Hi @Scott_Hoang,  yes i’m using imageaug lib with this augmentation i used :
aug = iaa.SomeOf(2, [
                iaa.AdditiveGaussianNoise(scale=(0,0.1*255)),
                iaa.Add((-40,40), per_channel=True),
                iaa.Sharpen(alpha=(0, 0.5)),
                iaa.Dropout(p=(0,0.15)),
                iaa.GaussianBlur(sigma=(0.0, 1.5)),
                iaa.MotionBlur(k=blur)
            ])

and combine with
random_shear
random_rotate
random_scale
random_horizontal_flip
random_vertical_flip

also my objects are diverse, small but not so small and large object