JP6729708B2 - 信号調整プログラム、信号調整装置、及び信号調整方法 - Google Patents
信号調整プログラム、信号調整装置、及び信号調整方法 Download PDFInfo
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- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
-
- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/46—Embedding additional information in the video signal during the compression process
- H04N19/467—Embedding additional information in the video signal during the compression process characterised by the embedded information being invisible, e.g. watermarking
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- H04N1/387—Composing, repositioning or otherwise geometrically modifying originals
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
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- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
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- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
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- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
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- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440245—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display the reformatting operation being performed only on part of the stream, e.g. a region of the image or a time segment
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- H04N5/77—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera
- H04N5/772—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera the recording apparatus and the television camera being placed in the same enclosure
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- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
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- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
- H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
- H04N2005/91335—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a watermark
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- 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
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Optical Communication System (AREA)
- Facsimile Transmission Control (AREA)
- Image Processing (AREA)
Description
(1)コンピュータは、時系列に変化する信号が埋め込まれた光を反射する物体を撮影した第1映像を解析して、第1映像に含まれる画像内で信号が埋め込まれた領域を特定する。
(2)コンピュータは、特定した領域に埋め込まれた信号を調整する。
(3)コンピュータは、調整した信号を含む第2映像を出力する。
可視光通信技術の応用例として、イベント会場又は撮影スタジオ等の撮影場所の照明光に情報を埋め込んで物体に照射し、その物体を含む光景を撮影した映像を、テレビジョン(TV)放送又はインターネット配信等を介してユーザに提供することが想定される。ユーザは、提供された映像を表示するTV受像機又はパーソナルコンピュータ(PC)の画面をカメラで撮影することで、映像に埋め込まれた情報に基づいて、撮影場所の物体、放送番組等に関連する付加情報を取得することが可能になる。
Y=X×M (1)
Z=X×N (2)
Q=A1/A2 (3)
(1)MPEG−2及び10Mbps
(2)H.264及び10Mbps
(3)H.264及び20Mbps
Claims (6)
- コンピュータのための信号調整プログラムであって、
前記信号調整プログラムは、
時系列に変化する信号が埋め込まれた光を反射する物体を撮影した第1映像を解析して、前記第1映像に含まれる画像内で前記信号が埋め込まれた領域を特定し、
前記領域に埋め込まれた前記信号を調整し、
調整した信号を含む第2映像を出力する、
処理を前記コンピュータに実行させ、
前記コンピュータは、前記第2映像を圧縮する圧縮処理の圧縮方式又は圧縮率のうち少なくとも一方に応じて、前記領域に埋め込まれた前記信号の強度を増減させることで、前記領域に埋め込まれた前記信号を調整することを特徴とする信号調整プログラム。 - 前記コンピュータは、複数の圧縮方式それぞれに対応する減衰率の逆数を示す減衰率情報を参照して、前記圧縮処理の前記圧縮方式に対応する減衰率の逆数を求め、前記圧縮処理の前記圧縮方式に対応する前記減衰率の逆数から振幅の閾値を求め、前記領域に埋め込まれた前記信号の振幅が前記閾値よりも小さい場合、前記信号の振幅が前記閾値以上になるように、前記信号の振幅を増加させることを特徴とする請求項1記載の信号調整プログラム。
- 前記コンピュータは、複数の圧縮率それぞれに対応する減衰率の逆数を示す減衰率情報を参照して、前記圧縮処理の前記圧縮率に対応する減衰率の逆数を求め、前記圧縮処理の前記圧縮率に対応する前記減衰率の逆数から振幅の閾値を求め、前記領域に埋め込まれた前記信号の振幅が前記閾値よりも小さい場合、前記信号の振幅が前記閾値以上になるように、前記信号の振幅を増加させることを特徴とする請求項1又は2記載の信号調整プログラム。
- 前記コンピュータは、前記圧縮処理によって前記第1映像を圧縮し、圧縮前の前記第1映像に含まれる前記信号の振幅と圧縮後の前記第1映像に含まれる前記信号の振幅とに基づいて減衰率の逆数を求め、前記減衰率の逆数から振幅の閾値を求め、前記領域に埋め込まれた前記信号の振幅が前記閾値よりも小さい場合、前記信号の振幅が前記閾値以上になるように、前記信号の振幅を増加させることを特徴とする請求項1記載の信号調整プログラム。
- 時系列に変化する信号が埋め込まれた光を反射する物体を撮影した第1映像を記憶する記憶部と、
前記第1映像を解析して、前記第1映像に含まれる画像内で前記信号が埋め込まれた領域を特定する領域特定部と、
前記領域に埋め込まれた前記信号を調整する調整部と、
調整した信号を含む第2映像を出力する出力部と、
を備え、
前記調整部は、前記第2映像を圧縮する圧縮処理の圧縮方式又は圧縮率のうち少なくとも一方に応じて、前記領域に埋め込まれた前記信号の強度を増減させることで、前記領域に埋め込まれた前記信号を調整することを特徴とする信号調整装置。 - コンピュータが、
時系列に変化する信号が埋め込まれた光を反射する物体を撮影した第1映像を解析して、前記第1映像に含まれる画像内で前記信号が埋め込まれた領域を特定し、
前記領域に埋め込まれた前記信号を調整し、
調整した信号を含む第2映像を出力し、
前記コンピュータは、前記第2映像を圧縮する圧縮処理の圧縮方式又は圧縮率のうち少なくとも一方に応じて、前記領域に埋め込まれた前記信号の強度を増減させることで、前記領域に埋め込まれた前記信号を調整することを特徴とする信号調整方法。
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PCT/JP2016/080287 WO2018070001A1 (ja) | 2016-10-12 | 2016-10-12 | 信号調整プログラム、信号調整装置、及び信号調整方法 |
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JPWO2018070001A1 JPWO2018070001A1 (ja) | 2019-06-24 |
JP6729708B2 true JP6729708B2 (ja) | 2020-07-22 |
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US (1) | US10651935B2 (ja) |
EP (1) | EP3528486B1 (ja) |
JP (1) | JP6729708B2 (ja) |
CN (1) | CN109792472B (ja) |
WO (1) | WO2018070001A1 (ja) |
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CN114422714B (zh) * | 2020-10-28 | 2024-07-02 | 北京小米移动软件有限公司 | 闪频光源与无闪频光源之间的切换方法及切换装置 |
USD984446S1 (en) * | 2021-09-27 | 2023-04-25 | HUM Systems GmbH | Communication equipment |
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US7373513B2 (en) * | 1998-09-25 | 2008-05-13 | Digimarc Corporation | Transmarking of multimedia signals |
JP2002344720A (ja) | 2001-05-17 | 2002-11-29 | Sony Corp | 電子透かし埋め込み処理装置、および電子透かし埋め込み処理方法、並びにプログラム |
JP4224690B2 (ja) | 2002-12-27 | 2009-02-18 | ソニー株式会社 | 記録方法、記録装置、再生方法、再生装置および撮像装置 |
JP2005039603A (ja) | 2003-07-16 | 2005-02-10 | Kyodo Printing Co Ltd | 電子透かし検出システム及び電子透かし検出方法並びに情報提供システム及び情報提供方法 |
US20060045308A1 (en) * | 2004-09-02 | 2006-03-02 | Microsoft Corporation | Camera and method for watermarking film content |
US7876978B2 (en) * | 2005-10-13 | 2011-01-25 | Penthera Technologies, Inc. | Regions of interest in video frames |
JP2008028563A (ja) * | 2006-07-19 | 2008-02-07 | Yokohama Tlo Co Ltd | 被写体照明方法、透かし情報埋め込み方法及び撮像方法 |
JP5031427B2 (ja) * | 2007-03-30 | 2012-09-19 | 三星電子株式会社 | 可視光送信装置、可視光受信装置、可視光通信システム、及び可視光通信方法 |
JP5021061B2 (ja) * | 2009-12-08 | 2012-09-05 | 株式会社 資生堂 | 非可視化情報埋込装置、非可視化情報認識装置、非可視化情報埋込方法、非可視化情報認識方法、非可視化情報埋込プログラム、及び非可視化情報認識プログラム |
US8941686B2 (en) * | 2010-06-08 | 2015-01-27 | Panasonic Intellectual Property Corporation Of America | Information display apparatus, display control integrated circuit, and display control method for superimposing, for display, information onto images captured in a time sequence |
JP5729464B2 (ja) * | 2011-03-22 | 2015-06-03 | 富士通株式会社 | 位置情報付加装置、位置情報付加方法及び位置情報付加用コンピュータプログラムならびに位置検出装置 |
US9608725B2 (en) * | 2012-12-27 | 2017-03-28 | Panasonic Intellectual Property Corporation Of America | Information processing program, reception program, and information processing apparatus |
EP3143759A1 (en) * | 2014-05-12 | 2017-03-22 | Philips Lighting Holding B.V. | Verification of images captured using a timestamp decoded from illumination from a modulated light source |
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JP6405820B2 (ja) * | 2014-09-17 | 2018-10-17 | 富士通株式会社 | 信号伝送装置、信号伝送方法および信号伝送プログラム |
WO2016060518A1 (en) * | 2014-10-17 | 2016-04-21 | Samsung Electronics Co., Ltd. | Apparatus and method for transmitting and receiving visible light data |
JP6540132B2 (ja) * | 2015-03-20 | 2019-07-10 | カシオ計算機株式会社 | 復号装置、復号方法、及び、プログラム |
JP2018536305A (ja) * | 2015-09-07 | 2018-12-06 | フィリップス ライティング ホールディング ビー ヴィ | 光へのデータの埋め込み |
US10218440B2 (en) * | 2016-01-08 | 2019-02-26 | Foundation For Research And Business, Seoul National University Of Science And Technology | Method for visible light communication using display colors and pattern types of display |
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2016
- 2016-10-12 JP JP2018544628A patent/JP6729708B2/ja active Active
- 2016-10-12 WO PCT/JP2016/080287 patent/WO2018070001A1/ja unknown
- 2016-10-12 EP EP16918783.8A patent/EP3528486B1/en active Active
- 2016-10-12 CN CN201680089949.0A patent/CN109792472B/zh active Active
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2019
- 2019-04-02 US US16/373,579 patent/US10651935B2/en not_active Expired - Fee Related
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US10651935B2 (en) | 2020-05-12 |
WO2018070001A1 (ja) | 2018-04-19 |
CN109792472A (zh) | 2019-05-21 |
EP3528486A4 (en) | 2019-10-09 |
EP3528486B1 (en) | 2023-01-11 |
EP3528486A1 (en) | 2019-08-21 |
JPWO2018070001A1 (ja) | 2019-06-24 |
US20190229804A1 (en) | 2019-07-25 |
CN109792472B (zh) | 2020-11-03 |
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