Question

我正在尝试编写一个函数，该函数将像素作为参数并反转像素中的每种颜色，然后将新颜色值作为元组返回。将不胜感激这是我当前的代码：

IMAGE_URL = "https://codehs.com/uploads/c709d869e62686611c1ac849367b3245"
IMAGE_WIDTH = 280
IMAGE_HEIGHT = 200

image = Image(IMAGE_URL)
image.set_position(70, 70)
image.set_size(IMAGE_WIDTH, IMAGE_HEIGHT)
add(image)

#################################################
# Write your function here. Loop through each pixel
# and set each pixel to have a zero blue value.
#################################################
def remove_blue():
    pass

# Give the image time to load
print("Removing Blue Channel ....")
print("Might take a minute....")
timer.set_timeout(remove_blue, 1000)

Answer 1

from PIL import Image
# open image
image = Image.open('pic.jpeg')
# show the image (optional)
image.show()
# load the image into memory
image_data = image.load()
# obtain sizes
height,width = image.size
# loop over and change blue value to 0
for loop1 in range(height):
    for loop2 in range(width):
        r,g,b = image_data[loop1,loop2]
        image_data[loop1,loop2] = r,g,0

image.save('changed.jpeg')

对应的函数是

def remove_blue(image):
   
   image = Image.open('pic.jpeg')
   # show the image (optional)
   image.show()
   # load the image into memory
   image_data = image.load()
   # obtain sizes
   height,width = image.size
   # loop over and change blue value to 0
   for loop1 in range(height):
       for loop2 in range(width):
           r,g,b = image_data[loop1,loop2]
           image_data[loop1,loop2] = r,g,0
 # return image
   image.save('changed.jpeg')

python中的蓝色图像过滤器

1 个答案: