Classification models 1D Zoo - Keras and TF.Keras
This repository contains 1D variants of popular CNN models for classification like ResNets, DenseNets, VGG, etc. It also contains weights obtained by converting ImageNet weights from the same 2D models. It can be useful for classification of audio or some timeseries data.
This repository is based on great classification_models repo by @qubvel
Architectures:
- VGG [16, 19]
- ResNet [18, 34, 50, 101, 152]
- ResNeXt [50, 101]
- SE-ResNet [18, 34, 50, 101, 152]
- SE-ResNeXt [50, 101]
- SE-Net [154]
- DenseNet [121, 169, 201]
- Inception ResNet V2
- Inception V3
- MobileNet
- MobileNet v2
- EfficientNet
- EfficientNet v2
Installation
pip install classification-models-1D
Examples
Loading model:
from classification_models_1D.tfkeras import Classifiers
ResNet18, preprocess_input = Classifiers.get('resnet18')
model = ResNet18(input_shape=(224*224, 2), weights='imagenet')
All possible nets for Classifiers.get() method: 'resnet18', 'resnet34', 'resnet50', 'resnet101', 'resnet152', 'seresnet18', 'seresnet34', 'seresnet50', 'seresnet101', 'seresnet152', 'seresnext50', 'seresnext101', 'senet154', 'resnext50', 'resnext101', 'vgg16', 'vgg19', 'densenet121', 'densenet169', 'densenet201', 'mobilenet', 'mobilenetv2', 'inceptionresnetv2', 'inceptionv3', 'EfficientNetB0', 'EfficientNetB1', 'EfficientNetB2', 'EfficientNetB3', 'EfficientNetB4', 'EfficientNetB5', 'EfficientNetB6', 'EfficientNetB7', 'EfficientNetV2B0', 'EfficientNetV2B1', 'EfficientNetV2B2', 'EfficientNetV2B3', 'EfficientNetV2S', 'EfficientNetV2M', 'EfficientNetV2L'
Convert imagenet weights (2D -> 1D)
Code to convert 2D imagenet weights to 1D variant is available here: convert_imagenet_weights_to_1D_models.py.
How to choose input shape
If initial 2D model had shape (224, 224, 3) then you can use shape (W, 3) where W ~= 224*224, so something like (224*224, 2) will be ok.
Additional features
- Default pooling/stride size for 1D models set equal to 4 to match (2, 2) pooling for 2D nets. Kernel size by default is 9 to match (3, 3) kernels. You can change it for your needs using parameters
stride_sizeandkernel_size. Example:
from classification_models_1D.tfkeras import Classifiers
ResNet18, preprocess_input = Classifiers.get('resnet18')
model = ResNet18(
input_shape=(224*224, 2),
stride_size=6,
kernel_size=3,
weights=None
)
- You can set different pooling for each pooling block. For example you don't need pooling at first convolution. You can do it using tuple as value for
stride_size:
from classification_models_1D.tfkeras import Classifiers
ResNet18, preprocess_input = Classifiers.get('resnet34')
model = ResNet18(
input_shape=(65536, 2),
stride_size=(1, 4, 4, 8, 8),
kernel_size=9,
weights='imagenet'
)
- For some models like (resnet, resnext, senet, vgg16, vgg19, densenet) it's possible to change number of blocks/poolings. For example if you want to switch to pooling/stride = 2 but make more poolings overall. You can do it like that:
from classification_models_1D.tfkeras import Classifiers
ResNet18, preprocess_input = Classifiers.get('resnet34')
model = ResNet18(
input_shape=(224*224, 2),
include_top=False,
weights=None,
stride_size=(2, 4, 4, 4, 2, 2, 2, 2),
kernel_size=3,
repetitions=(2, 2, 2, 2, 2, 2, 2),
init_filters=16,
)
Note: Since number of filters grows 2 times, you can set initial number of filters with init_filters parameter.
Pretrained weights
Imagenet
Imagenet weights available for all models except ('inceptionresnetv2', 'inceptionv3'). They available only for kernel_size == 3 or kernel_size == 9 and 2 channel input (e.g. stereo sound). Weights were converted from 2D models to 1D variant. Weights can be loaded with any pooling scheme.
Related repositories
- https://github.com/qubvel/classification_models - original 2D repo
- https://github.com/ZFTurbo/classification_models_3D - 3D variant repo
ToDo List
- Create pretrained weights obtained on AudioSet
14 Sep 13, 2022
7 Jan 24, 2022
8 Nov 2, 2022
19 Dec 10, 2022
8 Oct 29, 2022
})
3 Dec 1, 2022
5.7k Jan 9, 2023
1.8k Jan 8, 2023
72 Nov 30, 2022
9 Nov 28, 2022
5 Dec 18, 2022
63 Dec 15, 2022
32 Jan 05, 2023
368 Dec 26, 2022
152 Jan 07, 2023
502 Jan 03, 2023
62 Dec 12, 2022
411 Dec 05, 2022
2 Oct 02, 2022
32 Dec 11, 2022
81 Jan 04, 2023
426 Dec 08, 2022
65 Oct 04, 2022
1 Nov 17, 2021
49 Dec 01, 2022
226 Nov 05, 2022
524 Jan 08, 2023
2 Jan 07, 2022
3 May 17, 2022