METHODS AND SYSTEMS FOR PROCESSING OF IMAGES OF MATHEMATICAL EXPRESSIONS

The current document is directed to methods and systems that convert document images containing mathematical expression into corresponding electronic documents. In one implementation, an image or sub-image containing a mathematical expression is recursively partitioned into blocks separated by white-space stripes. Horizontal and vertical partitioning are alternately and recursively applied to the image or sub-image containing a mathematical expression until the lowest-level blocks obtained by partitioning correspond to symbols recognizable by character-recognition methods. Graph-based analysis of the recognized symbols provides a basis for encoding an equivalent representation of the mathematical expression contained in the image or sub-image.