Cross-modal hashing has become an active research topic in literatures due to its high efficiency and low storage cost in cross-modal retrieval [1]}, [2]}, [3]}, [4]}. Various techniques have been proposed for CMH. They can be roughly divided into two categories: unsupervised methods and supervised methods.

Cross-modal hashing (CMH) has gained significant attention in the literature due to its efficiency and low storage cost for cross-modal retrieval [1], [2], [3], [4]. There are two main categories of CMH techniques: unsupervised methods and supervised methods.