scanner_core library

Direct access to the native CV core that powers flutter_better_scanner.

This is the library that used to be the separate scanner_core package. It is re-exported here unchanged, so code that previously did

import 'package:scanner_core/scanner_core.dart';

keeps working after a one-line change:

import 'package:flutter_better_scanner/scanner_core.dart';

Everything here is synchronous and CPU-bound — call it from a worker isolate for large images. Most apps never need this library: the scanner, the controller and ScannerEditor already run it on a background isolate.

final rgba = RgbaImage(pixels, width, height);
final quad = ScannerCv.detectDocument(rgba);
final flat = quad == null
    ? rgba
    : ScannerCv.warp(rgba, quad.scale(rgba.width - 1, rgba.height - 1));
final bytes = ScannerCv.encodeJpeg(
    ScannerCv.applyFilter(flat, ScanFilter.magicColor), 92);