WO2001043068A3 - Electronic image processing technique for achieving enhanced image detail - Google Patents

Electronic image processing technique for achieving enhanced image detail Download PDF

Info

Publication number
WO2001043068A3
WO2001043068A3 PCT/US2000/042466 US0042466W WO0143068A3 WO 2001043068 A3 WO2001043068 A3 WO 2001043068A3 US 0042466 W US0042466 W US 0042466W WO 0143068 A3 WO0143068 A3 WO 0143068A3
Authority
WO
WIPO (PCT)
Prior art keywords
image processing
image
electronic image
processing subsystem
agc
Prior art date
Application number
PCT/US2000/042466
Other languages
French (fr)
Other versions
WO2001043068A2 (en
Inventor
Tuan Tran
Original Assignee
Ball Aerospace & Tech Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ball Aerospace & Tech Corp filed Critical Ball Aerospace & Tech Corp
Priority to AU45121/01A priority Critical patent/AU4512101A/en
Publication of WO2001043068A2 publication Critical patent/WO2001043068A2/en
Publication of WO2001043068A3 publication Critical patent/WO2001043068A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response
    • H04N5/205—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic
    • H04N5/208—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/76—Circuitry for compensating brightness variation in the scene by influencing the image signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/52—Automatic gain control

Abstract

An imaging system for achieving enhanced image detail, as in fig. 1, includes a sensor subsystem (12), an electronic image processing subsystem (14), and an automatic gain control (AGC) unit (16). The sensor unit (12) is operative for sensing an image received from an exterior environment and for converting the image to an electrical representation having a peak value that is related to the dynamic range of the image. The electrical representation is then processed in the electronic image processing subsystem (14) using a unique multiple order, non-linear transfer function that processes the signal in a manner that is dependent upon the dynamic range of the input image. The output signal of the electronic image processing subsystem is then applied to the AGC unit (16) which performs a conventional AGC function on the signal. Thus, the imaging system automatically adjusts to changing scene content in the input image in a dynamic manner.
PCT/US2000/042466 1999-12-01 2000-11-30 Electronic image processing technique for achieving enhanced image detail WO2001043068A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU45121/01A AU4512101A (en) 1999-12-01 2000-11-30 Electronic image processing technique for achieving enhanced image detail

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/452,943 US6567124B1 (en) 1999-12-01 1999-12-01 Electronic image processing technique for achieving enhanced image detail
US09/452,943 1999-12-01

Publications (2)

Publication Number Publication Date
WO2001043068A2 WO2001043068A2 (en) 2001-06-14
WO2001043068A3 true WO2001043068A3 (en) 2002-03-21

Family

ID=23798599

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/042466 WO2001043068A2 (en) 1999-12-01 2000-11-30 Electronic image processing technique for achieving enhanced image detail

Country Status (3)

Country Link
US (1) US6567124B1 (en)
AU (1) AU4512101A (en)
WO (1) WO2001043068A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1152604A1 (en) * 2000-04-24 2001-11-07 Pulnix America, Inc. Video glare reduction
DE10325406B4 (en) * 2003-06-05 2005-04-28 Eads Deutschland Gmbh Damage determination on structures to be tested by means of ultrasound
WO2007036851A2 (en) * 2005-09-30 2007-04-05 Nxp B.V. Dynamic softclipping of video levels
JP2007256251A (en) * 2006-02-24 2007-10-04 Hitachi High-Technologies Corp Data collection processor
US8279308B1 (en) * 2009-07-30 2012-10-02 Adobe Systems Incorporated Optimized log encoding of image data
US9024951B2 (en) * 2011-02-16 2015-05-05 Apple Inc. Devices and methods for obtaining high-local-contrast image data
US9973723B2 (en) * 2014-02-24 2018-05-15 Apple Inc. User interface and graphics composition with high dynamic range video

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3599104A (en) * 1968-12-30 1971-08-10 Gen Electric Logarithmic amplifier of extended dynamic range
US4560864A (en) * 1978-07-28 1985-12-24 Canon Kabushiki Kaisha Focus detecting device
US4628362A (en) * 1985-05-02 1986-12-09 American Dynamics Corporation Combined video AGC and digitizing circuit
US4926247A (en) * 1986-10-15 1990-05-15 Olympus Optical Co., Ltd. Color imaging apparatus including a means for electronically non-linearly expanding and compressing dynamic range of an image signal
US5867216A (en) * 1992-02-21 1999-02-02 Canon Kabushiki Kaisha Image sensing apparatus
US5900918A (en) * 1997-07-30 1999-05-04 Hughes-Jvc Technology Corporation Adjustable video gamma circuit

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4507615A (en) * 1982-12-16 1985-03-26 Tektronix, Inc. Non-linear amplifier systems
GB8521019D0 (en) 1985-08-22 1986-10-01 Rank Pullin Controls Ltd Imaging apparatus
US4680489A (en) * 1986-09-25 1987-07-14 Rockwell International Corporation Controllable piecewise linear gain circuit
FR2611337B1 (en) 1987-02-20 1989-05-26 Thomson Semiconducteurs AUTOMATIC VIDEO GAIN CONTROL DEVICE
US5241575A (en) * 1989-12-21 1993-08-31 Minolta Camera Kabushiki Kaisha Solid-state image sensing device providing a logarithmically proportional output signal
US5223935A (en) 1990-04-02 1993-06-29 Casio Computer Co., Ltd. Electronic camera with automatic exposure control
US5387930A (en) * 1990-05-25 1995-02-07 European Visions Systems Centre Limited Electronic image acquistion system with image optimization by intensity entropy analysis and feedback control
JP3074967B2 (en) 1992-10-27 2000-08-07 松下電器産業株式会社 High dynamic range imaging / synthesis method and high dynamic range imaging apparatus
US5691821A (en) * 1992-12-04 1997-11-25 Canon Kabushiki Kaisha A/D converting apparatus and image sensing apparatus
EP0784399B1 (en) * 1994-09-30 2006-04-12 Matsushita Electric Industrial Co., Ltd. Image pickup device
JPH0965217A (en) * 1995-08-22 1997-03-07 Nec Corp Solid-state image pickup device and its drive method
JP3629764B2 (en) * 1995-08-25 2005-03-16 ソニー株式会社 Video signal recording apparatus, recording method, editing method and system thereof
JP3316351B2 (en) * 1995-09-27 2002-08-19 シャープ株式会社 AGC device
US5614948A (en) 1996-04-26 1997-03-25 Intel Corporation Camera having an adaptive gain control
US5892541A (en) * 1996-09-10 1999-04-06 Foveonics, Inc. Imaging system and method for increasing the dynamic range of an array of active pixel sensor cells
US6246436B1 (en) * 1997-11-03 2001-06-12 Agilent Technologies, Inc Adjustable gain active pixel sensor
US6040570A (en) * 1998-05-29 2000-03-21 Sarnoff Corporation Extended dynamic range image sensor system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3599104A (en) * 1968-12-30 1971-08-10 Gen Electric Logarithmic amplifier of extended dynamic range
US4560864A (en) * 1978-07-28 1985-12-24 Canon Kabushiki Kaisha Focus detecting device
US4628362A (en) * 1985-05-02 1986-12-09 American Dynamics Corporation Combined video AGC and digitizing circuit
US4926247A (en) * 1986-10-15 1990-05-15 Olympus Optical Co., Ltd. Color imaging apparatus including a means for electronically non-linearly expanding and compressing dynamic range of an image signal
US5867216A (en) * 1992-02-21 1999-02-02 Canon Kabushiki Kaisha Image sensing apparatus
US5900918A (en) * 1997-07-30 1999-05-04 Hughes-Jvc Technology Corporation Adjustable video gamma circuit

Also Published As

Publication number Publication date
US6567124B1 (en) 2003-05-20
WO2001043068A2 (en) 2001-06-14
AU4512101A (en) 2001-06-18

Similar Documents

Publication Publication Date Title
CA2188446A1 (en) Method and apparatus for automatic gain control in a digital receiver
EP1369788A3 (en) RS232C interface system
EP0823829A3 (en) Digital hearing aid system
EP0920196A3 (en) Method and imaging apparatus for generating a dynamic range expanded video signal
CA2344871A1 (en) Method for in-situ measuring and in-situ correcting or adjusting a signal process in a hearing aid with a reference signal processor
EP0858214A3 (en) Video input apparatus and image pickup system including the apparatus
KR970019506A (en) AGC device simultaneously satisfying sufficient impedance matching characteristics and linear AGC characteristics
EP1349383A4 (en) Image sensor output correcting device
CA2032150A1 (en) Digital signal processor based agc
WO2001043068A3 (en) Electronic image processing technique for achieving enhanced image detail
JPH0622172A (en) Image pickup device
EP1335611A3 (en) Camera with image recording mode switching function
EP0804021A3 (en) Image signal processing
EP0838914A3 (en) Circuit arrangement for amplifying an electrical signal converted from an optical signal
EP0911979A3 (en) Audio signal processor
EP0878961A3 (en) Camera apparatus and image processing system with variable data rate
KR840004651A (en) Automatic Color Control System for Digital Television Receiver
EP0841811A3 (en) Video signal processing device and method
EP0866602A3 (en) Image processing apparatus
US20070013565A1 (en) Readout circuit for an image sensor and analog-to-digital converting method thereof
EP1416711A4 (en) Signal processing circuit and solid-state image pickup device
CA2053124A1 (en) Speech detection circuit
WO1998052352A1 (en) Apparatus and method for correcting image pickup signal, and video camera
WO2002021440A3 (en) Image capture device
WO2000046984A8 (en) Modular structure of a smart camera for image signal processing

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
AK Designated states

Kind code of ref document: A3

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP