JP4746909B2 - ビデオシーケンスの補助データ処理 - Google Patents
ビデオシーケンスの補助データ処理 Download PDFInfo
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- JP4746909B2 JP4746909B2 JP2005123748A JP2005123748A JP4746909B2 JP 4746909 B2 JP4746909 B2 JP 4746909B2 JP 2005123748 A JP2005123748 A JP 2005123748A JP 2005123748 A JP2005123748 A JP 2005123748A JP 4746909 B2 JP4746909 B2 JP 4746909B2
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Description
ymax=列方向の画素数/Y
1=静止画
1=映画フィルム
910,920,930,940 垂直方向に隣接するデータ項目
Claims (20)
- それぞれが複数の画像ブロックに分割されるビデオ画像から構成されるビデオシーケンスの補助的な情報を処理するための方法であって、当該方法は、
前記複数の画像ブロックの各々について、動画像データか静止画像データかを示す第1の情報、フィルムモードデータかビデオモードデータかを示す第2の情報、及び当該フィルムモードに関して画像ブロックの動き段階を示す第3の情報を含む補助的なデータ項目のフィールドを受け取るステップと、
水平方向又は垂直方向のいずれかに直列的に隣接しており、中央の画像ブロックの前記補助的なデータ項目が残りの画像ブロックの前記補助的なデータ項目と異なる、少なくとも3つの画像ブロックを検出するステップと、
前記異なるデータ項目が前記第1又は第2の情報である場合、前記中央の画像ブロックの前記補助的なデータ項目を、前記残りの画像ブロックのいずれかの前記補助的なデータ項目に置き換える第1のフィルタリングステップと、
前記異なるデータ項目が前記第3の情報である場合、前記中央の画像ブロックの前記補助的なデータ項目を、前記残りの画像ブロックの前記補助的なデータ項目の平均値を求め、求めた平均値の端数を切り上げた値に置き換える第2のフィルタリングステップとを備える、方法。 - 前記第1の情報は、1ビットで構成される、請求項1に記載の方法。
- 前記第2の情報は、1ビットで構成される、請求項1に記載の方法。
- 前記第3の情報は、少なくとも3ビットで構成される、請求項1に記載の方法。
- 前記少なくとも3つのビットは、PAL規格の動きパターンを表す2ビットの組み合わせを含む、請求項4に記載の方法。
- 前記少なくとも3つのビットは、NTSC規格の動きパターンを表す5ビットの組み合わせを含む、請求項4又は5に記載の方法。
- 前記少なくとも3つのビットは、画像の場面変化を表すビットの組み合わせを含む、請求項4〜6のいずれかに記載の方法。
- 前記検出するステップは、前記フィールド内の前記補助的なデータ項目と予め定めた不規則なパターンとを比較するステップを含み、
前記第1のフィルタリングステップは、前記予め定めた不規則なパターンと一致する前記補助的なデータ項目が検出されると、当該検出された補助的なデータ項目を予め定めた置換パターンに置き換えるステップを含む、請求項1〜7のいずれかに記載の方法。 - 前記予め定めた置換パターンは、対応する前記予め定めた不規則なパターンと関連づけて格納される、請求項8に記載の方法。
- 動き補償に基づいてビデオ画像から構成されるシーケンスを補間する補間方法であって、請求項1〜9のいずれかに記載の処理方法を備え、当該処理方法に従って生成された前記補助的なデータ項目のフィールドを動き補償後の補間処理に用いる、補間方法。
- それぞれが複数の画像ブロックに分割されるビデオ画像から構成されるビデオシーケンスの補助的な情報を処理するための信号処理器であって、
前記複数の画像ブロックの各々について、動画像データか静止画像データかを示す第1の情報、フィルムモードデータかビデオモードデータかを示す第2の情報、及び当該フィルムモードに関して画像ブロックの動き段階を示す第3の情報を含む補助的なデータ項目のフィールドを受け取る手段と、
水平方向又は垂直方向のいずれかに直列的に隣接しており、中央の画像ブロックの前記補助的なデータ項目が残りの画像ブロックの前記補助的なデータ項目と異なる、少なくとも3つの画像ブロックを検出する手段と、
前記異なるデータ項目が前記第1又は第2の情報である場合、前記中央の画像ブロックの前記補助的なデータ項目を、前記残りの画像ブロックのいずれかの前記補助的なデータ項目に置き換える第1のフィルタ手段と、
前記異なるデータ項目が前記第3の情報である場合、前記中央の画像ブロックの前記補助的なデータ項目を、前記残りの画像ブロックの前記補助的なデータ項目の平均値を求め、求めた平均値の端数を切り上げた値に置き換える第2のフィルタ手段を備える、信号処理器。 - 前記第1の情報は、1ビットで構成される、請求項11に記載の信号処理器。
- 前記第2の情報は、1ビットで構成される、請求項11に記載の信号処理器。
- 前記第3の情報は、少なくとも3ビットで構成される、請求項11に記載の信号処理器。
- 前記少なくとも3つのビットは、PAL規格の動きパターンを表す2ビットの組み合わせを含む、請求項14に記載の信号処理器。
- 前記少なくとも3つのビットは、NTSC規格の動きパターンを表す5ビットの組み合わせを含む、請求項14又は15に記載の信号処理器。
- 前記少なくとも3つのビットは、画像の場面変化を表すビットの組み合わせを含む、請求項14〜16のいずれかに記載の信号処理器。
- 少なくとも1つの予め定めた不規則なパターンを記憶するメモリをさらに備え、
前記検出手段は、前記フィールド内の前記補助的なデータ項目と前記予め定めた不規則なパターンとを比較し、
前記第1のフィルタ手段は、前記予め定めた不規則なパターンと一致する前記補助的なデータ項目が検出されると、当該検出された補助的なデータ項目を予め定めた置換パターンに置き換える、請求項11〜17のいずれかに記載の信号処理器。 - 前記メモリは、前記予め定めた置換パターンを、対応する前記予め定めた不規則なパターンと関連づけて格納する、請求項18に記載の信号処理器。
- 動き補償に基づいてビデオ画像から構成されるシーケンスを補間する補間器であって、
請求項11〜19のいずれかに記載の信号処理器を備え、当該信号処理器によって生成された前記補助的なデータ項目のフィールドを動き補償後の補間処理に用いる、補間器。
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EP04010302A EP1592259B1 (en) | 2004-04-30 | 2004-04-30 | Processing auxiliary data of video sequences |
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CN1960520B (zh) * | 2006-09-30 | 2011-02-23 | 中兴通讯股份有限公司 | 一种在移动多媒体广播中传递辅助数据的方法 |
US8275232B2 (en) * | 2008-06-23 | 2012-09-25 | Mediatek Inc. | Apparatus and method of transmitting / receiving multimedia playback enhancement information, VBI data, or auxiliary data through digital transmission means specified for multimedia data transmission |
US9124874B2 (en) * | 2009-06-05 | 2015-09-01 | Qualcomm Incorporated | Encoding of three-dimensional conversion information with two-dimensional video sequence |
CN103209329B (zh) * | 2012-11-29 | 2016-12-28 | 浙江师范大学 | 一种图像处理中的差错隐藏算法 |
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JP2004064788A (ja) * | 2002-07-25 | 2004-02-26 | Samsung Electronics Co Ltd | デインタレーシング装置及び方法 |
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JP2005318588A (ja) | 2005-11-10 |
EP1592259A1 (en) | 2005-11-02 |
CN100466684C (zh) | 2009-03-04 |
EP1592259B1 (en) | 2011-10-05 |
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