Program to apply random elastic rubbersheet transforms to Netpbm color (.ppm) images for augmenting training sets in machine learning/deep learning. The program reads an input .ppm image from stdin and writes a ppm image to stdout. Original Author: Marius Bulacu (.pgm version for characters). Adapted for .ppm and color: Lambert Schomaker
Please cite:
M Bulacu, A Brink, T van der Zant, L Schomaker (2009). Recognition of handwritten numerical fields in a large single-writer historical collection, 10th International Conference on Document Analysis and Recognition, pp. 808-812, DOI: 10.1109/ICDAR.2009.8
December 2023 - Added imagemorph.py, thanks to ChatGPT and Jelmer van Lune