  In an era where images and visual content dominate our digital landscape, the
ability to manipulate and personalize these images has become a necessity.
Envision seamlessly substituting a tabby cat lounging on a sunlit window sill
in a photograph with your own playful puppy, all while preserving the original
charm and composition of the image. We present Photoswap, a novel approach that
enables this immersive image editing experience through personalized subject
swapping in existing images. Photoswap first learns the visual concept of the
subject from reference images and then swaps it into the target image using
pre-trained diffusion models in a training-free manner. We establish that a
well-conceptualized visual subject can be seamlessly transferred to any image
with appropriate self-attention and cross-attention manipulation, maintaining
the pose of the swapped subject and the overall coherence of the image.
Comprehensive experiments underscore the efficacy and controllability of
Photoswap in personalized subject swapping. Furthermore, Photoswap
significantly outperforms baseline methods in human ratings across subject
swapping, background preservation, and overall quality, revealing its vast
application potential, from entertainment to professional editing.
