Input-shape

[doaaobeidat]

Hi, If I want to use CT scans , so the width is 128, length 128 and the depth for example 96, how can I use Resnet

[ZFTurbo]

Like this:

from classification_models_3D.tfkeras import Classifiers

ResNet18, preprocess_input = Classifiers.get('resnet18')
model = ResNet18(input_shape=(128, 128, 96, 1), weights='imagenet')

[doaaobeidat]

When I made what you have mentioned it gives me error about unequal axis, how can I can use these models if I want to use input_shape=(128, 128, 96, 1) and input_shape=(128, 128, 96, 3)

[ZFTurbo]

I need more details about your error.

[doaaobeidat]

From what I gather from your explanation, it seems that I can utilize your pretrained models, which have already undergone the conversion of image weights from 2D to 3D. Therefore, my implementation would look something like this:
from keras_applications import Classifiers
from tensorflow.keras.layers import GlobalAveragePooling3D, Dense, Dropout
from tensorflow.keras.models import Model

Retrieve the DenseNet121 model and its associated preprocessing function

densenet121, preprocess_input = Classifiers.get('densenet121')

Create my model architecture based on the pretrained DenseNet121

model = densenet121(input_shape=(96, 96, 96, 1), weights=None, include_top=False)
x = GlobalAveragePooling3D()(model.output)
x = Dense(units=256, activation="relu")(x)
x = Dropout(0.7)(x)
outputs = Dense(units=1, activation="sigmoid")(x)

Assemble the final model

model = Model(model.input, outputs=outputs, name="densenet121")

[ZFTurbo]

To use imagenet weights you need to use shape which has 3 channels: "(96, 96, 96, 3)", it's actually not to much complicate model - only 1st layer changed. You can duplicate input 3 times with x = np.stack([x, x, x], axis=-1)