A computer-implemented method, according to one embodiment, comprises obtaining a hierarchy for a first image of a document, where the hierarchy is a multi-level structured logical tree defining different regions of the first image. The method further includes using the hierarchy to formulate a first connected structure from a first region of the first image, where the formulation of the first connected structure includes: formulating text elements of cells of the first connected structure and assigning meanings to the text elements. The method further includes using the assigned meanings to identify a first subset of the cells of the first connected structure that make up a first table. A computer program product, according to another embodiment, comprises a computer-readable storage medium having program code embodied therewith. The program code is executable by a computing device to cause the computing device to perform the foregoing method.