Tài liệu Image and Videl Comoression P1 pptx
Tài liệu Image and Videl Comoression P1 pptx
... considering that they play a key role 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.
... reconstructed image and video is application dependent. In medical
diagnoses and some scientific measurements, we may need the reconstructed image and video to...
Tài liệu Image and Videl Comoression P14 pptx
... 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 the JPEG standards ... video-coding standards and were discussed in Chapters 7
and 8, respectively, we include them here for completeness of all international image and video
coding standards.
• JPEG Standard:...
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
... Process.,
3445-3462, Dec. 1993.
Vetterli, M. and J. Kovacevic, Wavelets and Subband Coding, Englewood Cliffs, NJ: Prentice-Hall, 1995.
Woods, J., Ed., Subband Image Coding, Kluwer Academic Publishers, ... dependencies of subbands; the arrow points from the subband of the
parents to the subband of the children. At top left is the lowest-frequency band. (Right) The scanning order
of the s...
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 ... a
zigzag sequence and then divided into several bands. A frequency band is defined in the scan header
by specifying the starting and ending indexes in the zigzag sequence. The band conta...
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 ... black and white. The resolution of these binary
tone images is usually very high. In each scan line, there are many consecutive white and black
pixels, i.e., many alternate white runs...
Tài liệu Image and Videl Comoression P5 pdf
... wide applications in image and video
coding and have been adopted in the international still image coding standard JPEG and video
coding standards H.261, H.263, and MPEG 1 and 2.
When some source ... bilevel
image coding (Langdon and Rissanen, 1981) and adopted by the international standards for bilevel
image compression, JBIG. It has also been adopted by the internation...
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 ... has
been very efficient and was adopted by the international video coding standards H.261, H.263, and
MPEG 1, 2, and 4.
4.6 SUMMARY
In transform coding, instead of the original ima...
Tài liệu Image and Videl Comoression P3 pdf
... the “boy and girl”
image (refer to Figure 1.1) and its difference image obtained by horizontal pixel-to-pixel differ-
encing, shown in Figure 3.1(a) and (b), respectively. Figure 3.1(b) and its ... important role in image and video coding. In
the international coding standard for still images, JPEG (covered in Chapter 7), we can see that
differential coding is used in the loss...
Từ khóa: