mmagic.models.editors.lsgan.lsgan_discriminator

Module Contents

Classes

LSGANDiscriminator

Discriminator for LSGAN.

class mmagic.models.editors.lsgan.lsgan_discriminator.LSGANDiscriminator(input_scale=128, output_scale=8, out_channels=1, in_channels=3, base_channels=64, conv_cfg=dict(type='Conv2d'), default_norm_cfg=dict(type='BN'), default_act_cfg=dict(type='LeakyReLU', negative_slope=0.2), out_act_cfg=None, init_cfg=None)

Bases: mmengine.model.BaseModule

Discriminator for LSGAN.

Implementation Details for LSGAN architecture:

1. Adopt convolution in the discriminator;

2. Use batchnorm in the discriminator except for the input and final output layer;

3. Use LeakyReLU in the discriminator in addition to the output layer;

4. Use fully connected layer in the output layer;

5. Use 5x5 conv rather than 4x4 conv in DCGAN.

Parameters

• input_scale (int, optional) – The scale of the input image. Defaults to 128.

• output_scale (int, optional) – The final scale of the convolutional feature. Defaults to 8.

• out_channels (int, optional) – The channel number of the final output layer. Defaults to 1.

• in_channels (int, optional) – The channel number of the input image. Defaults to 3.

• base_channels (int, optional) – The basic channel number of the generator. The other layers contains channels based on this number. Defaults to 128.

• conv_cfg (dict, optional) – Config for the convolution module used in this discriminator. Defaults to dict(type=’Conv2d’).

• default_norm_cfg (dict, optional) – Norm config for all of layers except for the final output layer. Defaults to dict(type='BN').

• default_act_cfg (dict, optional) – Activation config for all of layers except for the final output layer. Defaults to dict(type='LeakyReLU', negative_slope=0.2).

• out_act_cfg (dict, optional) – Activation config for the final output layer. Defaults to dict(type='Tanh').

• init_cfg (dict, optional) – Initialization config dict.

forward(x)

Forward function.

Parameters

x (torch.Tensor) – Fake or real image tensor.

Returns

Prediction for the reality of the input image.

Return type

torch.Tensor