Optical information reading method, optical information reading device, and storage medium

An optical information reading device comprising:

• an imager;
• an imaging controller configured to cause the imager to periodically capture an image;
• a reading part configured to analyze the image captured by the imager to read optical information contained in the image;
• an estimating part configured to estimate, based on images captured within a first time range, an amount of movement of the imager in the first time range;
• and
• a condition adjusting part configured to adjust an imaging condition of the imager based on pixel values of pixels in the image captured by the imager, such that, when it is determined that the amount of movement estimated by the estimating part satisfies a predetermined first upper limit, the imaging condition of the imager is adjusted based on pixel values of pixels within a narrower region in the image as compared with a case where it is determined that the estimated amount of movement does not satisfy the first upper limit.

A non-transitory machine-readable storage medium containing program instructions executable by a computer, and when executed, causing one computer or a plurality of computers in cooperation to execute an optical information reading method, the method comprising:

• periodically capturing an image by an imager;
• analyzing the image captured by the imager to read optical information contained in the image;
• estimating, based on images captured within a first time range, an amount of movement of the imager in the first time range;
• adjusting an imaging condition of the imager based on pixel values of pixels in the image captured by the imager, such that, when it is determined that the estimated amount of movement satisfies a predetermined first upper limit, the imaging condition of the imager is adjusted based on pixel values of pixels within a narrower region in the image as compared with a case where it is determined that the estimated amount of movement does not satisfy the first upper limit.