Subversion Repositories mpeg2fpga

#LyX 1.5.5 created this file. For more info see http://www.lyx.org/
\lyxformat 276
\begin_document
\begin_header
\textclass scrbook
\begin_preamble
\usepackage{hyperref}
\end_preamble
\language english
\inputencoding auto
\font_roman default
\font_sans default
\font_typewriter default
\font_default_family default
\font_sc false
\font_osf false
\font_sf_scale 100
\font_tt_scale 100
\graphics default
\float_placement h
\paperfontsize default
\spacing single
\papersize default
\use_geometry false
\use_amsmath 0
\use_esint 0
\cite_engine basic
\use_bibtopic false
\paperorientation portrait
\secnumdepth 3
\tocdepth 3
\paragraph_separation indent
\defskip medskip
\quotes_language english
\papercolumns 1
\papersides 1
\paperpagestyle default
\tracking_changes false
\output_changes false
\author "" 
\author "" 
\end_header

\begin_body

\begin_layout Section*
Bilinear Chroma Upsampling
\end_layout

\begin_layout Standard
The chrominance components have half the vertical and half the horizontal
 resolution of the luminance.
 To obtain equal chrominance and luminance resolution, bilinear chroma upsamplin
g is used.
 Bilinear chroma upsampling computes chroma pixel values by vertical and
 horizontal interpolation.
 Vertical interpolation implies adding two rows of chroma values with different
 weights.
 The chroma row closest to the luma row gets weight 3/4, while the chroma
 row farthest from the luma row gets weight 1/4.
 Figures 
\begin_inset LatexCommand ref
reference "fig:Frame-picture,-progressive"

\end_inset

, 
\begin_inset LatexCommand ref
reference "fig:Top-field,-progressive"

\end_inset

 and 
\begin_inset LatexCommand ref
reference "fig:Bottom-field,-progressive"

\end_inset

 illustrate these weights for progressive pictures, while figures 
\begin_inset LatexCommand ref
reference "fig:Top-field,-interlaced"

\end_inset

 and 
\begin_inset LatexCommand ref
reference "fig:Bottom-field,-interlaced"

\end_inset

 show the weights for interlaced pictures.
 
\end_layout

\begin_layout Standard
In figures 
\begin_inset LatexCommand ref
reference "fig:Frame-picture,-progressive"

\end_inset

 to 
\begin_inset LatexCommand ref
reference "fig:Bottom-field,-interlaced"

\end_inset

,
\end_layout

\begin_layout Itemize
00 refers to the first row of luma values of the current macroblock,
\end_layout

\begin_layout Itemize
15 refers to the last row of luma values of the current macroblock,
\end_layout

\begin_layout Itemize
c-1 refers to the last row of chroma values of the macroblock one macroblock
 row up,
\end_layout

\begin_layout Itemize
c0 refers to the first row of chroma values of the current macroblock,
\end_layout

\begin_layout Itemize
c7 refers to the last row of chroma values of the current macroblock,
\end_layout

\begin_layout Itemize
c8 refers to the first row of chroma values of the macroblock one macroblock
 row down.
\end_layout

\begin_layout Standard
The corresponding source file is 
\family typewriter
resample_bilinear.v
\family default
.
\end_layout

\begin_layout Standard
\begin_inset Float figure
wide false
sideways false
status open

\begin_layout LyX-Code
                                        | 3/4 1/4
\end_layout

\begin_layout LyX-Code
                                        |
\end_layout

\begin_layout LyX-Code
00  x x x x x x x x x x x x x x x x     | c0  c-1
\end_layout

\begin_layout LyX-Code
c0  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
01  x x x x x x x x x x x x x x x x     | c0  c1
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
02  x x x x x x x x x x x x x x x x     | c1  c0
\end_layout

\begin_layout LyX-Code
c1  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
03  x x x x x x x x x x x x x x x x     | c1  c2
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
04  x x x x x x x x x x x x x x x x     | c2  c1
\end_layout

\begin_layout LyX-Code
c2  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
05  x x x x x x x x x x x x x x x x     | c2  c3
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
06  x x x x x x x x x x x x x x x x     | c3  c2
\end_layout

\begin_layout LyX-Code
c3  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
07  x x x x x x x x x x x x x x x x     | c3  c4 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
08  x x x x x x x x x x x x x x x x     | c4  c3
\end_layout

\begin_layout LyX-Code
c4  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
09  x x x x x x x x x x x x x x x x     | c4  c5
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
10  x x x x x x x x x x x x x x x x     | c5  c4
\end_layout

\begin_layout LyX-Code
c5  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
11  x x x x x x x x x x x x x x x x     | c5  c6
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
12  x x x x x x x x x x x x x x x x     | c6  c5
\end_layout

\begin_layout LyX-Code
c6  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
13  x x x x x x x x x x x x x x x x     | c6  c7
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
14  x x x x x x x x x x x x x x x x     | c7  c6
\end_layout

\begin_layout LyX-Code
c7  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
15  x x x x x x x x x x x x x x x x     | c7  c8
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        |
\end_layout

\begin_layout Standard
\begin_inset Caption

\begin_layout Standard
\begin_inset LatexCommand label
name "fig:Frame-picture,-progressive"

\end_inset

Frame picture, progressive upsampling
\end_layout

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout LyX-Code
\begin_inset Float figure
wide false
sideways false
status open

\begin_layout LyX-Code
                                        | 3/4 1/4
\end_layout

\begin_layout LyX-Code
                                        |
\end_layout

\begin_layout LyX-Code
00  x x x x x x x x x x x x x x x x     | c0  c-1
\end_layout

\begin_layout LyX-Code
c0  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
02  x x x x x x x x x x x x x x x x     | c1  c0
\end_layout

\begin_layout LyX-Code
c1  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
04  x x x x x x x x x x x x x x x x     | c2  c1
\end_layout

\begin_layout LyX-Code
c2  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
06  x x x x x x x x x x x x x x x x     | c3  c2
\end_layout

\begin_layout LyX-Code
c3  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
08  x x x x x x x x x x x x x x x x     | c4  c3
\end_layout

\begin_layout LyX-Code
c4  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
10  x x x x x x x x x x x x x x x x     | c5  c4
\end_layout

\begin_layout LyX-Code
c5  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
12  x x x x x x x x x x x x x x x x     | c6  c5
\end_layout

\begin_layout LyX-Code
c6  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
14  x x x x x x x x x x x x x x x x     | c7  c6
\end_layout

\begin_layout LyX-Code
c7  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        |
\end_layout

\begin_layout Standard
\begin_inset Caption

\begin_layout Standard
\begin_inset LatexCommand label
name "fig:Top-field,-progressive"

\end_inset

Top field, progressive upsampling
\end_layout

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout LyX-Code
\begin_inset Float figure
wide false
sideways false
status open

\begin_layout LyX-Code
                                        | 3/4 1/4
\end_layout

\begin_layout LyX-Code
                                        |
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
c0  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
01  x x x x x x x x x x x x x x x x     | c0  c1
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
c1  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
03  x x x x x x x x x x x x x x x x     | c1  c2
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
c2  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
05  x x x x x x x x x x x x x x x x     | c2  c3
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
c3  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
07  x x x x x x x x x x x x x x x x     | c3  c4
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
c4  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
09  x x x x x x x x x x x x x x x x     | c4  c5
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
c5  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
11  x x x x x x x x x x x x x x x x     | c5  c6
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
c6  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
13  x x x x x x x x x x x x x x x x     | c6  c7
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
c7  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
15  x x x x x x x x x x x x x x x x     | c7  c8
\end_layout

\begin_layout LyX-Code
                                        |
\end_layout

\begin_layout LyX-Code
                                        |
\end_layout

\begin_layout Standard
\begin_inset Caption

\begin_layout Standard
\begin_inset LatexCommand label
name "fig:Bottom-field,-progressive"

\end_inset

Bottom field, progressive upsampling
\end_layout

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout LyX-Code
\begin_inset Float figure
wide false
sideways false
status open

\begin_layout LyX-Code

\end_layout

\begin_layout LyX-Code
                                        | 3/4 1/4
\end_layout

\begin_layout LyX-Code
                                        |
\end_layout

\begin_layout LyX-Code
00  x x x x x x x x x x x x x x x x     | c0  c-2
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
c0  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
02  x x x x x x x x x x x x x x x x     | c0  c2
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
04  x x x x x x x x x x x x x x x x     | c2  c0
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
c2  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
06  x x x x x x x x x x x x x x x x     | c2  c4
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
08  x x x x x x x x x x x x x x x x     | c4  c2
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
c4  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
10  x x x x x x x x x x x x x x x x     | c4  c6
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
12  x x x x x x x x x x x x x x x x     | c6  c4
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
c6  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
14  x x x x x x x x x x x x x x x x     | c6  c8
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        |
\end_layout

\begin_layout Standard
\begin_inset Caption

\begin_layout Standard
\begin_inset LatexCommand label
name "fig:Top-field,-interlaced"

\end_inset

Top field, interlaced upsampling
\end_layout

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout LyX-Code
\begin_inset Float figure
wide false
sideways false
status open

\begin_layout LyX-Code
                                        | 3/4 1/4
\end_layout

\begin_layout LyX-Code
                                        |
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
01  x x x x x x x x x x x x x x x x     | c1  c-1
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
c1  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
03  x x x x x x x x x x x x x x x x     | c1  c3
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
05  x x x x x x x x x x x x x x x x     | c3  c1
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
c3  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
07  x x x x x x x x x x x x x x x x     | c3  c5
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
09  x x x x x x x x x x x x x x x x     | c5  c3
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
c5  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
11  x x x x x x x x x x x x x x x x     | c5  c7
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
13  x x x x x x x x x x x x x x x x     | c7  c5
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
c7  c   c   c   c   c   c   c   c       | 
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
15  x x x x x x x x x x x x x x x x     | c7  c9
\end_layout

\begin_layout LyX-Code
                                        | 
\end_layout

\begin_layout LyX-Code
                                        |
\end_layout

\begin_layout Standard
\begin_inset Caption

\begin_layout Standard
\begin_inset LatexCommand label
name "fig:Bottom-field,-interlaced"

\end_inset

Bottom field, interlaced upsampling
\end_layout

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout LyX-Code

\end_layout

\end_body
\end_document