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Final Review

Digital Media Computing. Final Review. by Amy Zhang. Lecture 1. What is multimedia? What are the differences between Hyptertext, Hypermedia and multimedia ? What are the Multimedia Authoring Metaphors? What is sprite animation? How? *

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Final Review

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  1. Digital Media Computing Final Review by Amy Zhang

  2. Lecture 1 What is multimedia? What are the differences between Hyptertext, Hypermedia and multimedia ? What are the Multimedia Authoring Metaphors? What is sprite animation? How? * What are the video transitions? Dissolve? How to formulate? *

  3. Lecture 2 What are the properties of 1-bit, 8-bit gray level/color, 24-bit images?* What is bit plane slicing?* What is dithering, ordered dithering? The algorithm?* What is a 3D color histogram? How to form it from a color image? * How to devise a color look-up table? What is the medium-cut algorithm?* What are the details of GIF87? How to display an image in a 4-pass sequence?*

  4. Lecture 3 What are the types of video signals? What is Analog Video? What are the 2 types of scanning? How?* What is the advantage of interlaced video? What are its problems?* What is NTSC Video? The details? The horizontal retrace, vertical retrace? * NTSC Color Model and Modulation, decoding? What is PAL video? The details?* What is Digital video? The chroma subsampling? *

  5. Lecture 4 How to digitalize sound? The basic concepts: sampling, quantization, Nyquist Theorem? What is bitrate? * What are the Nyquist rate, Nyquist frequency, SNR, SQNR? How to calculate?* What are the differences between Linear and Non-linear Quantization? μ-law and A-law? What are the components of a MIDI messages? What are the types of MIDI messages? What are PCM, DPCM, DM? Given a sequence of input signal values, how to get the reconstructed values? *

  6. Lecture 5 What is Lossless Image Compression? What is compression ratio? What is Run-Length Coding? How? * What is Variable-Length Coding (VLC) ? Shannon-Fano Algorithm and Huffman Coding.How? * What is Dictionary-based Coding ? LZW compression and decompression. How? * What is Arithmetic Coding and decoding? How? * Given a sequence of data, how to get the encoded/decoded data? * What is the lossless JPGE?

  7. Lecture 6 What is Vector Quantization? * What is DCT and how? 1D and 2D ? Its properties? *

  8. Lecture 7 What is the JPEG standard? How? What is the JPEG 2000? Its difference with JPEG?

  9. Lecture 8 What is motion estimation? What is motion compensation? Why? The steps? * What is target frame? Reference frame? * How to get motion vectors? The 2D-logarithmic-search? The Hierarchical Search ?* Forward and backward prediction? * What is the H.261 coding steps? What are the I-frame? P-frame? *

  10. Lecture What is the motion compensation in MPEG1? Why it is need for Bidirectional Search? What is B-frame? * How MPEG1 coding steps work?

  11. Lecture 10 What is the Object-based Visual Coding in MPEG-4? What is the Synthetic Object Coding in MPEG-4? What are MPEG-4 Object types, Profile and Levels?

  12. Lecture 1 What is multimedia? What are the differences between Hyptertext, Hypermedia and multimedia ? What are the Multimedia Authoring Metaphors? What is sprite animation? How? * What are the video transitions? How to formulate? *

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