VIN CÔNG NGH THÔNG TIN V TRUYN THÔNG
Bộ môn truyền thông và mạng máy tính
Bài tập lớn môn học
Truyền thông đa phương tiện
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CHUẨN MPEG 1 và MPEG 2
Tổng quan về MPEG
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\cnhằm loại bỏ sự dư thừa dựa vào khả năng lưu ảnh của mắt người cảm thụ.
1.1. Phân cấp cấu trúc của MPEG 1
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• Video Sequence (Cảnh):\‡-Q_&1^-Sequence HeaderO\,{11^-
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Hình 3 Thành phần độ sáng và thành phần độ màu
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1.2.1. Các kiểu khung hình trong MPEG 1
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2.2.4. Mã hóa trong Mpeg 1
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Hình 7 SCRs
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1.4.3. Lượng tử hóa
Hình 12 Sơ đồ biến đổi DCT
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1.4.6. Bit rate control
Hình 16 Bit rate control
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Hình 17 Ba ma trận lượng từ hóa: (a) MQUANT = 2, (b) MQUANT = 4, (c) MQUANT = 6
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