今回は高速省メモリな画像処理ライブラリである libvips を使ってみます。 libvips is a demand-driven, horizontally threaded image processing library. Compared to similar libraries, libvips runs quickly and uses little memory. It has around 300 operations covering arithmetic, histograms, convolution, morphological operations, frequency filtering, colour, resampling, statistics and others. – libvips: A fast image processing library