def main():
fileInput = "C:\Programming\CS138\Week 8\canoe.gif"
fileOutput = "C:\Programming\CS138\Week 8\grayCanoe.gif"
image = Image(Point(400, 300), fileInput) # Getting our image.
width = image.getWidth()
height = image.getHeight()
win = GraphWin("Monochromatic Conversion", width,
height) # Creating our window.
image.draw(win)
row = 0 # The starting pixel for our x-axis
column = 0 # The starting pixel for our y-axis
win.getMouse()
for row in range(image.getWidth()):
for column in range(image.getHeight()):
r, g, b = image.getPixel(row, column)
brightness = int(round(0.299 * r + 0.587 * g + 0.114 * b))
image.setPixel(row, column,
color_rgb(brightness, brightness, brightness))
win.update()
image.save(fileOutput)
win.getMouse()
win.close()
x = 0
y = 0
rgb_ppm = Image(Point(colours_per_row / 2, colours_per_row / 2),
colours_per_row, colours_per_row)
num_colours_set = 0
for r in range(0, 256):
for g in range(0, 256):
for b in range(0, 256):
# First pixel is x,y = 0,0 and rgb = 0,0,0
rgb_ppm.setPixel(x, y, color_rgb(r, g, b))
num_colours_set += 1
# Increment x until x = the number of colours needed
x = x + 1
if x == colours_per_row:
x = 0
y = y + 1
print(x, y, r, g, b)
rgb_ppm.save("rgb.ppm")
rgb_png = PILImage.open("rgb.ppm")
rgb_png.save("rgb.png", "PNG")
end = time.time()