Merge branch 'master' into master

Compression_Analysis/PSNR.py

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+import numpy as np
+import math
+import cv2
+
+def Representational(r,g,b):
+	return (0.299*r+0.287*g+0.114*b)
+
+def calculate(img):
+	b,g,r = cv2.split(img)
+	pixelAt = Representational(r,g,b)
+	return pixelAt
+
+def main():
+
+	#Loading images (orignal image and compressed image)
+	orignal_image = cv2.imread('orignal_image.png',1)
+	compressed_image = cv2.imread('compressed_image.png',1)
+
+	#Getting image height and width
+	height,width = orignal_image.shape[:2]
+
+	orignalPixelAt = calculate(orignal_image)
+	compressedPixelAt = calculate(compressed_image)
+
+	diff = orignalPixelAt - compressedPixelAt
+	error = np.sum(np.abs(diff) ** 2)
+
+	error = error/(height*width)
+
+	#MSR = error_sum/(height*width)
+	PSNR = -(10*math.log10(error/(255*255)))
+
+	print("PSNR value is {}".format(PSNR))
+
+
+if __name__ == '__main__':
+	main()
+

Decimal_To_Binary.py

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+'''
+PYTHON 3
+Author: Sandeep Pillai (www.github.com/Corruption13)
+
+Program: Decimal to Binary converter.
+
+THis program accepts fractional values, the accuracy can be set below:
+'''
+decimal_accuracy = 7
+
+
+def dtbconverter(num):      # Function inputs a float value and returns a list as output
+                            # Reasoning for list instead of integer: to avoid integer overflow error.
+
+    whole= []                                   # The part before decimal point
+    fractional = ['.']                          # The part after decimal point
+
+    decimal = round(num%1, decimal_accuracy)    # Extract fractional number part of decimal
+    w_num = int(num)                            # Extract whole number part of decimal.
+
+    i=0     # Some fractional decimal numbers have infinite binary values, so we limit this loop below.
+
+    #Loop to find binary of decimal part
+    while(decimal!=1 and i<decimal_accuracy):
+            decimal = decimal*2
+            fractional.append(int(decimal//1))
+            decimal = round(decimal%1, decimal_accuracy)
+            if(decimal == 0): break # Removes trailing zeros.
+            i = i + 1
+
+    #Loop to find binary of whole number part.
+    while(w_num!=0):
+        whole.append(w_num%2)
+        w_num = w_num//2
+    whole.reverse()
+
+    return whole + fractional  ### End of dtbconverter() - 16 lines
+
+
+#Test lines.
+number = float(input("Enter ANY base-10 Number: "))
+print("The Binary Equivalant: " , *dtbconverter(number))