cv.bilateralFilter(img, 5, 150 ,150) #雙邊濾波
cv.imshow("Image(原始加噪後的圖像)", img)
cv.imshow("Blurred(平均濾波後的圖像)", blur)
cv.imshow("Gauss(高斯濾波後的圖像)", gauss)
cv.imshow("Median filtered(中值濾波後的圖像)", median)
cv.imshow("Bilateral filtered(雙邊濾波後的圖像)", bilateral)
cv.waitKey() #關閉全部窗口繼續向下執行
cv.destroyAllWindows()