BR112015016525A2 - aparelho de imageamento com compesação de exposição automática adaptável à cena - Google Patents

aparelho de imageamento com compesação de exposição automática adaptável à cena

Info

Publication number
BR112015016525A2
BR112015016525A2 BR112015016525A BR112015016525A BR112015016525A2 BR 112015016525 A2 BR112015016525 A2 BR 112015016525A2 BR 112015016525 A BR112015016525 A BR 112015016525A BR 112015016525 A BR112015016525 A BR 112015016525A BR 112015016525 A2 BR112015016525 A2 BR 112015016525A2
Authority
BR
Brazil
Prior art keywords
histogram
boxes
auto exposure
scene
saturation point
Prior art date
Application number
BR112015016525A
Other languages
English (en)
Other versions
BR112015016525B8 (pt
BR112015016525B1 (pt
Inventor
Sun Guoqian
Afrooze Sina
Original Assignee
Avigilon 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 Avigilon Corp filed Critical Avigilon Corp
Publication of BR112015016525A2 publication Critical patent/BR112015016525A2/pt
Publication of BR112015016525B1 publication Critical patent/BR112015016525B1/pt
Publication of BR112015016525B8 publication Critical patent/BR112015016525B8/pt

Links

Classifications

    • 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
    • H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/40—Image enhancement or restoration by the use of histogram techniques
    • 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
    • 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
    • H04N23/71—Circuitry for evaluating the brightness variation
    • 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
    • H04N5/30—Transforming light or analogous information into electric information
    • H04N5/33—Transforming infrared radiation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10048—Infrared image
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20072—Graph-based image processing

Abstract

resumo patente de invenção: "aparelho de imageamento com compensação de exposição automática adaptável à cena". a presente invenção refere-se a um método que ajusta um alvo de exposição automática em uma operação de exposição automática em uma sequência de imagens, tal como uma sequência de imagens infravermelhas. o método compreende: obter um histograma de pelo menos uma das imagens; aplicar uma tabela de histograma ponderado ao histograma para obter caixas de histograma ponderado, sendo que pelo menos a algumas caixas no histograma que contenham pixels saturados é atribuído um valor de ponderação maior, e pelo menos a algumas caixas no histograma que contenham pixels insaturados é atribuído um valor de ponderação menor, e somar as caixas de histograma ponderado para obter um ponto de saturação e diminuir um alvo de exposição automática para uma operação de exposição automática quando o ponto de saturação excede um primeiro valor limite, e aumentar o alvo de exposição automática quando o ponto de saturação está abaixo do primeiro valor limite e a imagem é subexposta.
BR112015016525A 2013-01-15 2013-01-28 Método para ajuste de alvo de exposição automática, método para gerar máscara de pixels saturados e aparelho de imageamento BR112015016525B8 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201361752889P 2013-01-15 2013-01-15
US61/752,889 2013-01-15
PCT/CA2013/050060 WO2014110654A1 (en) 2013-01-15 2013-01-28 Imaging apparatus with scene adaptive auto exposure compensation

Publications (3)

Publication Number Publication Date
BR112015016525A2 true BR112015016525A2 (pt) 2017-07-11
BR112015016525B1 BR112015016525B1 (pt) 2021-09-14
BR112015016525B8 BR112015016525B8 (pt) 2023-02-28

Family

ID=51164846

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112015016525A BR112015016525B8 (pt) 2013-01-15 2013-01-28 Método para ajuste de alvo de exposição automática, método para gerar máscara de pixels saturados e aparelho de imageamento

Country Status (14)

Country Link
US (2) US9536292B2 (pt)
EP (1) EP2946249B1 (pt)
JP (1) JP5981053B2 (pt)
KR (1) KR101883037B1 (pt)
CN (1) CN105190424B (pt)
AU (1) AU2013374190B2 (pt)
BR (1) BR112015016525B8 (pt)
CA (1) CA2896825C (pt)
HK (1) HK1216192A1 (pt)
IL (1) IL239679A0 (pt)
MX (1) MX349155B (pt)
NZ (1) NZ709731A (pt)
SG (1) SG11201505509RA (pt)
WO (1) WO2014110654A1 (pt)

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KR20210123602A (ko) * 2020-04-03 2021-10-14 에스케이하이닉스 주식회사 이미지 센싱 장치 및 그의 동작 방법
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Also Published As

Publication number Publication date
EP2946249A4 (en) 2016-11-02
AU2013374190B2 (en) 2016-11-10
JP5981053B2 (ja) 2016-08-31
CA2896825C (en) 2019-09-10
US20160142608A1 (en) 2016-05-19
MX349155B (es) 2017-07-14
CN105190424A (zh) 2015-12-23
US9615032B2 (en) 2017-04-04
KR101883037B1 (ko) 2018-07-27
IL239679A0 (en) 2015-08-31
NZ709731A (en) 2016-12-23
HK1216192A1 (zh) 2016-10-21
BR112015016525B8 (pt) 2023-02-28
US9536292B2 (en) 2017-01-03
EP2946249B1 (en) 2018-05-23
WO2014110654A1 (en) 2014-07-24
US20140198218A1 (en) 2014-07-17
AU2013374190A1 (en) 2015-07-23
EP2946249A1 (en) 2015-11-25
KR20150139826A (ko) 2015-12-14
BR112015016525B1 (pt) 2021-09-14
CA2896825A1 (en) 2014-07-24
JP2016510532A (ja) 2016-04-07
SG11201505509RA (en) 2015-08-28
MX2015009082A (es) 2016-03-11
CN105190424B (zh) 2018-06-01

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Legal Events

Date Code Title Description
B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B06U Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 28/01/2013, OBSERVADAS AS CONDICOES LEGAIS.

B25A Requested transfer of rights approved

Owner name: MOTOROLA SOLUTIONS, INC. (US)