技術摘要 / Our Technology: |
一種空間錯誤隱藏方法,係利用與該缺失圖塊相鄰的複數個正確圖塊,經適當分類而選取適當的空間錯誤隱藏演算法,進行內插像素補償或匹配圖塊複製,藉以獲得該缺失圖塊的影像資料,進而隱藏該缺失圖塊對整個圖框影像的影響。該空間錯誤隱藏演算法包括雙線性內插法、方向性內插法、多方向內插法以及最佳鄰近匹配法。該空間錯誤隱藏方法進一步包括一快速運算方法,利用原有圖框的編碼資料中與該缺失圖塊相關的影像方向性資料,直接進行適當的空間錯誤隱藏處理,以節省判斷運算的時間,加快處理速度。
A spatial error concealment (SEC) method for concealing a spatial image error of an encoded image frame caused by a damaged macroblock (MB) is provided. The SEC method selects a proper SEC algorithm by adaptively classifying a plurality of correct MBs adjacent to the damaged MB, so as to execute interpolation pixel compensation or matching block copying, thus obtaining image data of the damaged MB. In such a way, the damaged MB is processed to apply the least affection to the entire image frame. The SEC algorithm is selected from bilinear interpolation (BI) method, directional interpolation (DI) method, multi-directional interpolation (MDI) method, and best neighborhood matching (BNM) method. The SEC method further includes a fast determination calculation, which utilizes image directional data related to the damaged MB in coding data of the original frame to execute a direct SEC process, for saving time on determination calculation, thus accelerating the processing speed.
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專利簡述 / Intellectual Properties: |
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聯繫方式 / Contact: |
臺大產學合作總中心 / Center of Industry-Academia Collaboration, NTU |
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Email:ordiac@ntu.edu.tw |
電話/Tel:02-3366-9945 |
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