The proposed detail-enhancing framework can be extended to handle multiple reference images by incorporating a mechanism for selecting and integrating information from multiple references. This extension would involve modifying the feature extraction and alignment stages to consider multiple reference images during the matching process. One approach could be to aggregate features from different reference images at each scale and use a weighted fusion mechanism to combine the information.
However, handling multiple reference images introduces several challenges. One challenge is the potential inconsistency in texture and content across different reference images, which may lead to conflicts in feature alignment and transfer. Another challenge is the increased computational complexity involved in processing multiple reference images simultaneously, which could impact the efficiency of the framework. Additionally, ensuring accurate alignment and transfer of details from multiple references while maintaining coherence and consistency in the final output poses a significant challenge that needs to be addressed in the extension of the framework.