如何让一幅图像经历许多由概率权重决定的函数？

Question

我有一个标志。我现在正在做的是为所有这些功能设置概率权重，并且徽标一次只转到其中一个，具体取决于它的概率值。这是我的代码：

augmentation_func = [(random_rotation, [brand_logo]),
                             (blurring, [brand_logo]),
                             (compression, [brand_logo]),
                             (portion_covering, [brand_logo, brand_logo_width, brand_logo_height]),
                             (perspective_transform, [logo_image, brand_logo_width, brand_logo_height]),
                             (overlaying, [logo_path]),
                             (logo_background, [logo_path])]

        (augs, args), = random.choices(augmentation_func, weights=[10,5,15,20,20,15,15])

        new_logo = random_resize(augs(*args), gameplay)

但是，这还不够。标志应该能够通过多种功能。例如。徽标可能会经过 random_rotation()、perspective_transformation() 和 overlaying()。它是否会通过一个函数应该取决于它的概率权重。这是我的想法：

如何调整我的代码，使徽标根据权重经历许多转换函数？

Answer 1

每个操作发生的几率是否独立于其他操作？那么 random.choice() 不是正确的解决方案，因为它只选择了一项。相反，对于每个项目，以其相应的概率选择它。例如：

if random.randrange(0, 100) < 10:
    # Crop the image (in place) at a 10% chance.
    # The chance of cropping is independent
    # of the chances of any other operation.
    brand_logo = cropping(brand_logo)
    
if random.randrange(0, 100) < 15:
    # Rotate the image (in place) at a 15% chance.
    # The chance of rotating is independent
    # of the chances of any other operation.
    brand_logo = rotating(brand_logo)

如何让一幅图像经历许多由概率权重决定的函数？

How to have an image go through many functions determined by probability weights?

python

random

python-imaging-library

probability

image-augmentation