Title
Amplitude Spectrum Transformation for Open Compound Domain Adaptive Semantic Segmentation.
Abstract
Open compound domain adaptation (OCDA) has emerged as a practical adaptation setting which considers a single labeled source domain against a compound of multi-modal unlabeled target data in order to generalize better on novel unseen domains. We hypothesize that an improved disentanglement of domain-related and task-related factors of dense intermediate layer features can greatly aid OCDA. Prior-arts attempt this indirectly by employing adversarial domain discriminators on the spatial CNN output. However, we find that latent features derived from the Fourier-based amplitude spectrum of deep CNN features hold a more tractable mapping with domain discrimination. Motivated by this, we propose a novel feature space Amplitude Spectrum Transformation (AST). During adaptation, we employ the AST auto-encoder for two purposes. First, carefully mined source-target instance pairs undergo a simulation of cross-domain feature stylization (AST-Sim) at a particular layer by altering the AST-latent. Second, AST operating at a later layer is tasked to normalize (AST-Norm) the domain content by fixing its latent to a mean prototype. Our simplified adaptation technique is not only clustering-free but also free from complex adversarial alignment. We achieve leading performance against the prior arts on the OCDA scene segmentation benchmarks.
Year
DOI
Venue
2022
10.1609/aaai.v36i2.20008
AAAI Conference on Artificial Intelligence
Keywords
DocType
Citations 
Computer Vision (CV),Machine Learning (ML),Domain(s) Of Application (APP)
Conference
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Jogendra Nath Kundu1146.29
Akshay Kulkarni201.69
Suvaansh Bhambri301.01
Varun Jampani418419.44
R. Venkatesh Babu5104684.83