Method and system for estimating sensor dark current drift and sensor/illumination non-uniformities
One aspect of the present invention is a system for estimating sensor and illumination non-uniformities. The system comprises a first light source, and a first sensor operable to capture light reflected from a first side of film illuminated by the light source while the film has a developer chemical...
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| creator | YOUNG, JR. ROBERT S HANSEN CHRISTOPHER P CANNATA PHILIP E BALL RICHARD D BISHOP MARK S HINKLE, II CLYDE W DIGBY MARC C |
| description | One aspect of the present invention is a system for estimating sensor and illumination non-uniformities. The system comprises a first light source, and a first sensor operable to capture light reflected from a first side of film illuminated by the light source while the film has a developer chemical applied thereto and processing circuitry coupled to the first sensor. The processing circuitry is operable to capture a first plurality of readings from the sensor responsive to light reflected from an unexposed region of film to determine a first set of non-uniformity data and adjust image data obtained from the film in response to the first set of non-uniformity data. In a further embodiment, the processing circuitry is further operable to dim the first light source for at least a portion of the time that the sensor is being used to sense the unexposed region of the film. The processing circuitry may also capture a second plurality of readings from the sensor while the first light source is dimmed to determine a second set of non-uniformity data and adjust image data obtained from the film in response to the second set of non-uniformity data. |
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ROBERT S ; HANSEN CHRISTOPHER P ; CANNATA PHILIP E ; BALL RICHARD D ; BISHOP MARK S ; HINKLE, II CLYDE W ; DIGBY MARC C</creatorcontrib><description>One aspect of the present invention is a system for estimating sensor and illumination non-uniformities. The system comprises a first light source, and a first sensor operable to capture light reflected from a first side of film illuminated by the light source while the film has a developer chemical applied thereto and processing circuitry coupled to the first sensor. The processing circuitry is operable to capture a first plurality of readings from the sensor responsive to light reflected from an unexposed region of film to determine a first set of non-uniformity data and adjust image data obtained from the film in response to the first set of non-uniformity data. In a further embodiment, the processing circuitry is further operable to dim the first light source for at least a portion of the time that the sensor is being used to sense the unexposed region of the film. The processing circuitry may also capture a second plurality of readings from the sensor while the first light source is dimmed to determine a second set of non-uniformity data and adjust image data obtained from the film in response to the second set of non-uniformity data.</description><edition>7</edition><language>eng</language><subject>ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; PICTORIAL COMMUNICATION, e.g. TELEVISION</subject><creationdate>2004</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20040316&DB=EPODOC&CC=US&NR=6707557B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20040316&DB=EPODOC&CC=US&NR=6707557B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>YOUNG, JR. ROBERT S</creatorcontrib><creatorcontrib>HANSEN CHRISTOPHER P</creatorcontrib><creatorcontrib>CANNATA PHILIP E</creatorcontrib><creatorcontrib>BALL RICHARD D</creatorcontrib><creatorcontrib>BISHOP MARK S</creatorcontrib><creatorcontrib>HINKLE, II CLYDE W</creatorcontrib><creatorcontrib>DIGBY MARC C</creatorcontrib><title>Method and system for estimating sensor dark current drift and sensor/illumination non-uniformities</title><description>One aspect of the present invention is a system for estimating sensor and illumination non-uniformities. The system comprises a first light source, and a first sensor operable to capture light reflected from a first side of film illuminated by the light source while the film has a developer chemical applied thereto and processing circuitry coupled to the first sensor. The processing circuitry is operable to capture a first plurality of readings from the sensor responsive to light reflected from an unexposed region of film to determine a first set of non-uniformity data and adjust image data obtained from the film in response to the first set of non-uniformity data. In a further embodiment, the processing circuitry is further operable to dim the first light source for at least a portion of the time that the sensor is being used to sense the unexposed region of the film. The processing circuitry may also capture a second plurality of readings from the sensor while the first light source is dimmed to determine a second set of non-uniformity data and adjust image data obtained from the film in response to the second set of non-uniformity data.</description><subject>ELECTRIC COMMUNICATION TECHNIQUE</subject><subject>ELECTRICITY</subject><subject>PICTORIAL COMMUNICATION, e.g. TELEVISION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2004</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNjDEKAjEQRdNYiHqHucCiKOv2imJjpdZLSCY6mEyWzKTw9i7qAaw-_P_enxp3Rn1kD5Y9yEsUE4RcAEUpWSW-gyDL2HhbnuBqKcgKvlDQr_NZlxRjTcSjkRk4c1OZxp9ESihzMwk2Ci5-OTNwPFz3pwaH3KMM1iGj9rfLtlt1bdvt1ps_kDeI2z86</recordid><startdate>20040316</startdate><enddate>20040316</enddate><creator>YOUNG, JR. 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ROBERT S</creatorcontrib><creatorcontrib>HANSEN CHRISTOPHER P</creatorcontrib><creatorcontrib>CANNATA PHILIP E</creatorcontrib><creatorcontrib>BALL RICHARD D</creatorcontrib><creatorcontrib>BISHOP MARK S</creatorcontrib><creatorcontrib>HINKLE, II CLYDE W</creatorcontrib><creatorcontrib>DIGBY MARC C</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>YOUNG, JR. ROBERT S</au><au>HANSEN CHRISTOPHER P</au><au>CANNATA PHILIP E</au><au>BALL RICHARD D</au><au>BISHOP MARK S</au><au>HINKLE, II CLYDE W</au><au>DIGBY MARC C</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Method and system for estimating sensor dark current drift and sensor/illumination non-uniformities</title><date>2004-03-16</date><risdate>2004</risdate><abstract>One aspect of the present invention is a system for estimating sensor and illumination non-uniformities. The system comprises a first light source, and a first sensor operable to capture light reflected from a first side of film illuminated by the light source while the film has a developer chemical applied thereto and processing circuitry coupled to the first sensor. The processing circuitry is operable to capture a first plurality of readings from the sensor responsive to light reflected from an unexposed region of film to determine a first set of non-uniformity data and adjust image data obtained from the film in response to the first set of non-uniformity data. In a further embodiment, the processing circuitry is further operable to dim the first light source for at least a portion of the time that the sensor is being used to sense the unexposed region of the film. The processing circuitry may also capture a second plurality of readings from the sensor while the first light source is dimmed to determine a second set of non-uniformity data and adjust image data obtained from the film in response to the second set of non-uniformity data.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PICTORIAL COMMUNICATION, e.g. TELEVISION |
| title | Method and system for estimating sensor dark current drift and sensor/illumination non-uniformities |
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