[单选]  下面两张图片中，图片1为原图，图片2为处理后的图像，这种变化使用了（）滤镜效果。:3O7-9VFGN7rECFa7buN10h6afySvxpUBlQGvn0GxGx8vzL6MLml58g-KK3kKUL628n7QXmq8Y+GAVXYPhre1VJVBlQGVAZUBmYQA6qwnUEfW62qyoDKgMqAysCjYUAVto+Gd7VUlQGVAZUBlYEZxIAqbGfQx1arqjKgMqAyoDLwaBhQhe2j4V0tVWVAZUBlQGVgBjGgCtsZ9LHVqqoMqAyoDKgMPBoGVGH7aHhXS1UZUBlQGVAZmEEMqMJ2Bn1staoqAyoDKgMqA4+Ggf8HCURtcz9IvdwAAAAASUVORK5CYII=