IN2014MU04250A - - Google Patents
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- Publication number
- IN2014MU04250A IN2014MU04250A IN4250MU2014A IN2014MU04250A IN 2014MU04250 A IN2014MU04250 A IN 2014MU04250A IN 4250MU2014 A IN4250MU2014 A IN 4250MU2014A IN 2014MU04250 A IN2014MU04250 A IN 2014MU04250A
- Authority
- IN
- India
- Prior art keywords
- flicker
- images
- normalized
- likelihood
- hypothesis
- Prior art date
Links
- 238000000034 method Methods 0.000 abstract 2
- 238000001514 detection method Methods 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0127—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level by changing the field or frame frequency of the incoming video signal, e.g. frame rate converter
- H04N7/0132—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level by changing the field or frame frequency of the incoming video signal, e.g. frame rate converter the field or frame frequency of the incoming video signal being multiplied by a positive integer, e.g. for flicker reduction
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
-
- 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
- H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Studio Devices (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Computer Hardware Design (AREA)
- Picture Signal Circuits (AREA)
Abstract
A method for flicker detection based on a plurality of images and associated circuit is provided. The method includes providing an integrated flicker signal for each image, including accumulating pixel data of a number of pixels along each row; performing a motion compensation including: comparing two integrated flicker signals of two images, and accordingly providing a flicker signal difference; performing a flicker feature extraction including: applying a frequency analysis on the flicker signal difference, and accordingly providing a normalized flicker feature value; and performing a flicker determination, including: calculating a likelihood according to the normalized flicker feature value, and, according to the likelihood, determining whether a flicker-free hypothesis should be rejected in favor of a flicker-suffered hypothesis. *****
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201461923390P | 2014-01-03 | 2014-01-03 | |
US14/583,241 US9686505B2 (en) | 2014-01-03 | 2014-12-26 | Method for flicker detection and associated circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
IN2014MU04250A true IN2014MU04250A (en) | 2015-10-16 |
Family
ID=53496172
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IN4250MU2014 IN2014MU04250A (en) | 2014-01-03 | 2014-12-31 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9686505B2 (en) |
CN (1) | CN104780358B (en) |
BR (1) | BR102015000159A2 (en) |
IN (1) | IN2014MU04250A (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10298843B2 (en) * | 2014-04-22 | 2019-05-21 | Sony Semiconductor Solutions Corporation | Image processing device, image processing method, and electronic apparatus for motion detection in image |
US10973713B2 (en) * | 2014-06-30 | 2021-04-13 | Rehabilitation Institute Of Chicago | Body signal control device and related methods |
CN107251543B (en) * | 2015-02-16 | 2018-09-07 | 富士胶片株式会社 | Imaging device, flicker detection method and recording medium |
US11212489B2 (en) * | 2015-04-09 | 2021-12-28 | Sony Corporation | Imaging device, imaging method, electronic apparatus, and onboard electronic apparatus |
JP6566737B2 (en) * | 2015-06-18 | 2019-08-28 | キヤノン株式会社 | Information processing apparatus, information processing method, and program |
US10444006B2 (en) | 2015-08-19 | 2019-10-15 | Faro Technologies, Inc. | Three-dimensional imager |
JP6646257B2 (en) * | 2016-02-08 | 2020-02-14 | 富士ゼロックス株式会社 | Terminal device, diagnostic system and program |
JP6691012B2 (en) * | 2016-07-28 | 2020-04-28 | マレリ株式会社 | Vehicle periphery monitoring device and vehicle periphery monitoring method |
GB2568924B (en) * | 2017-11-30 | 2022-07-20 | Apical Ltd | Method of flicker reduction |
TWI680675B (en) * | 2017-12-29 | 2019-12-21 | 聯發科技股份有限公司 | Image processing device and associated image processing method |
US11416759B2 (en) * | 2018-05-24 | 2022-08-16 | Samsung Electronics Co., Ltd. | Event-based sensor that filters for flicker |
US11025825B2 (en) | 2018-07-19 | 2021-06-01 | Karl Storz Imaging, Inc. | System and method to obtain a moving endoscopic image |
US11196940B2 (en) * | 2018-10-10 | 2021-12-07 | Johnson Controls Tyco IP Holdings LLP | Systems and methods of eliminating video flicker caused by LED duty cycling to maintain brightness and control power consumption |
US10798298B1 (en) * | 2019-02-05 | 2020-10-06 | Facebook Technologies, Llc | Flicker detector |
CN111131718B (en) * | 2019-07-16 | 2021-05-14 | 深圳市艾为智能有限公司 | Multi-exposure image fusion method and system with LED flicker compensation function |
US11039081B2 (en) | 2019-07-17 | 2021-06-15 | Pixart Imaging Inc. | Image sensor capable of eliminating rolling flicker and adjusting frame rate |
CN114630054A (en) * | 2020-12-14 | 2022-06-14 | 瑞昱半导体股份有限公司 | Image acquisition device with image flicker detection mechanism and image flicker detection method thereof |
CN112798861B (en) * | 2020-12-30 | 2022-08-02 | 广东电网有限责任公司广州供电局 | Voltage flicker parameter identification method and device, computer equipment and storage medium |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1156152C (en) | 1999-10-08 | 2004-06-30 | 松下电器产业株式会社 | Lighting scintillation detecting, compensating device and ac power supply frequency detecting device and method |
US7187405B2 (en) * | 2001-10-02 | 2007-03-06 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Automatic flicker frequency detection device and method |
CN100480831C (en) | 2004-05-11 | 2009-04-22 | 北京中星微电子有限公司 | Installation for determining indoor illumination environment being, as 50Hz or 60Hz |
US7538799B2 (en) | 2005-01-14 | 2009-05-26 | Freescale Semiconductor, Inc. | System and method for flicker detection in digital imaging |
US8092506B2 (en) | 2007-09-07 | 2012-01-10 | Steven Haase | Ionic foot bath array with ionic circulation |
US8441551B2 (en) * | 2008-11-14 | 2013-05-14 | Ati Technologies Ulc | Flicker detection circuit for imaging sensors that employ rolling shutters |
US20110255786A1 (en) * | 2010-04-20 | 2011-10-20 | Andrew Hunter | Method and apparatus for determining flicker in the illumination of a subject |
US8908101B2 (en) * | 2012-03-14 | 2014-12-09 | Samsung Techwin Co., Ltd. | Method and apparatus for reducing noise of video |
-
2014
- 2014-12-26 US US14/583,241 patent/US9686505B2/en active Active
- 2014-12-31 IN IN4250MU2014 patent/IN2014MU04250A/en unknown
-
2015
- 2015-01-04 CN CN201510002287.6A patent/CN104780358B/en active Active
- 2015-01-05 BR BR102015000159A patent/BR102015000159A2/en active Search and Examination
Also Published As
Publication number | Publication date |
---|---|
US20150195487A1 (en) | 2015-07-09 |
CN104780358A (en) | 2015-07-15 |
BR102015000159A2 (en) | 2016-06-28 |
CN104780358B (en) | 2018-12-14 |
US9686505B2 (en) | 2017-06-20 |
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