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IAmSuyogJadhav/Transparent drawings in OpenCV.py

Created July 10, 2018 09:41
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Add transparency to rectangles, circles, polgons, text or any shape drawn in OpenCV.
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Transparent drawings in OpenCV.py
import cv2
image = cv2.imread('test.jpg')
overlay = image.copy()
x, y, w, h = 10, 10, 10, 10 # Rectangle parameters
cv2.rectangle(overlay, (x, y), (x+w, y+h), (0, 200, 0), -1) # A filled rectangle
alpha = 0.4 # Transparency factor.
# Following line overlays transparent rectangle over the image
image_new = cv2.addWeighted(overlay, alpha, image, 1 - alpha, 0)
@IAmSuyogJadhav

IAmSuyogJadhav commented Feb 20, 2021

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i think open cv should implement this inside rectangle function as a parameter of transparency

Yup. Completely agree. This should be a straightforward thing yet we have to do it in a roundabout way currently.

@omegaBionic

omegaBionic commented May 4, 2021

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Thanks :)

@TalhaUsuf

TalhaUsuf commented Jul 29, 2021

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Man ! at last i found a simple solution. Lots of thanks. Allah bless you

@anibalsolon

anibalsolon commented Sep 14, 2021

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Cheers!

@baotruyenthach

baotruyenthach commented Sep 15, 2021

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This method works!

@Anshir08

Anshir08 commented Nov 20, 2021

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Nice & Thanks

@jonathan-cartica

jonathan-cartica commented Apr 19, 2022

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very good very nice!

@idangrady

idangrady commented Oct 4, 2022

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Appreciated!!

@joabnd7

joabnd7 commented Dec 18, 2022

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Legend!

@Jay4BioPZ

Jay4BioPZ commented Jun 7, 2023

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You are a hero :)

@intisy

intisy commented Feb 11, 2024

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Thank you so much!

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