Optical Mark Reader (OMR) are special scanners used for recognizing a pre-specified type of mark made by pencil or pen. For example, in the objective test paper of DOEACC,Govt.Job papers, you mark your answers on a special sheets by darkening a small square,circle etc. using a pen or pencil. These answer sheets are fed into the computer using the optical mark reader. The computer can then evaluate the answer sheets. The use of OMR is not limited to the grading of objective type test. In fact, any input data that is in the nature of a choice or selection can be recorded for OMR input.
OMR focuses light on the page being examined and the light pattern reflected from the dark marks is then detected
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