JP4640515B2 - サムネイル生成装置、サムネイル生成方法、及びサムネイル生成プログラム - Google Patents
サムネイル生成装置、サムネイル生成方法、及びサムネイル生成プログラム Download PDFInfo
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Description
図1は、本発明の実施例1であるサムネイル生成装置で用いるためのAVストリーム及びストリーム管理情報を生成して記録媒体に記録するビデオカメラの構成を示した構成図である。
図2は、本発明の実施例1であるサムネイル生成装置の構成を示した構成図である。
次に、ビデオカメラ101が備える顔検出部116が実行する顔検出処理について説明する。
次に、本発明の実施例1であるサムネイル生成装置1の作用について説明する。
本発明の実施例1であるサムネイル生成装置1の動画像抽出処理の詳細について説明する。
本発明の実施例1であるサムネイル生成装置1の動画サムネイル生成及び表示処理の詳細について説明する。
なお、(X1/X2)のX2の値は、図11(a)に示したオリジナルの動画像にフレーム中のX2の大きさではなく、図11(b)に示した動画サムネイルに合わせられた動画像のフレーム中のX2の大きさを表している。このように、縮小拡大率算出部20bは、矩形領域501のサイズがハイライト枠17kのサイズと同一となるように、動画像の縮小拡大率を算出するので、(X1/X)よりも(X1/X2)が大きい場合、動画サムネイルとしては拡大されて表示されているように見えるが、実際には、この動画サムネイルの画像は元の動画像から縮小または拡大されて表示されることとなる。
そして、縮小拡大率算出部20bは、カウンタjの値を“1”だけ加算した後(ステップS308)、カウンタjの値が、顔検出された顔検出領域の数Nを越えたか否かを判定する(ステップS309)。
本発明の実施例2であるサムネイル生成装置に供給するためのAVストリーム及びストリーム管理情報を記録媒体Aに記録するビデオカメラ101の構成は、本発明の実施例1であるサムネイル生成装置1に供給するためのAVストリーム及びストリーム管理情報を記録媒体Aに記録するビデオカメラ101と同一構成を有するので、説明を省略する。
図13は、本発明の実施例2であるサムネイル生成装置1Aの構成を示した構成図である。
11…デマルチプレクサ
12…AC3デコーダ
13…スピーカ
14…H.264デコーダ
15…縮小拡大部
16…加算器
17…ユーザインタフェース部
17a…画像表示部
17b…操作ボタン
17c…スライダー
17d…サムネイル表示領域
17e…操作ガイド表示領域
17f…ページ表示領域
17g…画像表示部
17k…ハイライト枠
17h…動画再生画面
17j…動画サムネイル
18…OSD生成部
19…動画サムネイル時間記憶部
20,20A,131…CPU
20a…動画像抽出部
20b,20c…縮小拡大率算出部
20d…サムネイル区間決定部
21…顔特徴情報記憶部
101…ビデオカメラ
111…光学レンズ
112…画像素子部
113…信号処理部
114…H.264エンコーダ
115…マルチプレクサ
116…顔検出部
117…加算器
121…マイク
122…A/D変換部
123…AC3エンコーダ
Claims (5)
- 動画像の第1の所定期間内において、前記第1の所定期間よりも短い第2の所定期間毎に、前記動画像を構成する各画像を抽出する動画像抽出手段と、
抽出された各画像に含まれる人物の顔の領域を積分し、この積分された顔の領域を囲むように顔表示領域を決定し、この決定された顔表示領域のサイズが、予め動画サムネイルを表示するために定められた所定の表示領域のサイズと同一となるように、前記動画像の縮小拡大率を算出する縮小拡大率算出手段と、
算出された前記縮小拡大率に基づいて、前記動画像を縮小または拡大し、前記動画サムネイルを生成する動画サムネイル生成手段と、
を備えたことを特徴とするサムネイル生成装置。 - 前記動画像抽出手段によって抽出された各画像のうち、人物の顔の領域が存在する画像の連続する数に基づいて、前記第1の所定期間を1つ以上決定するサムネイル区間決定手段
を更に備えることを特徴とした請求項1記載のサムネイル生成装置。 - 前記縮小拡大率算出手段は、
前記顔表示領域の面積の値を分母とし、前記顔の領域の合計面積の値を分子として求めた比の値が、所定の閾値より小さい場合、前記顔の領域のうち中心に近くかつ面積が最も大きい顔の領域を代表領域として、この代表領域のサイズが前記表示領域のサイズと同一となるように、前記縮小拡大率を算出する
ことを特徴とした請求項1又は2記載のサムネイル生成装置。 - 人物の顔を一意に識別可能な顔の特徴を顔特徴情報として記憶する顔特徴情報記憶手段と、を更に備え、
前記縮小拡大率算出手段は、
前記顔の領域内に存在する顔の特徴が、前記顔特徴情報記憶手段に記憶されている顔特徴情報が示す顔の特徴と一致又は近似しているか否かを判定し、一致又は近似していると判定された場合に、この一致又は近似している顔の特徴に対応する前記顔の領域のサイズを前記表示領域のサイズと同一となるように、前記縮小拡大率を算出する
ことを特徴とした請求項1又は2記載のサムネイル生成装置。 - 動画像の第1の所定期間内において、前記第1の所定期間よりも短い第2の所定期間毎に、前記動画像を構成する各画像を抽出する動画像抽出ステップと、
抽出された各画像に含まれる人物の顔の領域を積分し、この積分された顔の領域を囲むように顔表示領域を決定し、この決定された顔表示領域のサイズが、予めサムネイルを表示するために定められた所定の表示領域のサイズと同一となるように、前記動画像の縮小拡大率を算出する縮小率算出ステップと、
算出された前記縮小拡大率に基づいて、前記動画像を縮小または拡大し、前記動画サムネイルを生成する動画サムネイル生成ステップと、
を有することを特徴とするサムネイル生成方法。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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JP2009073345A JP4640515B2 (ja) | 2009-03-25 | 2009-03-25 | サムネイル生成装置、サムネイル生成方法、及びサムネイル生成プログラム |
CN201080013004.3A CN102362491B (zh) | 2009-03-25 | 2010-01-28 | 缩略图生成装置及缩略图生成方法 |
US13/259,685 US8849093B2 (en) | 2009-03-25 | 2010-01-28 | Thumbnail generating apparatus and thumbnail generating method |
KR1020117024660A KR101296152B1 (ko) | 2009-03-25 | 2010-01-28 | 섬네일 생성 장치 및 섬네일 생성 방법 |
PCT/JP2010/051100 WO2010109943A1 (ja) | 2009-03-25 | 2010-01-28 | サムネイル生成装置及びサムネイル生成方法 |
EP10755744.9A EP2413597B1 (en) | 2009-03-25 | 2010-01-28 | Thumbnail generation device and method of generating thumbnail |
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JP2009073345A JP4640515B2 (ja) | 2009-03-25 | 2009-03-25 | サムネイル生成装置、サムネイル生成方法、及びサムネイル生成プログラム |
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JP2010226572A JP2010226572A (ja) | 2010-10-07 |
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KR101952260B1 (ko) * | 2012-04-03 | 2019-02-26 | 삼성전자주식회사 | 다수의 동영상 썸네일을 동시에 표시하기 위한 영상 재생 장치 및 방법 |
US10368010B2 (en) * | 2012-07-31 | 2019-07-30 | Nec Corporation | Image processing system, image processing method, and program |
CN102999599B (zh) * | 2012-11-19 | 2015-10-07 | 北京奇虎科技有限公司 | 一种图片展示方法和装置 |
KR20140100784A (ko) * | 2013-02-07 | 2014-08-18 | 삼성전자주식회사 | 디스플레이 장치 및 디스플레이 방법 |
CN104063844B (zh) * | 2013-03-21 | 2019-01-15 | 腾讯科技(深圳)有限公司 | 一种缩略图生成方法及系统 |
JP2014220724A (ja) * | 2013-05-10 | 2014-11-20 | ソニー株式会社 | 表示制御装置、表示制御方法、およびプログラム |
CN104252696B (zh) * | 2013-06-28 | 2017-12-12 | 广州华多网络科技有限公司 | 获取缩略图的方法及装置 |
CN103927713B (zh) * | 2014-04-23 | 2017-07-18 | 锤子科技(北京)有限公司 | 图片缩略图的获取方法及装置 |
CN104063444A (zh) * | 2014-06-13 | 2014-09-24 | 百度在线网络技术(北京)有限公司 | 缩略图的生成方法和装置 |
KR102252448B1 (ko) | 2014-09-12 | 2021-05-14 | 삼성전자주식회사 | 제어 방법 및 그 방법을 처리하는 전자장치 |
WO2016051803A1 (ja) * | 2014-10-03 | 2016-04-07 | パナソニックIpマネジメント株式会社 | コンテンツ受信装置、コンテンツ受信システム、コンテンツ受信装置の制御方法、およびプログラム |
US10051313B2 (en) | 2014-10-03 | 2018-08-14 | Panasonic Intellectual Property Management Co., Ltd. | Content reception device, content reception system, content reception device control method, and program |
CN104504104B (zh) * | 2014-12-30 | 2018-09-07 | 百度在线网络技术(北京)有限公司 | 用于搜索引擎的图片物料处理方法、装置和搜索引擎 |
JP6579925B2 (ja) * | 2015-11-17 | 2019-09-25 | キヤノン株式会社 | 画像再生装置およびその制御方法ならびにプログラムならびに記録媒体 |
US10347294B2 (en) * | 2016-06-30 | 2019-07-09 | Google Llc | Generating moving thumbnails for videos |
CN106341623A (zh) * | 2016-10-19 | 2017-01-18 | 上海传英信息技术有限公司 | 连拍图片动态缩略图的生成方法及用户终端 |
US11169661B2 (en) * | 2017-05-31 | 2021-11-09 | International Business Machines Corporation | Thumbnail generation for digital images |
JP6958226B2 (ja) * | 2017-10-23 | 2021-11-02 | 富士フイルムビジネスイノベーション株式会社 | 情報処理装置及びプログラム |
JP7171212B2 (ja) * | 2018-04-02 | 2022-11-15 | キヤノン株式会社 | 情報処理装置、画像表示方法、コンピュータプログラム、及び記憶媒体 |
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KR20120001765A (ko) | 2012-01-04 |
CN102362491B (zh) | 2014-06-18 |
CN102362491A (zh) | 2012-02-22 |
EP2413597A1 (en) | 2012-02-01 |
EP2413597B1 (en) | 2015-09-30 |
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