HaGRID手势识别数据集详解与下载指南

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HaGRID手势识别数据集是一个专门用于研究和开发手势识别技术的大型数据集,它的重要性在于为机器学习和计算机视觉领域的研究者们提供了丰富的训练和测试材料。该数据集由高清RGB图像组成,分辨率为1920×1080像素,总共有552,992张图像,涵盖了18个不同的手势类别。每个类别大约包含7000张图片,总计123,731张(接近12万张),这对于深度学习模型如卷积神经网络(CNN)在手势识别任务中的训练非常有价值。 数据集的特点在于其规模庞大且精细标注,不仅有每张图像的分类标签,还提供了JSON和XML两种常见的标注格式。JSON标注便于与现代深度学习框架兼容,而XML格式则对应于常用的Visual Object Classes (VOC)数据集标准,方便进行目标检测任务的训练。特别是对于那些包含第二只手的图像,HaGRID数据集还包含了单独的"no_gesture"类别,这有助于模型理解背景和非手势场景。 数据集的划分十分合理,92%的图像被用作训练集,8%作为测试集,这种划分有助于评估模型的泛化能力。训练集包含509,323张图片,测试集则有43,669张,这种分配有助于研究人员在实际应用中验证模型的性能。 此外,为了提高模型对特定手势区域的关注度,HaGRID数据集还提供了每个手势区域的裁剪图片,这些图片被保存在Classification文件夹下,便于进行更精确的手势定位和识别任务。无论是用于手势目标检测还是手势分类的任务,这个数据集都能为研究者提供一个强大的基础。 HaGRID手势识别数据集是一个理想的资源,对于想要开发智能手势识别系统的研究人员、工程师和学生来说,它是必不可少的训练素材。通过使用这个数据集,开发者可以训练出准确、高效的手势识别算法,从而推动人机交互、智能家居、虚拟现实等领域的技术进步。
2023-06-06 上传

1444. Elephpotamus Time limit: 0.5 second Memory limit: 64 MB Harry Potter is taking an examination in Care for Magical Creatures. His task is to feed a dwarf elephpotamus. Harry remembers that elephpotamuses are very straightforward and imperturbable. In fact, they are so straightforward that always move along a straight line and they are so imperturbable that only move when attracted by something really tasty. In addition, if an elephpotamus stumbles into a chain of its own footprints, it falls into a stupor and refuses to go anywhere. According to Hagrid, elephpotamuses usually get back home moving along their footprints. This is why they never cross them, otherwise they may get lost. When an elephpotamus sees its footprints, it tries to remember in detail all its movements since leaving home (this is also the reason why they move along straight lines only, this way it is easier to memorize). Basing on this information, the animal calculates in which direction its burrow is situated, then turns and goes straight to it. It takes some (rather large) time for an elephpotamus to perform these calculations. And what some ignoramuses recognize as a stupor is in fact a demonstration of outstanding calculating abilities of this wonderful, though a bit slow-witted creature. Elephpotamuses' favorite dainty is elephant pumpkins, and some of such pumpkins grow on the lawn where Harry is to take his exam. At the start of the exam, Hagrid will drag the elephpotamus to one of the pumpkins. Having fed the animal with a pumpkin, Harry can direct it to any of the remaining pumpkins. In order to pass the exam, Harry must lead the elephpotamus so that it eats as many pumpkins as possible before it comes across its footprints. Input The first input line contains the number of pumpkins on the lawn N (3 ≤ N ≤ 30000). The pumpkins are numbered from 1 to N, the number one being assigned to the pumpkin to which the animal is brought at the start of the trial. In the next N lines, the coordinates of the pumpkins are given in the order corresponding to their numbers. All the coordinates are integers in the range from −1000 to 1000. It is guaranteed that there are no two pumpkins at the same location and there is no straight line passing through all the pumpkins. Output In the first line write the maximal number K of pumpkins that can be fed to the elephpotamus. In the next K lines, output the order in which the animal will eat them, giving one number in a line. The first number in this sequence must always be 1.写一段Java完成此目的

2023-06-03 上传