Methods and apparatus for improving direct part mark scanner performance
OwnerEugene Joseph, Duanfeng He +1inventors
InventorsEugene Joseph, Duanfeng He, Bradley Carlson
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Abstract
Methods and apparatus for improving direct part mark dataform decoding using a scanner comprising a processing unit, an optical module and an imaging sensor with an extended dynamic range. The scanner captures data to obtain an extended dynamic range image for analysis. In one embodiment, the sensor is sensitive to more than eight bits per pixel and in other embodiments multiple exposures are taken. Further in alternate embodiments, the scanner comprises a pass-band filter that passes the light emitted by an illumination module.
Claims21
A method of scanning comprising:
- illuminating an object using an illumination medium coupled to a scanner;
- capturing multiple exposures of said object, wherein each exposure comprises a different dynamic range;
- combining at least two of said captured exposures to obtain an image with an extended dynamic range;
- and
- analyzing said combined image.
A direct part mark scanner comprising:
- a processing unit;
- an optical module;
- and
- an imaging sensor with an extended dynamic range, wherein said direct part mark scanner captures at least one image to obtain an extended dynamic range image.
A direct part mark scanner comprising:
- a processing unit;
- an optical module;
- an imaging sensor;
- an illumination medium, wherein said illumination medium emits near infrared illumination;
- and
- a band-pass filter wherein said band-pass filter passes said near infrared illumination.
Dependencies are inferred from the claim text.