Wakayama University · Faculty of Systems Engineering · 助教

Research keywords組合せ最適化・GPGPU・オペレーションズ・リサーチ・充足可能性問題

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• TinyStereo: A Tiny Coarse-to-Fine Framework for Vision-Based Depth Estimation on Embedded GPUs2024 · Qiong Chang, Xin Xu, Aolong Zha, Meng Joo Er, Yongqing Sun, Yun Li
• An Optimized GPU Implementation for GIST Descriptor2024 · GIST descriptor is a classic feature descriptor primarily used for scene categorization and recognition tasks. It drives a bank of Gabor filters, which respond to edges and textures at various scales and orientations to capture the spatial structures in an image. Compared to other scene recognition algorithms that rely on detailed object detection, GIST has lower computational complexity, allowing it to be widely applied. However, its internal multi-scale and multi-orientation Gabor filters also mean that systems based on it cannot be executed fast enough. This paper proposed an optimized GPU kernel for the GIST descriptor. It fully takes advantage of the symmetry of Gabor filters and proposes different optimization strategies for both oblique and orthogonal orientations. Extensive experiments demonstrate that the proposed kernel is adaptable to images of various scales and different GPUs. Compared to the cuFFT library, our kernel achieves 12.09x and 3.86x acceleration on an RTX 3080 GPU and a Jetson AGX Xavier GPU, respectively.
• A Case Study of the Profit-Maximizing Multi-Vehicle Pickup and Delivery Selection Problem for the Road Networks with the Integratable Nodes.2023 · Aolong Zha, Qiong Chang, Naoto Imura, Katsuhiro Nishinari (担当区分： 筆頭著者 )
• An incremental SAT-based approach for solving the real-time taxi-sharing service problem2022 · Aolong Zha, Qiong Chang, Itsuki Noda (担当区分： 筆頭著者 )

• 推論・学習機能を備えた実験候補推薦システムの研究開発
• 利益最大化型多車両集配選択問題のMaxSAT・SMTによる高性能解法と物流ネットワークへの応用

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