How can Python achieve the image filter effect?

Python can utilize the PIL library (Python Imaging Library) to achieve image filter effects. Below is an example code using the PIL library to implement image filters.

from PIL import Image, ImageFilter

# 打开图片
image = Image.open('input.jpg')

# 应用滤镜效果
filtered_image = image.filter(ImageFilter.BLUR)

# 保存滤镜后的图片
filtered_image.save('output.jpg')

In the example code above, the image file to be processed is first opened using the Image.open() function. Then, a filter effect is applied using the image.filter() function, with ImageFilter.BLUR representing the blur filter effect. Finally, the filtered image is saved using filtered_image.save() function.

You can choose different filter effects as needed, the PIL library provides various predefined filters such as BLUR, CONTOUR, EMBOSS, etc. You can also customize filter effects by creating custom filter matrices for different effects.