The term "information" has been used with many various meanings throughout the previous decade, one of which is "information as a thing," which refers to bits, bytes, papers, books, and other physical media. In this perspective, information is a synonym for a broad view of a document, and a document can be regarded as a representation of human thinking or original data is written, drawn, sketched, presented, printed, scanned, or copied form. Information stored on the documents is of high value, but the task of retrieving the data from them becomes tedious. OCR is used to scan and retrieve data these days but the OCR accuracy is likely to be poorer if the image is of poor quality. Low OCR accuracy necessitates the use of additional algorithms to improve the image or post-processing algorithms to correct the problem.