Input image data define an input image (10) that shows a row/column representation (12), such as a table; a matrix; an array; a calendar; a two-dimensional connection diagram such as a programmable logic array (PLA) diagram; a puzzle or game diagram such as a crossword puzzle, a chess or checkers diagram, a go game diagram, or ticktacktoe. The input image data are used to obtain row data (20) and column data (22). The row data (20) indicate parts of the input image within a row of the row/column representation (12). The column data (22) indicate parts of the input image within a column of the row/column representation. The row data and column data are used to obtain content data indicating information represented by the row/column representation for the combination of the row and the column. The content data (24) can be used to obtain output image data defining an output image that includes a table or other representation of the information represented by the row/column representation (12) for each row/column combination. The input image can show a sketch of a row/column representation and the content data can be used to obtain output image data defining an output image that includes a precisely formed row/column representation similar to the sketch.
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