  The human brain possesses remarkable abilities in visual processing,
including image recognition and scene summarization. Efforts have been made to
understand the cognitive capacities of the visual brain, but a comprehensive
understanding of the underlying mechanisms still needs to be discovered.
Advancements in brain decoding techniques have led to sophisticated approaches
like fMRI-to-Image reconstruction, which has implications for cognitive
neuroscience and medical imaging. However, challenges persist in fMRI-to-image
reconstruction, such as incorporating global context and contextual
information. In this article, we propose fMRI captioning, where captions are
generated based on fMRI data to gain insight into the neural correlates of
visual perception. This research presents DreamCatcher, a novel framework for
fMRI captioning. DreamCatcher consists of the Representation Space Encoder
(RSE) and the RevEmbedding Decoder, which transform fMRI vectors into a latent
space and generate captions, respectively. We evaluated the framework through
visualization, dataset training, and testing on subjects, demonstrating strong
performance. fMRI-based captioning has diverse applications, including
understanding neural mechanisms, Human-Computer Interaction, and enhancing
learning and training processes.
