Hi seniors,
I am using a medical dataset, containing 2232 .png images of  256x256 resolution, to train my Pytorch based CNN model from scratch. I performed a vertical and a horizontal flip transforms on dataset separately. Now each original, and vertically and horizontally flipped datasets contain 2232 images.
I want to append (or say, make all dataset in one tensor) all the dataset to make of 3*2232  = 6696 images. A code snippet is given below:
orig_transform = transforms.Compose([
    transforms.ToTensor(),
    transforms.Normalize(mean=(0.1565,),std=(0.1668,))
    ])
HorizFlip = transforms.Compose([
    transforms.RandomHorizontalFlip(p=1),
    transforms.ToTensor(),
    transforms.Normalize(mean=(0.1565,),std=(0.1668,)),
    
])

VertiFlip = transforms.Compose([
    transforms.RandomVerticalFlip(p=1),
    transforms.ToTensor(),
    transforms.Normalize(mean=(0.1565,),std=(0.1668,)),

])

orig_dataset = MRI_Dataset(csv_file = 'C:/Users/Block-03-EE/AnacondaFiles/RecordWise/tr_file.csv',
                    root_dir = 'C:/Users/Block-03-EE/AnacondaFiles/RecordWise/training_data',
                    # root_dir = './tumor_data/MinMax/original_image',
                    transform =  orig_transform
                    )

verti_dataset = MRI_Dataset(csv_file = 'C:/Users/Block-03-EE/AnacondaFiles/RecordWise/tr_file.csv',
                    root_dir = 'C:/Users/Block-03-EE/AnacondaFiles/RecordWise/training_data',
                    # root_dir = './tumor_data/MinMax/original_image',
                    transform =  HorizFlip
                    )

horiz_dataset = MRI_Dataset(csv_file = 'path/traning_file.csv',
                    root_dir = 'C:/Users/Block-03-EE/AnacondaFiles/RecordWise/training_data',
                    # root_dir = './tumor_data/MinMax/original_image',
                    transform =  VertiFlip
                    )

The MRI_dataset is a class that pics each individual image and it’s corresponding label – with the help of .csv file – form local directory. This code is taken from Alading Persons Youtube video.
I need following magic operation or any idea that would work in my case.
dataset = <magic operation>(orig_dataset, horiz_dataset,verti_dataset)

Please help me in this regards.
Thank you!
PS: I am new to Pytorch