发明名称 |
IMAGE PICKING-UP DEVICE, IMAGE PICKING-UP METHOD AND IMAGE PICKING-UP PROGRAM |
摘要 |
Imaging signal obtained through exposure for divided exposure times is A/D converted to digital imaging signal. Dark current component is subtracted from the digital imaging signal. The result of subtraction is accumulated and stored in a first memory. Next, exposure for divided exposure times is performed with the imaging device shielded from light. The obtained imaging signal is A/D converted to digital imaging signal. Dark current component is subtracted from the digital imaging signal. The result of subtraction is accumulated and stored sequentially in a second memory. The digital imaging signal stored in the second memory is subtracted from the digital imaging signal stored in the first memory. Then the result of subtraction is output. The word length allocated to one pixel in the first and second memories is longer than the word length of one A/D converted pixel. |
申请公布号 |
EP2157784(A1) |
申请公布日期 |
2010.02.24 |
申请号 |
EP20080765494 |
申请日期 |
2008.06.05 |
申请人 |
SONY CORPORATION |
发明人 |
KITA, MITSUAKI;SATO, NOBUYUKI;WAKATSUKI, MASASHI;ISHIBASHI, SHINYA;MINAKUTI, JUN;KOYAMA, TAKAHIRO |
分类号 |
H04N5/243;G03B7/093;H04N5/355;H04N5/361;H04N5/367;H04N101/00 |
主分类号 |
H04N5/243 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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