genpark-discrete-cosine-transform-dct2-jpeg-skill
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Type-II Discrete Cosine Transform (DCT-II) and orthonormal Inverse DCT with block-based energy compaction
README.md
Discrete Cosine Transform (DCT-II) Skill
Orthonormal Type-II Discrete Cosine Transform engine providing exceptional spectral energy compaction for JPEG image compression and audio codecs.
flowchart LR
Spatial["Spatial Domain Block / Sample Vector"] --> DCT["Type-II Cosine Kernel Modulation"]
DCT --> Energy["Compacted Frequency Coefficients (Dominant DC + AC)"]
Energy --> IDCT["Orthonormal Type-III Reconstruction"]
IDCT --> Spatial
Features
- 100% Python Standard Library: Pure standard trigonometric formulation.
- Orthonormal Normalization: Preserves total signal energy (Parseval identity).
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