Henson, Andy

Herveille, Richard

Video compression systems

## Common

The 'common' block contains all modules which are used by all (or almost all) compression systems. Examples of these modules are: - DCT, IDCT - Quantization, Dequantization - Entropy encoders, decoders - Motion estimater, compensators - etc.  
**Available blocks** **JPEG/MPEG hardware block**

-   Hardware parallel DCT, IDCT performing up to 8.3GMACs per sec, or 130million 8x8blocks per sec.
-   QNR (Quantization and Rounding). User programmable entropy encoder used by JPEG and MPEG.
-   Run length encoder. Performs the Run-Lenght-Encoding used in JPEG and MPEG.
-   Huffman Encoder / Decoder. Performs Huffman encoding / decoding. Provided with JPEG default DC/AC Luminance/Chrominance tables.
**Color space converters**-   Multiplierless YCrCb -> RGB converter
-   Multiplierless RGB -> YCrCb converter
All cores are available in the /video\_compression\_systems/common directory.


<h2 id="common">Common</h2>
<p>The 'common' block contains all modules which are used by all (or almost all) compression systems. Examples of these modules are:

- DCT, IDCT
- Quantization, Dequantization
- Entropy encoders, decoders
- Motion estimater, compensators
- etc.
<br />

<b>Available blocks</b>

<b>JPEG/MPEG hardware block</b>
<li>Hardware parallel DCT, IDCT performing up to 8.3GMACs per sec, or  130million 8x8blocks per sec.</li>
<li>QNR (Quantization and Rounding). User programmable entropy encoder used by JPEG and MPEG.</li>
<li>Run length encoder.
Performs the Run-Lenght-Encoding used in JPEG and MPEG.</li>
<li>Huffman Encoder / Decoder.
Performs Huffman encoding / decoding. Provided with JPEG default DC/AC Luminance/Chrominance tables.</li>

<b>Color space converters</b>
<li>Multiplierless YCrCb -&gt; RGB converter</li>
<li>Multiplierless RGB -&gt; YCrCb converter</li>



All cores are available in the /video_compression_systems/common directory.</p>


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Video compression systems

Common