Detect Source Resolution with Resdet: A Powerful Tool for Image Upscaling Analysis

Github repositories

• 0x09/resdet

  resdet is a utility that detects the source resolution of upscaled images. It relies on resampling methods and the Discrete Cosine Transform to identify the original resolution. The tool can be used as a standalone command-line application or as a library for integration into other projects. It works best on clear and detailed images, while filtering and compression artifacts may affect accuracy. The utility supports image formats like PNG and JPEG, but it does not work with neural network-based resizers. The project was developed to identify scaled duplicates in an image deduplication framework.