Motion JPEG

Motion JPEG

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In multimedia, Motion JPEG is an informal name for a class of video formats where each video frame or interlaced field of a digital video sequence is separately compressed as a JPEG image. Originally developed for multimedia PC applications, where more advanced formats have displaced it, M-JPEG is now used by many portable devices with video-capture capability, such as digital cameras. Motion JPEG uses a lossy form of intraframe compression based on the discrete cosine transform. This mathematical operation converts each frame/field of the video source from the time domain into the frequency domain. A perceptual model based loosely on the human psychovisual system discards high-frequency information, i.e. sharp transitions in intensity, and color hue. In the transform domain, the process of reducing information is called quantization. In laymen's terms, quantization is a method for optimally reducing a large number scale into a smaller one, and the transform-domain is a convenient representation of the image because the high-frequency coefficients, which contribute less to the over picture than other coefficients, are characteristically small-values with high compressibility.show more

Product details

  • Paperback | 116 pages
  • 152 x 229 x 7mm | 181g
  • Lect Publishing
  • United States
  • English
  • 6136702754
  • 9786136702759