发明名称 |
Digitizer with improved dynamic range and photometric resolution |
摘要 |
A digitizer having a dual exposure technique is combined with an associated LUT for each exposure. Each LUT may have a transfer function including a logarithmic operator resulting in a digitized image with improved photometric resolution and increased dynamic range. A digitizer utilizing multiple exposures at approximately equal exposure time intervals provides a noise reduction for lower optical density portions of the data medium further contributing to increased dynamic range. Associated methods are also provided.
|
申请公布号 |
US6914701(B2) |
申请公布日期 |
2005.07.05 |
申请号 |
US20020313764 |
申请日期 |
2002.12.06 |
申请人 |
HOWTEK DEVICES CORPORATION |
发明人 |
LEHMAN RICHARD |
分类号 |
H04N1/387;(IPC1-7):H04N1/40;H03M1/12;H04N1/04;H04N1/38 |
主分类号 |
H04N1/387 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|