By utilizing only depth information, the paper introduces a novel but efficient local planning approach that enhances not only computational efficiency but also planning performances for memoryless local planners. The sampling is first proposed to be based on the depth data which can identify and eliminate a specific type of in-collision trajectories in the sampled motion primitive library. More specifically, all the obscured primitives' endpoints are found through querying the depth values and excluded from the sampled set, which can significantly reduce the computational workload required in collision checking. On the other hand, we furthermore propose a steering mechanism also based on the depth information to effectively prevent an autonomous vehicle from getting stuck when facing a large convex obstacle, providing a higher level of autonomy for a planning system. Our steering technique is theoretically proved to be complete in scenarios of convex obstacles. To evaluate effectiveness of the proposed DEpth based both Sampling and Steering (DESS) methods, we implemented them in the synthetic environments where a quadrotor was simulated flying through a cluttered region with multiple size-different obstacles. The obtained results demonstrate that the proposed approach can considerably decrease computing time in local planners, where more trajectories can be evaluated while the best path with much lower cost can be found. More importantly, the success rates calculated by the fact that the robot successfully navigated to the destinations in different testing scenarios are always higher than 99.6% on average.

小麦是全球主要的主食之一。因此，必须衡量，维护和改善人类消费的小麦质量。传统的小麦质量测量方法主要具有侵入性，破坏性，并且仅限于小麦样本。在典型的小麦供应链中，有许多接收点，散装小麦到来，根据要求将其存储和转发。在此接受点，传统质量测量方法的应用非常困难，而且通常非常昂贵。因此，需要非侵入性，无损的实时方法来进行小麦质量评估。满足上述标准的一种这样的方法是用于食品质量测量的高光谱成像（HSI），也可以应用于批量样品。在本文中，我们研究了如何在文献中使用HSI来评估储存的小麦质量。因此，可以在单个紧凑的文档中提供所需的信息，以在澳大利亚供应链的不同阶段实施实时数字质量评估方法。

具有基于块体系结构的运动建模已被广泛用于视频编码中，其中框架分为固定尺寸的块，这些块是独立补偿的。这通常会导致编码效率低下，因为固定尺寸的块几乎与对象边界不符。尽管已经引入了层次结构分区来解决这一问题，但运动矢量的增加限制了收益。最近，与立方体分配的图像的近似分割已经普及。可变大小的矩形片段（立方体）不仅容易适应基于块的图像/视频编码技术，而且还可以很好地与对象边界保持一致。这是因为立方分区基于同质性约束，从而最大程度地减少了平方误差的总和（SSE）。在本文中，我们研究了针对可扩展视频编码中使用的固定尺寸块的运动模型的潜力。具体而言，我们使用图片组（GOP）中的锚框的立方分区信息构建了运动补偿帧。然后，预测的当前帧已用作基础层，同时使用可扩展的HEVC编码器编码当前帧作为增强层。实验结果确认4K视频序列上节省了6.71％-10.90％的比特率。

In a rapidly flourishing country like Bangladesh, accidents in unmanned level crossings are increasing daily. This study presents a deep learning-based approach for automating level crossing junctions, ensuring maximum safety. Here, we develop a fully automated technique using computer vision on a microcontroller that will reduce and eliminate level-crossing deaths and accidents. A Raspberry Pi microcontroller detects impending trains using computer vision on live video, and the intersection is closed until the incoming train passes unimpeded. Live video activity recognition and object detection algorithms scan the junction 24/7. Self-regulating microcontrollers control the entire process. When persistent unauthorized activity is identified, authorities, such as police and fire brigade, are notified via automated messages and notifications. The microcontroller evaluates live rail-track data, and arrival and departure times to anticipate ETAs, train position, velocity, and track problems to avoid head-on collisions. This proposed scheme reduces level crossing accidents and fatalities at a lower cost than current market solutions. Index Terms: Deep Learning, Microcontroller, Object Detection, Railway Crossing, Raspberry Pi

为了利用同一场景的视频框架中的高时间相关性，使用基于块的运动估计和补偿技术从已经编码的参考帧中预测了当前帧。尽管这种方法可以有效利用移动对象的翻译运动，但它容易受到其他类型的仿射运动和对象遮挡/除含量的影响。最近，深度学习已被用来模拟人类姿势的高级结构，以从短视频中的特定动作中进行，然后通过使用生成的对抗网络（GAN）来预测姿势，从而在未来的时间内生成虚拟框架。因此，建模人姿势的高级结构能够通过预测人类的行为并确定其轨迹来利用语义相关性。视频监视应用程序将受益，因为可以通过估算人类姿势轨迹并通过语义相关性产生未来的框架来压缩存储的大监视数据。本文通过从已经编码的框架中对人姿势进行建模并在当前时间使用生成的框架来探讨一种新的视频编码方式。预计所提出的方法可以通过预测包含具有较低残差的移动对象的块来克服传统向后引用框架的局限性。实验结果表明，提出的方法平均可以实现高达2.83 dB PSNR增益和25.93 \％比特率的节省，用于高运动视频序列