def sepiaFilter(image):
width = image.width()
height = image.height()
# Create a new image that is the same size as the original.
newImage = GraphicsImage(width, height)
for row in range(height) :
for col in range(width) :
# Get the color of the pixel in the original image.
red = image.getRed(row, col)
green = image.getGreen(row, col)
blue = image.getBlue(row, col)
# Filter the pixel.
newRed = int((0.393*red) + (0.796*green) + (0.198*blue))
if newRed > 255:
newRed = 255
newGreen = int((0.349*red) + (0.686*green) + (0.168*blue))
if newGreen > 255:
newGreen = 255
newBlue = int((0.272*red) + (0.534*green) + (0.131*blue))
if newBlue > 255:
newBlue = 255
# Set the pixel in the new image to the new color.
newImage.setPixel(row, col, newRed, newGreen, newBlue)
return newImage
def adjustBrightness(image, amount):
width = image.width()
height = image.height()
# Create a new image that is the same size as the original.
newImage = GraphicsImage(width, height)
for row in range(height):
for col in range(width):
# Get the color of the pixel in the original image.
red = image.getRed(row, col)
green = image.getGreen(row, col)
blue = image.getBlue(row, col)
# Adjust the brightness and cap the colors.
newRed = red + red * amount
if newRed > 255:
newRed = 255
elif newRed < 0:
newRed = 0
newGreen = green + green * amount
if newGreen > 255:
newGreen = 255
elif newGreen < 0:
newGreen = 0
newBlue = blue + blue * amount
if newBlue > 255:
newBlue = 255
elif newBlue < 0:
newBlue = 0
# Set the pixel in the new image to the new color.
newImage.setPixel(row, col, newRed, newGreen, newBlue)
return newImage
def edgeDetection(image):
"""
creates a new image that highlights drastics changes in intensity from one pixel to the next
@params image-image to have the edges shown
@returns new image highlighting the edges
"""
width = image.width()
height = image.height()
# Create a new image that is the same size as the original.
newImage = GraphicsImage(width, height)
for row in range(1, height - 1) :
for col in range(1, width - 1) :
reds = [image.getRed(row - 1, col - 1),
image.getRed(row, col - 1),
image.getRed(row + 1, col - 1),
image.getRed(row-1, col),
image.getRed(row+1, col),
image.getRed(row - 1, col + 1),
image.getRed(row, col + 1),
image.getRed(row + 1, col + 1)]
#list of green values around the pixel
greens = [image.getRed(row - 1, col - 1),
image.getGreen(row, col - 1),
image.getGreen(row + 1, col - 1),
image.getGreen(row-1, col),
image.getGreen(row+1, col),
image.getGreen(row - 1, col + 1),
image.getGreen(row, col + 1),
image.getGreen(row + 1, col + 1)]
#list of blue values around the pixel
blues = [image.getRed(row - 1, col - 1),
image.getBlue(row, col - 1),
image.getBlue(row + 1, col - 1),
image.getBlue(row-1, col),
image.getBlue(row+1, col),
image.getBlue(row - 1, col + 1),
image.getBlue(row, col + 1),
image.getBlue(row + 1, col + 1)]
aveIntensity = []
for x in range(8):
aveIntensity.append((reds[x] + greens[x] + blues[x]) // 3)
gX = -1 * (aveIntensity[0] + aveIntensity[2]) + (aveIntensity[5] + aveIntensity[7]) + (2 * aveIntensity[6]) - (2 * aveIntensity[1])
gY = -1 * (aveIntensity[0] + aveIntensity[5]) + (aveIntensity[2] + aveIntensity[7]) + (2 * aveIntensity[4]) - (2 * aveIntensity[3])
tG = int((gX**2 + gY**2)**.5)
if tG >= 128:
tG = 255
else:
tG = 0
newImage.setPixel(row, col, tG, tG, tG)
return newImage
def smooth(image):
"""
enhances grainy images by setting each pixel to the median value of all the pixels around it
@param image - the image to be enhanced
@return the new enhanced image
"""
width = image.width()
height = image.height()
# Create a new image that is the same size as the original.
newImage = GraphicsImage(width, height)
for row in range(1, height - 1) :
for col in range(1, width - 1) :
#list of red values around the pixel
reds = [image.getRed(row, col -1),
image.getRed(row, col+1),
image.getRed(row+1, col),
image.getRed(row-1, col),
image.getRed(row+1, col +1),
image.getRed(row+1, col-1),
image.getRed(row-1, col-1),
image.getRed(row-1, col+1)]
#list of green values around the pixel
greens = [image.getGreen(row, col -1),
image.getGreen(row, col+1),
image.getGreen(row+1, col),
image.getGreen(row-1, col),
image.getGreen(row+1, col +1),
image.getGreen(row+1, col-1),
image.getGreen(row-1, col-1),
image.getGreen(row-1, col+1)]
#list of blue values around the pixel
blues = [image.getBlue(row, col -1),
image.getBlue(row, col+1),
image.getBlue(row+1, col),
image.getBlue(row-1, col),
image.getBlue(row+1, col +1),
image.getBlue(row+1, col-1),
image.getBlue(row-1, col-1),
image.getBlue(row-1, col+1)]
newRed = int(median(reds))#median value of the reds list
newGreen = int(median(greens))#median value of the greens list
newBlue = int(median(blues))#median value of the blues list
# Set the pixel in the new image to the new color.
newImage.setPixel(row, col, newRed, newGreen, newBlue)
return newImage
def rotateLeft(image) :
# Create a new image whose dimensions are the opposite of the original.
width = image.width()
height = image.height()
newImage = GraphicsImage(height, width)
# Rotate the image.
for row in range(height) :
newCol = row
for col in range(width) :
newRow = col
pixel = image.getPixel(row, col)
newImage.setPixel(newRow, newCol, pixel)
return newImage
def flipVertically(image) :
# Create a new image that is the same size as the original.
width = image.width()
height = image.height()
newImage = GraphicsImage(width, height)
# Flip the image vertically.
newRow = height - 1
for row in range(height) :
for col in range(width) :
newCol = col
pixel = image.getPixel(row, col)
newImage.setPixel(newRow, newCol, pixel)
newRow = newRow - 1
return newImage
def colorHistoEqual(image):
width = image.width()
height = image.height()
newImage = GraphicsImage(width, height)
redHisto = []
greenHisto = []
blueHisto = []
for i in range(256):
redHisto.append(0)
greenHisto.append(0)
blueHisto.append(0)
for row in range(height):
for col in range(width):
r, g, b = image.getPixel(row, col)
redHisto[r] += 1
greenHisto[g] += 1
blueHisto[b] += 1
redCDF = []
greenCDF = []
blueCDF = []
redEQ = []
greenEQ = []
blueEQ = []
for j in range(256):
if j > 0:
redCDF.append(redCDF[j-1] + redHisto[j])
greenCDF.append(greenCDF[j-1] + greenHisto[j])
blueCDF.append(blueCDF[j-1] + blueHisto[j])
else:
redCDF.append(redHisto[j])
greenCDF.append(greenHisto[j])
blueCDF.append(blueHisto[j])
redEQ.append(255*redCDF[j] // (width * height))
greenEQ.append(255*greenCDF[j] // (width * height))
blueEQ.append(255*blueCDF[j] // (width * height))
for row in range(height) :
for col in range(width) :
r, g, b = image.getPixel(row, col)
newRed = redEQ[r]
newGreen = greenEQ[g]
newBlue = blueEQ[b]
newImage.setPixel(row, col, newRed, newGreen, newBlue)
return newImage
def greyScale(image):
width = image.width()
height = image.height()
newImage = GraphicsImage(width, height)
for row in range(height):
for col in range(width):
red = image.getRed(row, col)
green = image.getGreen(row, col)
blue = image.getBlue(row, col)
# Filter the pixel.
newRed = int(0.21 * red)
newGreen = int(0.72 * green)
newBlue = int(0.07 * blue)
grey = newRed + newGreen + newBlue
# Set the pixel in the new image to the new color.
newImage.setPixel(row, col, grey, grey, grey)
return newImage
def shrink(image):
width = image.width()
height = image.height()
# Create a new image that is 1/4 the size as the original.
newImage = GraphicsImage(width//2, height//2)
newRow = 0
for row in range(0,height-1, 2) :
newCol = 0
for col in range(0,width-1, 2) :
# _ _
#|1|2|
#|4|3|
#-----This is the manner in which each pixel is evaluated each iteration, then increments by 2 in the col's and row's to evaluate the next grid square
#list of red values in each grid
reds = [image.getRed(row, col),
image.getRed(row, col+1),
image.getRed(row+1, col+1),
image.getRed(row+1, col)]
#list of green values in each grid
greens = [image.getGreen(row, col),
image.getGreen(row, col+1),
image.getGreen(row+1, col+1),
image.getGreen(row+1, col)]
#list of blue values in each grid
blues = [image.getBlue(row, col),
image.getBlue(row, col+1),
image.getBlue(row+1, col+1),
image.getBlue(row+1, col)]
newRed = int(median(reds))#median value of the reds in each grid
newGreen = int(median(greens))#median value of the green in each grid
newBlue = int(median(blues))#median value of the blue in each grid
# Set the pixel in the new image to the new color.
newImage.setPixel(newRow, newCol, newRed, newGreen, newBlue)
newCol = newCol + 1
newRow = newRow + 1
return newImage
def createNegative(image) :
width = image.width()
height = image.height()
# Create a new image that is the same size as the original.
newImage = GraphicsImage(width, height)
for row in range(height) :
for col in range(width) :
# Get the color of the pixel in the original image.
red = image.getRed(row, col)
green = image.getGreen(row, col)
blue = image.getBlue(row, col)
# Filter the pixel.
newRed = 255 - red
newGreen = 255 - green
newBlue = 255 - blue
# Set the pixel in the new image to the new color.
newImage.setPixel(row, col, newRed, newGreen, newBlue)
return newImage
def warpImage(image):
'''This function in complete'''
width = image.width()
height = image.height()
newImage = GraphicsImage(width, height)
for row in range(height):
for col in range(width//6):
r,g,b = image.getPixel(row, col)
newImage.setPixel(row, col, r, g, b)
for row in range(height):
offset = 0
for col in range(width//6, width//3):
if col % 2 == 1:
r,g,b = image.getPixel(row, col)
newImage.setPixel(row, col - offset, r, g, b)
offset+=1
for row in range(height):
offset = 0
for col in range(width//3, width//2):
if col % 2 == 1:
r,g,b = image.getPixel(row, col)
offset+=2
newImage.setPixel(row, col - offset, r, g, b)
for row in range(height):
offset = (2*width//3 - width//2)//2
for col in range(width//2, 2*width//3):
if col % 2 == 1:
r,g,b = image.getPixel(row, col)
offset -= 2
newImage.setPixel(row, col + offset, r, g, b)
for row in range(height):
offset = (5*width//6 - 2*width//3)//2
for col in range(2*width//3, 5*width//6):
if col % 2 == 1:
r,g,b = image.getPixel(row, col)
offset-=1
newImage.setPixel(row, col + offset, r, g, b)
for row in range(height):
for col in range(5*width//6, width):
r,g,b = image.getPixel(row, col)
newImage.setPixel(row, col, r, g, b)
return newImage
# Load the original image.
origImage = GraphicsImage(filename)
# Create an empty image that will contain the new flipped image.
width = origImage.width()
height = origImage.height()
newImage = GraphicsImage(width, height)
# Iterate over the image and copy the pixels to the new image to
# produce the flipped image (vertical flip to an upside down image)
newRow = height - 1
for row in range(height):
for col in range(width):
newCol = col
pixel = origImage.getPixel(row, col)
newImage.setPixel(newRow, newCol, pixel)
newRow = newRow - 1
# Save the new image with a new name.
newImage.save("flipped-" + filename)
# 5. Textbook R.29
# show only the green component of each pixel of the image to green
# Draw the image
win = GraphicsWindow()
canvas = win.canvas()
canvas.drawImage(newImage)
win.wait()
# Load the image from the file.
image = GraphicsImage(filename)
# Process the image.
width = image.width()
height = image.height()
for row in range(height):
for col in range(width):
# Get the current pixel color.
red = image.getRed(row, col)
green = image.getGreen(row, col)
blue = image.getBlue(row, col)
# Filter the pixel.
newRed = 255 - red
newGreen = 255 - green
newBlue = 255 - blue
# Set the pixel to the new color.
image.setPixel(row, col, newRed, newGreen, newBlue)
# Display the image on screen.
win = GraphicsWindow()
canvas = win.canvas()
canvas.drawImage(image)
win.wait()
# Save the new image with a new name.
image.save("negative-" + filename)
radius = width // 2
#set up the effect color to white(255,255,255)
newRed = 255
newBlue = 255
newGreen = 255
# newRow is row number of new image
newRow = 0
for row in range(height): #go through every row
# outer loop is top-down
for col in range(width): #go through column
#inner loop is left-to-right
newCol = col
if sqrt((width / 2 - col)**2 + (height / 2 - row)**2) <= radius:
green = int(0.7152 * origImage.getGreen(row, col))
red = int(0.2126 * origImage.getRed(row, col))
blue = int(0.0722 * origImage.getBlue(row, col))
gray = green + red + blue
newImage.setPixel(newRow, newCol, gray, gray,
gray) #paste to new image
else:
newImage.setPixel(newRow, newCol, newRed, newGreen,
newBlue) # paste to new image
newRow = newRow + 1
# Save the new image with "Black".
newImage.save("black-" + filename)
# Draw the telescoped image
win = GraphicsWindow()
canvas = win.canvas()
canvas.drawImage(newImage)
win.wait()
else:
HEIGHT = picture.height()
WIDTH = picture.width()
#Find middle point
HeightRow = HEIGHT // 2
WidthCol = WIDTH // 2
newimage = GraphicsImage(WIDTH, HEIGHT)
#For future use
#To do : make a square pic
'''
Main function
'''
print("Processing Images....Please Wait...")
#Find pixel
for row in range(HEIGHT):
for col in range(WIDTH):
if sqrt((row - HeightRow)**2 + (col - WidthCol)**2) <= HEIGHT // 2:
red = round(picture.getRed(row, col) * 0.2126)
green = round(picture.getGreen(row, col) * 0.07152)
blue = round(picture.getGreen(row, col) * 0.0722)
gray = red + green + blue
newimage.setPixel(row, col, gray, gray, gray)
else:
newimage.setPixel(row, col, 255, 255, 255)
newimage.save(os.path.join(
__location__, 'queen-mary_lab3.gif')) #Change if you want another pic
print("Done")
print("Output image has been put into same folder name:'queen-mary_lab3.gif'")
canvas = win.canvas()
imageWidth = origImage.width()
imageHeight = origImage.height()
# define new image dimensions
newImage = GraphicsImage(imageWidth, imageHeight)
# output the size of image
print(imageWidth)
print(imageHeight)
# edit the image
for row in range(imageHeight):
for col in range(imageWidth):
red = origImage.getRed(row, col)
newRed = int(red * 1.3)
# if the red exceed the RGB range, it will set to the maximum
if newRed > 255:
newRed = 255
green = origImage.getGreen(row, col)
blue = origImage.getBlue(row, col)
# set the colors of the image
newImage.setPixel(row, col, newRed, green, blue)
# display image
canvas.drawImage(origImage)
canvas.drawImage(newImage)
win.wait()
# output image file
newImage.save("Golden Bridge Sunset.gif")
