arXiv Computer Vision By Thanh-Dung Le, Vu Nguyen Ha, Ti Ti Nguyen, Symeon Chatzinotas

LIMODENet: Attention-Free Compact Encoders for Information-Preserving Onboard Satellite Image Restoration

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arXiv Computer Vision
Oct 21

Efficient One-Step Diffusion Restoration Model with Compact Token Compression and Linear Attention

The paper introduces SANA‑SR, an efficient one‑step diffusion restoration framework for real‑world image super‑resolution. It uses a deep compression autoencoder to reduce latent tokens by a 32× ratio, preserving essential structures and textures, and applies a linear‑attention DiT with LoRA fine‑tuning for linear‑complexity token mixing. Experiments show competitive or superior performance on benchmark datasets, and the pruned model runs in 0.019 s with 407.95 G MACs and 344 M parameters, indicating strong potential for mobile deployment.

By Bingtian Qiao, Yue Shi, Yingjie Zhou, Yong Guo, Guangtao Zhai, Jiezhang Cao
arXiv Machine Learning
Oct 19

Replay Pruning and Few-Bit Integer Inference for Hardware-Efficient Speed-Sign Recognition

The paper presents a two‑stage speed‑limit sign recognizer for automotive SoCs that compresses a YOLO‑family detector via channel replay pruning and implements a lightweight five‑layer CNN reader using 4‑bit weights and 8‑bit activations. Replay pruning removes over 60% of parameters while matching parent accuracy, outperforming other pruning methods on YOLOv5n and YOLOv8n. The resulting system, with 0.72 M parameters, achieves 95.2% recognition accuracy at 94 fps on a Jetson AGX Orin, fitting within tight memory, arithmetic, and energy budgets.

By Se Un Park, Kyungkeon Chung, Huigeol Kim, Junyoung Park
arXiv AI
Oct 9

Rethinking Contrastive Loss in CLIP Post-training: A Complementary Framework with Frozen Text Encoder

The paper revisits the use of contrastive loss for post‑training CLIP models, showing that the reported catastrophic forgetting is mainly due to an overly large temperature parameter in the InfoNCE objective. By setting a smaller temperature, contrastive post‑training can actually improve CLIP. The authors introduce ComCLIP, a lightweight single‑epoch recipe that freezes the text encoder, trains the vision encoder with a properly tempered contrastive loss, an MSE anchoring loss, and a relational distillation loss, achieving comparable zero‑shot classification to CLIP‑Refine while significantly enhancing visual feature transferability and maintaining downstream compatibility with LLaVA.

By Zidan Wang, Yaqian Li, Xiaokai Zhang, Kaiwen Long, Kun He, Hanpeng Liu