CAMUL: Context-Aware Multiconditional Instance Synthesis for Image Segmentation
Thanh-Danh Nguyen, Trong-Tai Dam Vu, Bich-Nga Pham, Thanh Duc Ngo, Tam Nguyen, Vinh-Tiep Nguyen · IEEE Multimedia · 2025
Instance image segmentation task requires training with abundant annotated data to achieve high accuracy. Recently, conditional image synthesis has demonstrated its effectiveness in generating synthetic data for this task. However, existing image synthesis models face challenges in generating target instances to match the masks with complex shapes. Moreover, others fail to create diverse instances due to utilizing low-context simple text prompts. To address these issues, we propose CAMUL, a framework for context-aware multi-conditional instance synthesis. CAMUL introduces two key innovations: CARP (cross-attention refinement prompting) to enhance the alignment of generated instances with conditional masks, and iCAFF (incremental context-aware feature fusion) to determine the general embeddings of the instances for a more precise context understanding. Our method significantly improves segmentation performance, increasing up to 15.34% AP on Cityscapes and 3.34% AP on the large-scale ADE20K benchmark compared to the baselines. Code is available upon the acceptance of this paper.