作者: Robert D. Kirkpatrick
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摘要: A target locator having a group of uniquely configured, high contrast elements is displayed adjacent one or more bar codes for increasing the probability acquiring code interest and extending range at which can be acquired read. The are arranged in pattern unlikely to occur nature, width spacing substantially greater than comparable within interest. comparison grey scale pixel values used validate whether candidate actually corresponds with reference data stored memory. When card second interest, two scanned same field view.