OpenCv : המרצת צבעים – convert images

המרת צבעים שימוש  בניתוח מצלמה וראיה ממוחשבת
How to convert images from one color-space to another, like BGR  Gray, BGR  HSV
import cv2 as cv
import numpy as np
while(1):
# Take each frame
_, frame = cap.read()
# Convert BGR to HSV
hsv = cv.cvtColor(frame, cv.COLOR_BGR2HSV)
# define range of blue color in HSV
lower_blue = np.array([110,50,50])
upper_blue = np.array([130,255,255])
# Threshold the HSV image to get only blue colors
mask = cv.inRange(hsv, lower_blue, upper_blue)
# Bitwise-AND mask and original image
res = cv.bitwise_and(frame,frame, mask= mask)
cv.imshow('frame',frame)
cv.imshow('mask',mask)
cv.imshow('res',res)
k = cv.waitKey(5) & 0xFF
if k == 27:
break

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