Information Extraction and Recognition from Optical Mark Reader Card
Qian Li · Jisuanji gongcheng · 2007
An algorithm for extracting scores and personal information from optical mark reader(OMR) cards has been developed,which takes input images from a scanning device,and locates marks based on horizontal and vertical projections.Input images are rotated before processing to ensure satisfactory alignment with the correct orientation.This is achieved by maximizing standard deviation of the vertical projection.The obtained results are then sent to a database for further manipulation.Experiments show that the algorithm is reliable and efficient.