The invention discloses a cross-
modal hash retrieval method and
system based on supervised semantic
coupling consistency, and the method comprises the steps: extracting the features of
modal sample data in each
modal database, and constructing a sample
library set; solving a hash code of each modal sample in the sample
library set; extracting features of the to-be-retrieved
modal data, and solvinghash codes of the to-be-retrieved
modal data according to the features; and comparing the hash code of the to-be-retrieved
modal data with the hash code of each modal sample, wherein the modal sampleof which the comparison result meets the preset condition is used as the
retrieval result of the to-be-retrieved modal data. According to the method, the high-level
semantic relationship is considered, and the inline
coupling between the modals is also considered, so that the modals not only can supervise and learn the hash codes of the modals, but also can keep the
semantic consistency between the modals. According to the method, the discrimination strength and compactness robustness of the hash code can be effectively improved, the retrieval rate between
modes is increased, and the accuracyof cross-modal retrieval is improved.