Method for interpreting a plurality of response marks on a scann

Details Method for interpreting a plurality of response marks on a scann Method for interpreting a plurality of response marks on a scann

1995-02-24

1998-01-27

Apley, Richard J.

Education and demonstration

Question or problem eliciting response

Grading of response form

434358, G06K 710

Patent

active

057116733

ABSTRACT:
To determine a read level threshold for discriminating those response bubbles on a scannable answer sheet intended to be marked from those response bubbles not intended to be marked, an adjustable read level threshold is dynamically determined based on the read levels of a designated pool of response bubbles. Response bubble marks having a darkness read level at or above a threshold level are interpreted to be intended response marks, and different response bubbles in which response marks may be found are assigned different predetermined scoring values.

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patent: 5073700 (1991-12-01), D'Onofrio

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