Dynamic exposure control in color scanners
نویسنده
چکیده
We present a technique in which statistical methods are used to estimate the tone level of the paper. This estimate is used to set the parameters for a tone reproduction curve. The technique is incremental, the statistical data is gathered during the scan. While the scan progresses, the estimate is refined based on the increased amount of data avail able from the accumulated histogram. This has also the advantage that artifacts due to lamp warming during slow scans (typical for color facsimile) are automatically compensated. Dynamic exposure control in color scanners
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تاریخ انتشار 1997