METHOD FOR RECOGNISING CHEMICAL INFORMATION FROM IMAGES OF DOCUMENT AND SYSTEM FOR IMPLEMENTATION THEREOF Russian patent published in 2022 - IPC G06V30/19 G06T1/40 

FIELD: computing technology.

SUBSTANCE: invention relates to the field of computing technology for data recognition. The computer-implemented method includes the following stages: inputting an image of a document page into a detector; the detector identifying fragments on the page; obtaining coordinates of the fragment on the page for each identified fragment; and classifying the fragments; the structure recognition unit recognises the chemical structure for each fragment; inputting the identified reaction arrow fragments into the arrow recognition unit; obtaining coordinates on the page for each arrow and attributes of the reaction; supplying the coordinates on the page to the input of the reaction recognition unit for each fragment of the recognised chemical structures; and, based on the received data, the reaction recognition unit determines the relation between the arrows and the recognised chemical structures; recognised chemical structures are obtained as a result based on the recognised data for the image of a document page.

EFFECT: ensured automatic recognition of chemical information from images of documents, reduction in the duration and increase in the accuracy of recognition of chemical information from images of documents.

17 cl, 7 dwg