METHOD FOR DETECTING OPTICAL INFORMATION, OPTICAL INFORMATION DETECTOR AND METHOD FOR PROCESSING OPTICAL INFORMATION

摘要

An optical information detecting method, an optical information detector, and an optical information processing method are provided to reliably detect information of a data page without a frame mark. A photo detecting unit(161) detects a source image including an image of optical information. A reference pixel detecting unit(162) operates light intensity distribution information of columns and rows of the detected source image, and detects a reference pixel of the detected image of the optical information. An align pattern processing unit(163) detects and reads at least one align pattern located at certain distance from the detected reference pixel by using stored align pattern insertion information, and discriminates whether to correct a sampling position for sampling data of the detected image of the optical information. When it is necessary to correct the sampling position as a result of the discrimination, a sampling position correcting unit(160) corrects the sampling position by using the read information of the align pattern and the align pattern insertion information. A data sampling unit(167) performs sampling.