JP7447077B2 - 映像ストリームにおける動的画像コンテンツ置換のための方法およびシステム - Google Patents
映像ストリームにおける動的画像コンテンツ置換のための方法およびシステム Download PDFInfo
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- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
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- Databases & Information Systems (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
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Description
imW=imread(“FK1)
imB=imread(“FK2)
imD=imsubtract(imW,imB)
imgrey=rgb2gray(imD.*3)
imZ=imsubtract(imB,imW)
imZgray=rgb2gray(imZ.*3)
imAD=imabsdiff(imW,imB)
imADgray=rgb2gray(imAD.*3)
imedge=edge(imADgray.*3,‘fftderiv’,0.3,6.5)
immaske=imfill(imedge)
imE=immultiply(imgrey,immaske)
imF=immultiply(imZgray,immaske)
imEedge=edge(imE,‘fftderiv’,0.3,5)
imFedge=edge(imF,‘fftderiv’,0.3,5)
imH=immultiply(imEedge,imFedge)
iml=imadd(imedge,imH)
imshow(iml)
Claims (14)
- 映像ストリームにおける動的画像コンテンツ置換のための方法であって、
少なくとも二つの異なるキー画像(K1,K2)のシーケンスを包含する第1キー画像データ集合(K)を作成することと、
前記第1キー画像データ集合(K)の前記少なくとも二つの異なるキー画像を物理ディスプレイ(13)に周期的に表示することと、
前記物理ディスプレイを含むシーンをカメラ(C)で録画することにより前記シーンの少なくとも第1の元映像ストリーム(O1)を作成することであって、前記第1の元映像ストリームが、前記第1キー画像データ集合(K)の前記少なくとも二つの異なるキー画像(K1,K2)の各々を前記物理ディスプレイ(13)に表示するのと同時に捕捉されるキー映像フレーム(FK1,FK2)を包含することと、
前記キー映像フレーム(FK1,FK2)で視認可能な前記物理ディスプレイ(13)のアクティブエリア(A)に対応するマスクエリア(MA)を、連続キー映像フレーム(FK1,FK2)から得られた差分画像(ΔFK)から作成することと、
前記第1の元映像ストリーム(O1,O2)の前記マスクエリア(MA)へ代替画像コンテンツ(I)を挿入することにより少なくとも一つの代替映像ストリーム(V)を作成することと、
前記少なくとも一つの代替映像ストリーム(V)を放送することと、
を包含し、
前記連続キー映像フレーム(FK1,FK2)の間の強度差を判断することにより前記差分画像(ΔFK)が得られる、方法。 - 前記キー画像(K1,K2)が異なるモノクロ画像である、請求項1に記載の方法。
- 前記強度差に閾値を適用することにより前記マスクエリア(MA)が作成される、請求項2に記載の方法。
- 前記キー画像(K1,K2)が異なる画像パターンを包含する、請求項1に記載の方法。
- 一方のキー画像(K1)の前記画像パターンがモノクロのチェッカーボードパターンであり、他方のキー画像(K2)の前記画像パターンが対応する逆のチェッカーボードパターンである、請求項4に記載の方法。
- 前記差分画像にエッジ・ボーダー検出アルゴリズムを適用することによりマスク(M)が作成される、請求項4または5に記載の方法。
- 物理ディスプレイの光学歪みデータが前記マスクエリア(MA)から判断される、請求項6に記載の方法。
- 前記第1キー画像データ集合(K)が前記パターン化されたキー画像(K1、K2)およびモノクロ画像(K3)を包含する、請求項4から7のいずれか一項に記載の方法。
- 直接視聴者により、また任意で放送視聴者により視聴される画像データ(M)を包含する第2の画像データ集合が作成される、請求項1から8のいずれか一項に記載の方法。
- 前記物理ディスプレイがLEDディスプレイである、請求項1から9のいずれか一項に記載の方法。
- 前記LEDディスプレイが看板または掲示板である、請求項10に記載の方法。
- 前記シーンがスポーツイベントまたはエンターテインメントイベントの一部である、請求項1から11のいずれか一項に記載の方法。
- 映像ストリームにおける動的画像コンテンツ置換のためのシステムであって、
少なくとも一つの物理ディスプレイ(12,13)と、
少なくとも第1キー画像データ集合(K)を前記物理ディスプレイ(12,13)に表示するための制御インタフェース(17)と、
前記物理ディスプレイを含むシーンの少なくとも一つの元映像ストリーム(O1)を作成するための少なくとも一つのカメラユニット(C)であって、少なくとも一つの前記元映像ストリームが、前記第1キー画像データ集合(K)の少なくとも二つの異なるキー画像(K1,K2)の各々を前記物理ディスプレイ(12,13)に表示するのと同時に捕捉されるキー映像フレーム(FK1,FK2)を包含する、少なくとも一つのカメラユニット(C)と、
前記キー映像フレームで視認可能な前記物理ディスプレイ(12,13)のアクティブエリアに対応するマスクエリア(MA)を、連続キー映像フレーム(FK1,FK2)から得られた差分画像(ΔFK)から作成するための手段であって、前記差分画像(ΔFK)は、前記連続キー映像フレーム(FK1,FK2)の間の強度差を判断することにより得られる手段と、
代替画像コンテンツ(I)のための記憶手段と、
前記元映像ストリーム(O1)の前記マスクエリア(MA)へ前記代替画像コンテンツ(I)を挿入することにより少なくとも一つの代替映像ストリーム(V)を作成するための手段と、
前記少なくとも一つの代替映像ストリーム(V)を放送するための手段と、
を包含するシステム。 - 前記第1キー画像データ集合(K1,K2,K3)と少なくとも第2の画像データ(M)とをタイムスライス多重化方式で前記物理ディスプレイ(12,13)に表示するように前記制御インタフェース(17)が適応化される、請求項13に記載のシステム。
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EP18186201.2 | 2018-07-27 | ||
PCT/EP2019/070185 WO2020021067A1 (en) | 2018-07-27 | 2019-07-26 | Method and system for dynamic image content replacement in a video stream |
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EP (1) | EP3831049B1 (ja) |
JP (1) | JP7447077B2 (ja) |
CN (1) | CN112514369B (ja) |
AU (1) | AU2019311295A1 (ja) |
CA (1) | CA3105905A1 (ja) |
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WO (1) | WO2020021067A1 (ja) |
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EP4104164A1 (en) | 2020-02-10 | 2022-12-21 | Appario Global Solutions (AGS) AG | Method and device for reducing motion blur on displays |
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US11849244B2 (en) * | 2021-07-22 | 2023-12-19 | Grass Valley Canada | System and method for temporal keying in a camera |
DE102021215048A1 (de) * | 2021-12-27 | 2023-06-29 | Friedrich-Schiller-Universität Jena | Anordnung und Verfahren zum Unterscheiden zwischen einem Hintergrund und einem Vordergrundobjekt einer Szene |
WO2023175114A1 (en) * | 2022-03-16 | 2023-09-21 | Pucki Gmbh | Method for producing a video stream |
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