phomo vs Pro Photo Mosaic Creator

phomo is a free tool that creates photographic mosaics by arranging tile images to recreate a master image. It compares color distributions between tiles and regions of the master, then assigns tiles using a linear sum assignment algorithm. The project can be installed with pip as a Python package or run through its `phomo` command, which accepts a master image and a directory of tile images. Command-line options include cropping and resizing the master and tiles, black-and-white conversion, grid display, and control over how often tiles appear. Matching choices include greyscale, norm, and luv_approx distance metrics, color equalization, and color-distribution matching. A greedy assignment mode is described as improving performance while reducing accuracy. CUDA acceleration is available through an extra, requiring a CUDA-compatible GPU and toolkit. The package requires Python >=3.9 and <3.13, runs on Linux, macOS, and Windows, and lists PNG as its output format. It is published under the MIT License.

Pro Photo Mosaic Creator has no write-up on Specifiction yet; its figures are above.