https://github.com/yohhoy/av1-tech

coding tools study in AOM AV1 video codec.
https://github.com/yohhoy/av1-tech

av1 codec video-codec

Last synced: 10 months ago
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coding tools study in AOM AV1 video codec.

• Host: GitHub
• URL: https://github.com/yohhoy/av1-tech
• Owner: yohhoy
• License: mit
• Created: 2018-04-21T13:53:24.000Z (about 8 years ago)
• Default Branch: master
• Last Pushed: 2018-04-29T08:33:34.000Z (about 8 years ago)
• Last Synced: 2025-09-02T06:34:11.818Z (10 months ago)
• Topics: av1, codec, video-codec
• Language: Python
• Homepage:
• Size: 137 KB
• Stars: 11
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# av1-tech

Coding tools study in AOM AV1 video codec.

- `intrapred.py` visualize Intra-predictions

- `maskwedge.py` visualize Wedge masks

- `maskintramodevar.py` visualize Intra mode variant masks

## Intra predictions

|`DC_PRED`|`V_PRED`|`H_PRED`|

|:-------:|:------:|:------:|

|![DC_PRED](image/intra-dc.png "intra-dc.png")|![V_PRED](image/intra-d090.png "intra-d090.png")|![H_PRED](image/intra-d180.png "intra-d180.png")|

|`D45_PRED`|`D135_PRED`|`D113_PRED`|

|:--------:|:---------:|:---------:|

|![D45_PRED](image/intra-d045.png "intra-d045.png")|![D135_PRED](image/intra-d135.png "intra-d135.png")|![D113_PRED](image/intra-d113.png "intra-d113.png")|

|`D157_PRED`|`D203_PRED`|`D67_PRED`|

|:---------:|:---------:|:--------:|

|![D157_PRED](image/intra-d157.png "intra-d157.png")|![D203_PRED](image/intra-d203.png "intra-d203.png")|![D67_PRED](image/intra-d067.png "intra-d067.png")|

|`SMOOTH_PRED`|`SMOOTH_V_PRED`|`SMOOTH_H_PRED`|

|:-----------:|:-------------:|:-------------:|

|![SMOOTH_PRED](image/intra-smooth.png "intra-smooth.png")|![SMOOTH_V_PRED](image/intra-smooth-v.png "intra-smooth-v.png")|![SMOOTH_H_PRED](image/intra-smooth-h.png "intra-smooth-h.png")|

|`PAETH_PRED`|

|:--------:|

|![PAETH_PRED](image/intra-paeth.png "intra-paeth.png")|

Directional Intra prediction (8 mode x 7 delta angle):

![Dnn_PRED](image/intra-directional.png "intra-directional.png")

## Wedge masks

![WedgeMask](image/mask-wedge.png "mask-wedge.png")

## Intra mode variant masks

![IntraModeVariantMask](image/mask-intramodevar.png "mask-intramodevar.png")

## License

MIT License