作者: Carl W. Gerst , Justin Testa , Sateesha Nadabar , William H. Equitz
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摘要: Systems and methods are provided for selectively controlling the illumination, particularly dark field applied to a symbol be decoded, determining suitable or optimized level of lighting decoding symbol. A method includes providing light source comprising plurality individually-controllable elements low angle illumination; activating an image sensor detecting data reflected from encoded when is illuminated by source; controller connected each elements, being programmed for: vary direction illumination processing detected image.