Tài liệu Image and Videl Comoression P10 ppt
Tài liệu Image and Videl Comoression P10 ppt
... the international video
coding standards: ISO, MPEG-1 and MPEG-2, and ITU H.261, and H.263. These standards will
be introduced in detail in Chapters 16, 17, and 19, respectively.
It is interesting ... between multigrid and multiresolution
structures: both are hierarchical in nature and the splitting and merging can be easily performed.
An example of an image decomposition and...
Tài liệu Image and Videl Comoression P1 pptx
... in image and video compression.
* In this book, the terms image and video data compression, image and video compression, and image and video coding
are synonymous.
© 2000 by CRC Press LLC
and
(1.19)
In ... reconstructed image and video is application dependent. In medical
diagnoses and some scientific measurements, we may need the reconstructed image and video t...
Tài liệu Image and Videl Comoression P6 ppt
... fact that there are several international standards concerning still image coding
(for both bilevel and multilevel images), a brief summary of them and a performance comparison
have been presented ... is also used in the UNIX Compress
command.
6.5 INTERNATIONAL STANDARDS FOR LOSSLESS STILL
IMAGE COMPRESSION
In the previous chapter, we studied Huffman and arithmetic coding techniques...
Tài liệu Image and Videl Comoression P4 ppt
... the
image G and the basis image I
u,v
(Wintz, 1972).
Note that basis images have nothing to do with the input image. Instead, it is completely defined
by the transform itself. That is, basis images ... estimation; subimage sizes
of 4, 8, and 16 are used most often. In particular, N = 8 is adopted by the international still image
coding standard, JPEG, as well as video coding standa...
Tài liệu Image and Videl Comoression P14 pptx
... several digital binary images and compute their entropies. If one image has almost
equal number of zeros and ones and another has a different number of zeros and ones,
which image has larger entropy? ... related
standards include JPEG standards, MPEG-1,2,4 standards, and H.261 and H.263 video teleconfer-
encing coding standards as shown in Table 15.2. It should be noted that t...
Tài liệu Image and Videl Comoression P11 ppt
... techniques. The pioneering Netravali and Robbins
algorithm and several other algorithms such as the Bergmann (1982), the Cafforio and Rocca, the
Walker and Rao, and the Bergmann (1984) are discussed ... very small.
12.4.4 THE WALKER AND RAO ALGORITHM
Walker and Rao developed an algorithm based on the steepest descent method (Walker and Rao,
1984; Tekalp, 1995), and also with...
Tài liệu Image and Videl Comoression P2 doc
... input image and video are to be encoded. It is not necessary
that the original image and video waveform be quantized and coded: we will show that some
formats obtained from the input image and ... coding and has a direct impact on the bit rate and the distortion of reconstructed
images or videos. We discuss concepts, principles and various quantization techniques which
inc...
Tài liệu Image and Videl Comoression P9 doc
... coding are the image modeling, image analysis, and image synthesis
techniques. Both image analysis and synthesis are based on the image model. The image modeling
techniques used for image coding ... Lundmark, and R. Forchheimer, Image Sequence Coding at Very Low Bitrates: A Review, IEEE
Trans. Image Process., 3(5), 1994.
Li, W. and Y. Zhang, Vector-based signal proce...
Tài liệu Image and Videl Comoression P8 docx
... of
image compression system under development by Joint Photographic Experts Group for still image
coding. This standard is intended to meet a need for image compression with great flexibility and
efficient ... computer-generated imagery or computer graphics.
Compound documents: the new coding standard is desired to be capable of compressing both
continuous-tone and bilevel images. The...
Tài liệu Image and Videl Comoression P7 doc
... CRC Press LLC
Still Image Coding
Standard: JPEG
In this chapter, the JPEG standard is introduced. This standard allows for lossy and lossless encoding
of still images and four distinct modes ... second
layer, and 0.1 bits per pixel at the third layer).
REFERENCES
Digital compression and coding of continuous-tone still images. Requirements and Guidelines, ISO-/IEC
Internat...