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BhargavGamitBhargavGamit
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Merge pull request BhargavGamit#1 from vennela1/master
initial merge
2 parents edc2ff0 + 966305f commit 97268ab

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‎BitonalAlgo.py‎

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# Author Sri Vennela Vaishnapu
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# Email [email protected]
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# bi toning algorithm
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#if (pixelBuffer[k] + pixelBuffer[k + 1] +
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# pixelBuffer[k + 2] <= threshold)
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# {
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# pixelBuffer[k] = darkColor.B;
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# pixelBuffer[k + 1] = darkColor.G;
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# pixelBuffer[k + 2] = darkColor.R;
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# }
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# else
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# {
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# pixelBuffer[k] = lightColor.B;
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# pixelBuffer[k + 1] = lightColor.G;
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# pixelBuffer[k + 2] = lightColor.R;
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# }
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from PIL import Image
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import random
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lightcolor_red=0
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lightcolor_blue=139
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lightcolor_green=0
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darkcolor_red=179
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darkcolor_blue=222
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darkcolor_green=196
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i = Image.open("input.png")
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#pixel data is stored in pixels in form of two dimensional array
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pixels = i.load()
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width, height = i.size
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j=Image.new(i.mode,i.size)
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threshold = 374
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for x in range(width):
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for y in range(height):
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cpixel = pixels[x, y]
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#cpixel[0] contains red value cpixel[1] contains green value
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#cpixel[2] contains blue value cpixel[3] contains alpha value
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if(int(cpixel[0] + cpixel[1] +cpixel[2]) > int(threshold)):
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red = lightcolor_red
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green = lightcolor_green
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blue = lightcolor_blue
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j.putpixel((x,y),(red,green,blue))
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else:
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red = darkcolor_red
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green = darkcolor_green
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blue = darkcolor_blue
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j.putpixel((x,y),(red,green,blue))
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j.save('output.png')

‎ColorTintAlgo.py‎

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# Author Sri Vennela Vaishnapu
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# Email [email protected]
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# ColourTint algorithm
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#blue = pixelBuffer[k] + (255 - pixelBuffer[k]) * blueTint;
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# green = pixelBuffer[k + 1] + (255 - pixelBuffer[k + 1]) * greenTint;
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# red = pixelBuffer[k + 2] + (255 - pixelBuffer[k + 2]) * redTint;
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# if (blue > 255)
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# { blue = 255; }
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# if (green > 255)
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# { green = 255; }
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# if (red > 255)
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# { red = 255; }
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from PIL import Image
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i = Image.open("input.png")
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print(i.format,i.size,i.mode)
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pixels = i.load()
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width, height = i.size
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j=Image.new(i.mode,i.size)
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blueTint=input("enter the percentage of blue tint in fraction")
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greenTint=input("enter the percentage of green tint in fraction")
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redTint=input("enter the percentage of red tint in fraction")
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for x in range(width):
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for y in range(height):
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cpixel = pixels[x, y]
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#cpixel[0] contains red value cpixel[1] contains green value
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#cpixel[2] contains blue value cpixel[3] contains alpha value
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outputBlue = int(cpixel[0] + (255 - cpixel[0]) * blueTint);
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outputGreen = int(cpixel[1] + (255 - cpixel[1]) * greenTint);
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outputRed = int(cpixel[2] + (255 - cpixel[2]) * redTint);
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if(outputRed>255):
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outputRed=255
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if(outputGreen>255):
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outputGreen=255
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if(outputBlue>255):
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outputBlue=255
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j.putpixel((x,y),(outputRed,outputGreen,outputBlue))
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j.save('output.png')
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‎ColourBalanceAlgo.py‎

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# Author Sri Vennela Vaishnapu
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# Email [email protected]
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# bi toning algorithm
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# blue = 255.0f / blueLevelFloat * (float )pixelBuffer[k];
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# green = 255.0f / greenLevelFloat * (float)pixelBuffer[k + 1];
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# red = 255.0f / redLevelFloat * (float)pixelBuffer[k + 2];
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# if (blue > 255) {blue = 255;}
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# else if (blue < 0) {blue = 0;}
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# if (green > 255) {green = 255;}
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# else if (green < 0) {green = 0;}
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# if (red > 255) {red = 255;}
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# else if (red < 0) {red = 0;}
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from PIL import Image
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i = Image.open("lena.jpg")
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print(i.format,i.size,i.mode)
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pixels = i.load() # this is not a list, nor is it list()'able
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width, height = i.size
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j=Image.new(i.mode,i.size)
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blueLevelFloat=input("enter the color level for blue which is ranging from 0 to 255")
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greenLevelFloat=input("enter the color level for green which is ranging from 0 to 255")
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redLevelFloat=input("enter the color level for red which is ranging from 0 to 255")
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for x in range(width):
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for y in range(height):
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cpixel = pixels[x, y]
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#cpixel[0] contains red value cpixel[1] contains green value
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#cpixel[2] contains blue value cpixel[3] contains alpha value
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outputBlue = int(255.0 / blueLevelFloat * cpixel[0]);
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outputGreen = int(255.0 / greenLevelFloat * cpixel[1]);
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outputRed = int(255.0 / redLevelFloat * cpixel[2]);
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if(outputRed>255):
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outputRed=255
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elif(outputRed<0):
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outputRed=0
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if(outputGreen>255):
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outputGreen=255
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elif(outputGreen<0):
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outputGreen=0
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if(outputBlue>255):
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outputBlue=255
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elif(outputBlue<0):
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outputBlue=0
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j.putpixel((x,y),(outputRed,outputGreen,outputBlue))
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j.save('colourbal.png')
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‎ColourInversionAlgo.py‎

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# Author Sri Vennela Vaishnapu
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# Email [email protected]
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# Inversion algorithm
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# colour = GetPixelColour(x, y)
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# invertedRed = 255 - Red(colour)
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# invertedGreen = 255 - Green(colour)
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# invertedBlue = 255 - Blue(colour)
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# PutPixelColour(x, y) = RGB(invertedRed, invertedGreen,invertedBlue)
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from PIL import Image
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i = Image.open("input.png")
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#pixel data is stored in pixels in form of two dimensional array
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pixels = i.load()
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width, height = i.size
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j=Image.new(i.mode,i.size)
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for x in range(width):
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for y in range(height):
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cpixel = pixels[x, y]
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#cpixel[0] contains red value cpixel[1] contains green value
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#cpixel[2] contains blue value cpixel[3] contains alpha value
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invertedRed = 255 - cpixel[0]
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invertedGreen = 255 - cpixel[1]
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invertedBlue = 255 - cpixel[2]
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j.putpixel((x, y),(invertedRed, invertedGreen, invertedBlue))
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j.save('output.png')

‎ColourShadingAlgo.py‎

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# Author Sri Vennela Vaishnapu
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# Email [email protected]
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# Colour Shading algorithm
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from PIL import Image
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import random
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i = Image.open("lena.jpg")
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blueShade = input("enter the ahdingfactor for blue range:0 to 1")
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redShade = input("enter the ahdingfactor for red range:0 to 1")
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greenShade = input("enter the ahdingfactor for green range:0 to 1")
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#pixel data is stored in pixels in form of two dimensional array
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pixels = i.load()
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width, height = i.size
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j=Image.new(i.mode,i.size)
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for x in range(width):
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for y in range(height):
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cpixel = pixels[x, y]
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#cpixel[0] contains red value cpixel[1] contains green value
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#cpixel[2] contains blue value cpixel[3] contains alpha value
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blue = int(cpixel[0] * blueShade)
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green = int(cpixel[1] * greenShade)
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red = int(cpixel[2] * redShade)
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if(blue < 0):
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blue = 0
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if(green < 0):
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green = 0
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if(red < 0):
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red = 0
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j.putpixel((x,y),(red,green,blue))
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j.save('shading.png')

‎ContrastAlgo.py‎

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#Author SriVennelaVaishnapu
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#Email [email protected]
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#Contrast Algorithm
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#factor = (259 * (contrast + 255)) / (255 * (259 - contrast))
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#colour = GetPixelColour(x, y)
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#newRed = Truncate(factor * (Red(colour) - 128) + 128)
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#newGreen = Truncate(factor * (Green(colour) - 128) + 128)
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#newBlue = Truncate(factor * (Blue(colour) - 128) + 128)
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#PutPixelColour(x, y) = RGB(newRed, newGreen, newBlue)
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#Procedure Truncate(value)
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# If value < 0 Then value = 0
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# If value > 255 Then value = 255
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# Return value
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#EndProcedure
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from PIL import Image
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i = Image.open("input.png")
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#debugging purpose
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#print(i.format,i.size,i.mode)
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#pixel data is stored in pixels in form of two dimensional array
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pixels = i.load() # this is not a list, nor is it list()'able
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width, height = i.size
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j=Image.new(i.mode,i.size)
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contrast=input("enter contrast value range:-255 to 255")
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def Truncate(value):
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if(value < 0):
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value = 0
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if(value > 255):
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value = 255
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return value
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for x in range(width):
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for y in range(height):
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cpixel = pixels[x, y]
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factor = (259 * (contrast + 255)) / (255 * (259 - contrast))
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#cpixel[0] contains red value cpixel[1] contains green value
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#cpixel[2] contains blue value cpixel[3] contains alpha value
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newRed = Truncate((factor * (cpixel[0] - 128) + 128))
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newGreen = Truncate((factor * (cpixel[1] - 128) + 128))
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newBlue = Truncate((factor * (cpixel[2] - 128) + 128))
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j.putpixel((x,y),(newRed, newGreen, newBlue))
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j.save('output.png')

‎CustomAlgo-BW.py‎

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# Author Sri Vennela Vaishnapu
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# Email [email protected]
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# Custom algorithm
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# ConversionFactor = 255 / (NumberOfShades - 1)
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# AverageValue = (Red + Green + Blue) / 3
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# Gray = Integer((AverageValue / ConversionFactor) + 0.5) * ConversionFactor
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from PIL import Image
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import random
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i = Image.open("input.png")
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#pixel data is stored in pixels in form of two dimensional array
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pixels = i.load()
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width, height = i.size
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j=Image.new(i.mode,i.size)
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#selects the random no of shades between 2 to 256 including 2 and 256
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NumberOfShades = int(random.random()*255)+2
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ConversionFactor = 255 / (NumberOfShades - 1)
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for x in range(width):
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for y in range(height):
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cpixel = pixels[x, y]
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#cpixel[0] contains red value cpixel[1] contains green value
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#cpixel[2] contains blue value cpixel[3] contains alpha value
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AverageValue = (cpixel[0] + cpixel[1] + cpixel[2]) / 3
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gray = int(((AverageValue / ConversionFactor) + 0.5) * ConversionFactor)
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j.putpixel((x,y),(gray,gray,gray))
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j.save('output.png')

‎DesaturationAlgo-BW.py‎

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#Author SriVennela Vaishnapu
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#Email [email protected]
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#Desaturation Algorithm
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#Gray = ( Max(Red, Green, Blue) + Min(Red, Green, Blue) ) / 2
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from PIL import Image
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import math
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import random
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i = Image.open("input.png")
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#pixel data is stored in pixels in form of two dimensional array
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pixels = i.load()
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width, height = i.size
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j=Image.new(i.mode,i.size)
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#loop for storing each pixel of original image in new variable cpixel
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for x in range(width):
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for y in range(height):
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cpixel = pixels[x, y]
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#cpixel[0] is for red value cpixel[1] is for green value cpixel[2] is for blue value
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Gray = int( max(cpixel[0],cpixel[1],cpixel[2]) +min(cpixel[0],cpixel[1],cpixel[2]) ) / 2
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j.putpixel((x,y),(Gray,Gray,Gray))
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j.save('output.png')

‎ErrorDiffusionAlgo.py‎

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#Authors Bhargav K,SriVennelaVaishnapu
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#Email [email protected]
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#Error Diffusion Algorithm
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#error = actualColour - nearestColour
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#PutPixelColour(x+1, y ) = Truncate(GetPixelColour(x+1, y ) + 0.5 * error)
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#PutPixelColour(x , y+1) = Truncate(GetPixelColour(x , y+1) + 0.5 * error)
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#Procedure Truncate(value)
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# If value < 0 Then value = 0
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# If value > 255 Then value = 255
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# Return value
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#EndProcedure
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from PIL import Image
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i = Image.open("lena.jpg")
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#debugging purpose
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#print(i.format,i.size,i.mode)
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#pixel data is stored in pixels in form of two dimensional array
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pixels = i.load()# this is not a list, nor is it list()'able
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width, height = i.size
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j=Image.new(i.mode,i.size)
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def Truncate(value):
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if(value < 0):
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value = 0
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if(value > 255):
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value = 255
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return value
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def Error(value):
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if(value >= 0 and value <=127):
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return 0
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else:
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return 128
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for x in range(width-1):
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for y in range(height-1):
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cpixel = pixels[x, y]
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#cpixel[0] contains red value cpixel[1] contains green value
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#cpixel[2] contains blue value cpixel[3] contains alpha value
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error_red = cpixel[0]-Error(cpixel[0])
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error_green = cpixel[1]-Error(cpixel[1])
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error_blue = cpixel[2]-Error(cpixel[2])
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apixel= pixels[x+1,y]
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bpixel= pixels[x,y+1]
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j.putpixel((x+1, y ),(int(Truncate(apixel[0] + 0.5 * error_red)),int(Truncate(apixel[1]+0.5*error_blue)),int(Truncate(apixel[2]+0.5*error_green))))
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j.putpixel((x , y+1),(int(Truncate(bpixel[0] + 0.5 * error_red)),int(Truncate(bpixel[1]+0.5*error_blue)),int(Truncate(bpixel[2]+0.5*error_green))))
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j.save('error.png')

‎GammaCorrectionAlgo.py‎

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#Authors SriVennelaVaishnapu
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#Email [email protected]
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#Gamma correction Algorithm
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#gammaCorrection = 1 / gamma
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#colour = GetPixelColour(x, y)
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#newRed = 255 * (Red(colour) / 255) ^ gammaCorrection
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#newGreen = 255 * (Green(colour) / 255) ^ gammaCorrection
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#newBlue = 255 * (Blue(colour) / 255) ^ gammaCorrection
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#PutPixelColour(x, y) = RGB(newRed, newGreen, newBlue)
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from PIL import Image
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import random
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i = Image.open("input.png")
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#debugging purpose
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#print(i.format,i.size,i.mode)
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#pixel data is stored in pixels in form of two dimensional array
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pixels = i.load() # this is not a list, nor is it list()'able
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width, height = i.size
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j=Image.new(i.mode,i.size)
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gamma=input("enter the value of gamma range:0.25 to 2.0")
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for x in range(width):
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for y in range(height):
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cpixel = pixels[x, y]
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#gamma value can range from 0.25 to 2.0
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gammaCorrection = 1 / gamma
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#cpixel[0] contains red value cpixel[1] contains green value
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#cpixel[2] contains blue value cpixel[3] contains alpha value
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newRed = int(255 * ((cpixel[0]/ 255.0)**gammaCorrection))
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newGreen = int(255 * ((cpixel[1]/ 255.0)**gammaCorrection))
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newBlue = int(255 * ((cpixel[2]/ 255.0)**gammaCorrection))
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j.putpixel((x,y),(newRed, newGreen, newBlue))
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j.save('output.png')

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