JP6467368B2 - イベントのビデオシーケンスを生成する方法及びシステム、並びにこうしたシステムを備えるカメラ - Google Patents
イベントのビデオシーケンスを生成する方法及びシステム、並びにこうしたシステムを備えるカメラ Download PDFInfo
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Description
Claims (8)
- イベントのビデオシーケンスの生成方法であって、前記方法は、
ピクチャグループ内に配列された画像フレームのシーケンスにエンコードされた入力画像フレームを受信することであって、各ピクチャグループが1つのイントラフレーム及びゼロ又はそれ以上の後続するインターフレームを含み、前記画像フレームのシーケンス内の各ピクチャグループがGOP構造を有する、受信すること、
画像フレームのイベント前シーケンス(SEQ1)を、先入先出バッファ(12)に格納することであって、前記イベント前シーケンス(SEQ1)が既定の第1のGOP構造を有する、格納すること、
イベントの通知を受信すること、
前記イベントの通知の受信を受けて、前記イベント前シーケンス(SEQ1)を前記バッファ(12)から読み出すこと、並びに、
画像フレームの前記イベント前シーケンス(SEQ1)と、前記第1のGOP構造とは異なる第2のGOP構造を有するイベント後シーケンス(SEQ2)とを結び付けることによって前記イベントのビデオシーケンスを生成することを含み、
前記第1のGOP構造の第1のGOP長が前記第2のGOP構造の第2のGOP長と異なるという点で、前記第1のGOP構造が前記第2のGOP構造と異なり、各GOP長がそれぞれのピクチャグループに含まれるフレームの数によって規定され、及び、
前記第1のGOP長が既定であり、ユーザ入力により設定され、前記第2のGOP長が動的であることを特徴とする、方法。 - 前記第2のGOP長が前記第1のGOP長よりも長い、請求項1に記載の方法。
- 前記動的GOP長が、1又は複数の入力画像フレームのために決定される動作レベル、1又は複数の入力画像フレームのノイズレベル、前記入力画像フレームがエンコードされるフレームレート、又は前記画像フレームをエンコードする際に設定されるビットレート限界、のうちの少なくとも1つに基づいて設定される、請求項1に記載の方法。
- イベントビデオシーケンスを生成するシステムであって、前記システムは、
ピクチャグループ内に配列された画像フレームのシーケンスにエンコードされた入力画像フレームを受信するように準備された画像受信機(11)であって、各ピクチャグループが1つのイントラフレーム及びゼロ又はそれ以上の後続するインターフレームを含み、前記画像フレームのシーケンス内の各ピクチャグループがGOP構造を有する、画像受信機(11)、
画像フレームのイベント前シーケンス(SEQ1)を、先入先出ベースで格納するように準備されたバッファ(12)であって、前記イベント前シーケンス(SEQ1)が既定の第1のGOP構造を有する、バッファ(12)、
イベントの通知を受信するように準備されたイベント通知受信機(13)、
イベントの通知の受信を受けて、前記イベント前シーケンス(SEQ1)を前記バッファ(12)から読み出し、画像フレームのイベント後シーケンス(SEQ2)と結び付けるように準備された生成モジュール(14)であって、前記イベント後シーケンス(SEQ2)が前記第1のGOP構造とは異なる第2のGOP構造を有する生成モジュール(14)を含み、
前記第1のGOP構造の第1のGOP長が前記第2のGOP構造の第2のGOP長と異なるという点で、前記第1のGOP構造が前記第2のGOP構造と異なり、各GOP長がそれぞれのピクチャグループに含まれるフレームの数によって規定され、及び、
前記第1のGOP長が既定であり、前記第2のGOP長が動的であり、前記システムがさらに、前記規定のGOP長を設定するためのユーザ入力を受け取るように構成されたユーザ入力モジュール(16)を含むことを特徴とする、システム。 - 前記第2のGOP長が前記第1のGOP長よりも長い、請求項4に記載のシステム。
- 1又は複数の入力画像フレームのために決定される動作レベル、1又は複数の入力画像フレームのノイズレベル、前記入力画像フレームがエンコードされるフレームレート、又は前記画像フレームをエンコードする際に設定されるビットレート限界、のうちの少なくとも1つに基づいて、前記動的GOP長を設定するように準備されたGOP長モジュール(15)を更に含む、請求項4に記載のシステム。
- 請求項4から6の何れか一項に記載のシステム(10)を備えるカメラ。
- コンピュータによって実行されたときに請求項1から3の何れか一項に記載の方法を実行するように適合された命令を含むコンピュータ可読記憶媒体。
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EP15159174.0A EP3070695B1 (en) | 2015-03-16 | 2015-03-16 | Method and system for generating an event video sequence, and camera comprising such system |
EP15159174.0 | 2015-03-16 |
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JP2016195385A JP2016195385A (ja) | 2016-11-17 |
JP2016195385A5 JP2016195385A5 (ja) | 2018-06-28 |
JP6467368B2 true JP6467368B2 (ja) | 2019-02-13 |
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EP2407943B1 (en) * | 2010-07-16 | 2016-09-28 | Axis AB | Method for event initiated video capturing and a video camera for capture event initiated video |
TWI430663B (zh) * | 2010-10-28 | 2014-03-11 | Avermedia Information Inc | 多串流視訊系統、視訊監控裝置以及多串流視訊傳輸方法 |
CN104641638B (zh) * | 2012-06-28 | 2018-08-03 | 阿克西斯股份公司 | 使用虚拟帧内帧对视频内容进行编码的系统和方法 |
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TWI647663B (zh) | 2019-01-11 |
CN105991976B (zh) | 2020-04-24 |
KR20160111326A (ko) | 2016-09-26 |
KR101928520B1 (ko) | 2018-12-13 |
CN105991976A (zh) | 2016-10-05 |
TW201643830A (zh) | 2016-12-16 |
EP3070695B1 (en) | 2017-06-14 |
US20160277759A1 (en) | 2016-09-22 |
US10779003B2 (en) | 2020-09-15 |
JP2016195385A (ja) | 2016-11-17 |
EP3239946A1 (en) | 2017-11-01 |
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