Merge pull request #2623 from invigorzz313/blendlinear

blending of images

Author: avinashkranjan

Blending Images/Output_0.5_alpha.jpg

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+# Blending Images
+This python script will allow us to linear blend two images depending on given alpha - the amount of blending.
+
+## Setup Instructions
+### Install python3
+sudo apt-get install python3
+### Install pip (package installer for python)
+sudo apt-get install python3-pip
+### Install OpenCV library with pip
+pip3 install opencv-python
+### Install tkinter library
+sudo apt-get install python3-tk
+
+## Details/Output
+A dialog box appears with option to enter alpha (the degree of blending, 0 to 1), and select images 1 and 2. Then clicking proceed will display the blended image and stores it in the current folder.
+
+## Author
+Github: invigorzz313

Blending Images/ReadMe.md

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+import cv2
+import tkinter as tk
+from tkinter.filedialog import *
+
+window = tk.Tk()
+window.title("Image blending")
+window.geometry('300x140')
+
+def image1(): # getting image 1
+    photo1 = askopenfilename()
+    global img1
+    img1 = cv2.imread(photo1)
+    img1 = cv2.resize(img1,(500,500))
+
+def image2(): # getting image 2
+    photo2 = askopenfilename()
+    global img2
+    img2 = cv2.imread(photo2)
+    img2 = cv2.resize(img2,(500,500))
+
+def proceeds(): # reading alpha and displaying output
+    global alpha
+    alpha = t.get(1.0, "end-1c")
+    alpha = float(alpha)
+    if alpha>=0 and alpha<=1:
+        beta = 1-alpha
+        res = cv2.addWeighted(img1, alpha, img2, beta, 0.0)
+        cv2.imshow('Result', res)
+        cv2.imwrite("Output.jpg", res)
+        cv2.waitKey(0)
+    else: # when alpha is invalid
+        print("invalid alpha")
+        exit()
+
+label = tk.Label(window, text="Enter alpha (0 to 1)").grid(row=0, column=0)
+label = tk.Label(window, text="Image 1").grid(row=1, column=0)
+label = tk.Label(window, text="Image 2").grid(row=2, column=0)
+
+t = tk.Text(window, height=1, width=5)
+b1 = tk.Button(window, text='choose image 1', command=image1)
+b2 = tk.Button(window, text='choose image 2', command=image2)
+proceed = tk.Button(window, text='Proceed', command=proceeds)
+
+t.grid(row=0,column=1)
+b1.grid(row=1,column=1)
+b2.grid(row=2,column=1)
+proceed.grid(row=3,column=1)
+
+window.mainloop()
+cv2.destroyAllWindows()