2026 Multiresolution Adaptive Block-Coordinate Forward-Backward for Image Reconstruction Edgar Desainte-Maréville, Marion Foare, Paulo Gonçalves, and 2 more authors EUSIPCO, 2026 PDF Code 2025 A multilevel approach to accelerate the training of Transformers Guillaume Lauga, Maël Chaumette, Edgar Desainte-Maréville, and 2 more authors GRETSI, 2025 PDF