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多重視訊編碼器在單一視訊源下之恆定畫質位元率控制系統
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刊登日期:2014/05/21 |
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‧ 專利名稱 |
多重視訊編碼器在單一視訊源下之恆定畫質位元率控制系統 |
‧ 專利證書號 |
I326435 US8223836
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‧ 專利權人 |
國立臺灣大學 |
‧ 專利國家
(申請日) |
中華民國 (2007/03/13) 美國 (2007/08/17)
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‧ 發明人/PI |
吳秉浩 ,陳宏銘,
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‧ 單位 |
電信工程學研究所
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‧ 簡歷/Experience |
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技術摘要 / Our Technology: |
本發明提供一種多重視訊編碼器在單一視訊源下之恆定畫質位元率控制系統及方法,其係應用於監視系統中,利用一重點解碼器將視訊錄像切割出一重點影像區塊,而原始的視訊錄像則傳送至一基本編碼器中以低解析度編碼,而編碼後之資料則在一重點編碼器中進行壓縮,並利用本發明所提供之方法控制視訊錄像中每一畫面之位元傳輸速度,以節省位元率,並使每一畫面間之畫質接近且重點影像區塊之顯示畫面清晰。
A constant-quality rate control system and algorithm for multiple encoders with a single video source are disclosed. The system comprises a base encoder, a region of interest (ROI) detector, and at least one ROI encoder. The base encoder encodes a base video sequence which is a down-sampled version of a video sequence and sends the base video sequence to a multiplexer. The ROI detector extracts an ROI video sequence from the original video sequence. The ROI encoder encodes the ROI video sequence and sends it to the multiplexer. The ROI encoder uses information obtained during encoding of the base video sequence to improve the encoding of the ROI video sequence. The information of the base video sequence are used to better control the bit-rate and the quality of the ROI video sequence.
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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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