QYOLO: Lightweight Object Detection via Quantum Inspired Shared Channel Mixing

• URL: http://arxiv.org/abs/2604.26435v1
• Date: Wed, 29 Apr 2026 08:47:27 GMT
• Title: QYOLO: Lightweight Object Detection via Quantum Inspired Shared Channel Mixing
• Abstract summary: This work introduces QYOLO, a quantum-inspired channel mixing framework that achieves genuine architectural compression.<n>The proposed block performs global channel recalibration through a sinusoidal mixing mechanism with shared learnable parameters.<n>QYOLOv8s achieves 21.8% reduction with 0.1 pp degradation, and full accuracy parity is recovered at no cost to compression.
• Score: 2.571702746660217
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: The rapid advancement of object detection architectures has positioned single stage detectors as the dominant solution for real-time visual perception. A primary source of computational overhead in these models lies in the deep backbone stages, where C2f bottleneck modules at high stride levels accumulate a disproportionate share of parameters due to quadratic scaling with channel width. This work introduces QYOLO, a quantum-inspired channel mixing framework that achieves genuine architectural compression by replacing the two deepest backbone C2f modules at P4/16 (512 channels) and P5/32 (1024 channels) with a compact QMixBlock. The proposed block performs global channel recalibration through a sinusoidal mixing mechanism with shared learnable parameters across both backbone stages, enforcing consistent channel importance without requiring independent per-stage parameter sets. The neck and detection head remain fully classical and unchanged. Evaluation on the VisDrone2019 benchmark demonstrates that QYOLOv8n achieves a 20.2% reduction in parameter count (3.01M to 2.40M) and 12.3% GFLOPs reduction with only 0.4 pp mAP@50 degradation. QYOLOv8s achieves 21.8% reduction with 0.1 pp degradation. When combined with knowledge distillation, full accuracy parity is recovered at no cost to compression. An expanded backbone plus neck variant achieved 38 to 41% reduction at the cost of greater accuracy degradation, motivating the backbone-only final design.

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