In Python OpenCV Tutorial, Explained How to Blur image using cv2.GaussianBlur() opencv function.
Get the answers of below questions:
- How do I blur an image in OpenCV?
- How do you blur an image in Python?
- Why do we blur image?
- How do you blur part of a picture?
Syntax:
cv2.GaussianBlur(src, ksize, sigmaX[, dst[, sigmaY[, borderType]]]) -> dst
. @brief Blurs an image using a Gaussian filter. . . The function convolves the source image with the specified Gaussian kernel. In-place filtering is . supported. . @param src input image; the image can have any number of channels, which are processed . independently, but the depth should be CV_8U, CV_16U, CV_16S, CV_32F or CV_64F. . @param dst output image of the same size and type as src. . @param ksize Gaussian kernel size. ksize.width and ksize.height can differ but they both must be . positive and odd. Or, they can be zero's and then they are computed from sigma. . @param sigmaX Gaussian kernel standard deviation in X direction. . @param sigmaY Gaussian kernel standard deviation in Y direction; if sigmaY is zero, it is set to be . equal to sigmaX, if both sigmas are zeros, they are computed from ksize.width and ksize.height, . respectively (see #getGaussianKernel for details); to fully control the result regardless of . possible future modifications of all this semantics, it is recommended to specify all of ksize, . sigmaX, and sigmaY. . @param borderType pixel extrapolation method, see #BorderTypes
Show Image
# Show Image
################## Video Tutorial: https://youtu.be/W05qMagCaR4
import cv2
img_path = r"D:\Indian AI Production\OpenCV\01 Opencv Tutorial\020 Blure Image\sandeep_maheshwari.jpg"
img = cv2.imread(img_path)
cv2.imshow("Model Image", img)
cv2.waitKey(0)
cv2.destroyAllWindows()
Blur Image using Gaussian Blur
# Normal Blur
blur_img = cv2.GaussianBlur(img, (3,3), sigmaX=34, sigmaY=36)
cv2.imshow("Blur Image", blur_img)
cv2.imshow("Model Image", img)
cv2.waitKey(0)
cv2.destroyAllWindows()
# Heavy Blur
blur_img = cv2.GaussianBlur(img, (101,101), sigmaX=40, sigmaY=30)
cv2.imshow("Blur Image", blur_img)
cv2.imshow("Model Image", img)
cv2.waitKey(0)
cv2.destroyAllWindows()
Stretch image Vertically
blur_img = cv2.GaussianBlur(img, (1,99), sigmaX=10, sigmaY=10)
cv2.imshow("Blur Image", blur_img)
cv2.imshow("Model Image", img)
cv2.waitKey(0)
cv2.destroyAllWindows()
Stretch image Horizontally
blur_img = cv2.GaussianBlur(img, (99,1), sigmaX=10, sigmaY=20)
cv2.imshow("Blur Image", blur_img)
cv2.imshow("Model Image", img)
cv2.waitKey(0)
cv2.destroyAllWindows()
Save Blur Image
cv2.imwrite("blur_img.jpg", blur_img)