Conditional Convolution Projecting Latent Vectors on Condition-Specific Space

Min Cheol Sagong, Yoon Jae Yeo, Yong Goo Shin, Sung Jea Ko

Research output: Contribution to journalArticlepeer-review


Despite rapid advancements over the past several years, the conditional generative adversarial networks (cGANs) are still far from being perfect. Although one of the major concerns of the cGANs is how to provide the conditional information to the generator, there are not only no ways considered as the optimal solution but also a lack of related research. This brief presents a novel convolution layer, called the conditional convolution (cConv) layer, which incorporates the conditional information into the generator of the generative adversarial networks (GANs). Unlike the most general framework of the cGANs using the conditional batch normalization (cBN) that transforms the normalized feature maps after convolution, the proposed method directly produces conditional features by adjusting the convolutional kernels depending on the conditions. More specifically, in each cConv layer, the weights are conditioned in a simple but effective way through filter-wise scaling and channel-wise shifting operations. In contrast to the conventional methods, the proposed method with a single generator can effectively handle condition-specific characteristics. The experimental results on CIFAR, LSUN, and ImageNet datasets show that the generator with the proposed cConv layer achieves a higher quality of conditional image generation than that with the standard convolution layer.

Original languageEnglish
Article number3172512
Pages (from-to)1386-1393
Number of pages8
JournalIEEE Transactions on Neural Networks and Learning Systems
Issue number1
Publication statusPublished - 2024 Jan 1

Bibliographical note

Publisher Copyright:
© 2012 IEEE.


  • Conditional image generation
  • deep learning
  • generative adversarial networks (GANs)

ASJC Scopus subject areas

  • Software
  • Artificial Intelligence
  • Computer Networks and Communications
  • Computer Science Applications


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