# Bioleptic
Wavelet-based signal compression for physiological data (ECG, PPG, accelerometry).
## Algorithm
1. Non-finite substitution (`NaN` → 0, `±inf` → 0/1)
2. Mean-centering + range normalization
3. Multi-level DWT (CDF 5/3 or CDF 9/7, 5 levels)
4. Quantization to `i16` with configurable scale
5. Detail coefficient thresholding
6. Entropy coding with deflate
### Rust
```rust
let compressed = compress(&signal, CompressionOptions::default())?;
let recovered = decompress(&compressed)?;
```
### Python
```bash
pip install bioleptic-py
```
```python
from bioleptic import compress_signal, decompress_signal, BiolpCompressionOptions
compressed = compress_signal(signal, BiolpCompressionOptions("cdf97", 11, "low"))
recovered = decompress_signal(compressed)
```
### JavaScript
```bash
npm install bioleptic-js
```
```js
import {
BiolpCompressionMethod,
BiolpCompressionOptions, BiolpCutoffLevel,
BiolpQuantizationScale,
compress_signal,
decompress_signal
} from "bioleptic-js";
const signal = new Float32Array([1.0, 2.0, 3.0, 4.0, 5.0, 1.0, 2.0, 3.0, 4.0, 5.0, 1.0, 2.0, 3.0, 4.0, 5.0]);
const options = new BiolpCompressionOptions(
BiolpCompressionMethod.Cdf97,
BiolpQuantizationScale.S11,
BiolpCutoffLevel.Low,
);
const compressed = compress_signal(signal, options); // Uint8Array
const recovered = decompress_signal(compressed); // Float32Array
console.info("Recovered signal", recovered);
```
----
This project is licensed under either of
- BSD-3-Clause License (see [LICENSE](LICENSE.md))
- Apache License, Version 2.0 (see [LICENSE](LICENSE-APACHE.md))
at your option.