I want to do augmentation "colortransform" but what is the op??

[leesangjoon1]

I want to do the augmentation "color transform" but It need op. what is the op ??

I want to add it at train_net.py

so I add this code.

def build_sem_seg_train_aug(cfg):

augs = []

augs.append(T.RandomBrightness(0.9,1.1))
augs.append(T.ColorTransform(cfg))

return augs

@classmethod
def build_train_loader(cls, cfg):
if "GeneralizedRCNN" in cfg.MODEL.META_ARCHITECTURE:
mapper = DatasetMapper(cfg, is_train=True, augmentations=build_sem_seg_train_aug(cfg))
else:
mapper = None
return build_detection_train_loader(cfg, mapper=mapper)

but the error comes up "value error : op parameter should be callable"

please help me

Thank you!