Exp.No : 03
Date : 29.03.2023
To perform the color conversion between RGB, BGR, HSV, and YCbCr color models.
Anaconda - Python 3.7
- Step1: Import cv2 library and upload the image or capture an image.
- Step2: Read the saved image using cv2.imread().
- Step3: Convert the image into the given color transformation using cv2.cvtColor().
- Step4: Split and merge the image using cv2.split() and cv2.merge()
- Step5: Output the image using cv2.imshow()
Developed By: Kaushika A
Register Number: 212221230048
i) Convert BGR and RGB to HSV and GRAY
image=cv2.imread("original.PNG",1)
img= cv2.resize(image, (465,324))
cv2.imshow("original",img)
hsv_bgr=cv2.cvtColor(img,cv2.COLOR_BGR2HSV)
cv2.imshow("BGR to HSV",hsv_bgr)
hsv_rgb= cv2.cvtColor(img,cv2.COLOR_RGB2HSV)
cv2.imshow('RGB to HSV',hsv_rgb)
gray_bgr= cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
cv2.imshow('BGR2GRAY',gray_bgr)
gray_rgb= cv2.cvtColor(img,cv2.COLOR_RGB2GRAY)
cv2.imshow('RGB2GRAY',gray_rgb)
cv2.waitKey(0)
cv2.destroyAllWindows()ii)Convert HSV to RGB and BGR
image2 = cv2.imread("original.PNG")
img2= cv2.resize(image2, (465,324))
hsv = cv2.cvtColor(img2, cv2.COLOR_BGR2HSV)
cv2.imshow("hsv_image", hsv)
hsv_rgb = cv2.cvtColor(hsv, cv2.COLOR_HSV2RGB)
cv2.imshow("hsv to rgb", hsv_rgb)
hsv_bgr = cv2.cvtColor(hsv, cv2.COLOR_HSV2BGR)
cv2.imshow("hsv to bgr", hsv_bgr)
cv2.waitKey(0)
cv2.destroyAllWindows()iii)Convert RGB and BGR to YCrCb
image3 = cv2.imread("original4.PNG")
img3= cv2.resize(image3, (470,324))
cv2.imshow("original(bgr)", img3)
img_ycrcb = cv2.cvtColor(img3 , cv2.COLOR_BGR2YCrCb)
cv2.imshow("bgr to YCrCb ", img_ycrcb)
img_rgb = cv2.cvtColor(img3, cv2.COLOR_BGR2RGB)
cv2.imshow("rgb", img_rgb)
img_bgr_y = cv2.cvtColor(img_rgb, cv2.COLOR_BGR2YCrCb)
cv2.imshow("rgb to YCrCb", img_bgr_y)
cv2.waitKey(0)
cv2.destroyAllWindows()iv)Split and Merge RGB Image
image4 = cv2.imread("original3.PNG")
img4= cv2.resize(image4, (470,324))
b,g,r = cv2.split(img4)
cv2.imshow("red model", r)
cv2.imshow("green model", g)
cv2.imshow("blue model ", b)
merger = cv2.merge([b,g,r])
cv2.imshow("merged", merger )
cv2.waitKey(0)
cv2.destroyAllWindows()v) Split and merge HSV Image
image5 = cv2.imread("original5.PNG")
img5= cv2.resize(image5, (470,294))
hsv = cv2.cvtColor(img5 , cv2.COLOR_BGR2HSV)
cv2.imshow("initial hsv ", hsv)
h,s,v = cv2.split(hsv)
cv2.imshow("hue model", h)
cv2.imshow("saturation model", s)
cv2.imshow("value model ", v)
merger = cv2.merge([h,s,v])
cv2.imshow("merged image", merger )
cv2.waitKey(0)
cv2.destroyAllWindows()
Thus the color conversion was performed between RGB, HSV and YCbCr color models.
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