JPS6424564A - Method for correcting dark time output of image sensor - Google Patents
Method for correcting dark time output of image sensorInfo
- Publication number
- JPS6424564A JPS6424564A JP62180662A JP18066287A JPS6424564A JP S6424564 A JPS6424564 A JP S6424564A JP 62180662 A JP62180662 A JP 62180662A JP 18066287 A JP18066287 A JP 18066287A JP S6424564 A JPS6424564 A JP S6424564A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- image
- time output
- dark time
- inputted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Facsimile Scanning Arrangements (AREA)
Abstract
PURPOSE:To obtain a high picture quality image signal not to cause an image non-uniformity by executing the dark time output correction of an image signal by a dark time output signal based on the measurement of the ambient temperature of an image sensor. CONSTITUTION:A sensor signal TS of a temperature sensor 13 is inputted to an A/D converter 3, a digital-converted sensor signal is inputted to a storing means (LUT) 4. Since the dark time output value of an image sensor 12 based on the temperature characteristic is stored beforehand in an LUT 4 digitally, a dark time output signal signal LD collated with the inputted sensor signal TD is read, inputted to a D/A converter 5 and an analog-converted dark time output signal LA is inputted to one side of inputs of a differential amplifier 6. Since an image signal GS is inputted from the image sensor 12 to other side of the inputs of the differential amplifier 6, an image signal AS to subtract the dark time output signal LA from the image signal GS is outputted. Since the signal of a dummy picture element in the image sensor is not completely used, the high quality image signal without the image non-uniformity is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62180662A JPS6424564A (en) | 1987-07-20 | 1987-07-20 | Method for correcting dark time output of image sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62180662A JPS6424564A (en) | 1987-07-20 | 1987-07-20 | Method for correcting dark time output of image sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6424564A true JPS6424564A (en) | 1989-01-26 |
Family
ID=16087122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62180662A Pending JPS6424564A (en) | 1987-07-20 | 1987-07-20 | Method for correcting dark time output of image sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6424564A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS594902A (en) * | 1982-06-30 | 1984-01-11 | Sumitomo Metal Ind Ltd | Production of metallic material having circular section |
| DE4309724A1 (en) * | 1993-03-25 | 1994-09-29 | Kodak Ag | Method for the temperature-dependent dark current compensation in CCD image sensors |
| WO2018008051A1 (en) * | 2016-07-04 | 2018-01-11 | 株式会社日立ハイテクノロジーズ | Inspection device and inspection method |
-
1987
- 1987-07-20 JP JP62180662A patent/JPS6424564A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS594902A (en) * | 1982-06-30 | 1984-01-11 | Sumitomo Metal Ind Ltd | Production of metallic material having circular section |
| DE4309724A1 (en) * | 1993-03-25 | 1994-09-29 | Kodak Ag | Method for the temperature-dependent dark current compensation in CCD image sensors |
| WO2018008051A1 (en) * | 2016-07-04 | 2018-01-11 | 株式会社日立ハイテクノロジーズ | Inspection device and inspection method |
| US10458924B2 (en) | 2016-07-04 | 2019-10-29 | Hitachi High-Technologies Corporation | Inspection apparatus and inspection method |
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