arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1507.08445cs.CV
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高密度人群的静态图像统计

People Counting in High Density Crowds from Still Images

Indian Institute of Technology, Kanpur(印度理工学院坎普尔分校)

Ankan Bansal, K. S. Venkatesh

摘要:

我们提出了一种方法,估计在高密度的人群从静止图像的人数。该方法通过融合来自多个源的信息来估计计数。现有的大多数关于人群计数的工作都是针对非常小的人群(几十个人),并使用来自视频的时间信息。我们的方法仅使用静态图像来估计高密度图像(数百到数千个个体)中的计数。在这种规模下,我们不能只依赖一组特征来估计计数。因此,我们使用多个源,即。兴趣点(SIFT),傅立叶分析,小波分解,灰度共生矩阵功能和低置信度的头部检测,估计计数。这些来源中的每一个都给出了计数的单独估计以及置信度和其他统计测量,然后将其组合以获得最终估计。我们测试我们的方法在现有的数据集上的50张图像,其中包含超过64000个人。此外,我们还添加了另外50张带注释的人群图像,并在包含87000多人的100张图像的完整数据集上进行了测试。每个图像的计数范围为81至4633。我们报告的性能方面的平均绝对误差,这是一个衡量的准确性的方法,和平均归一化的绝对误差,这是一个衡量的鲁棒性。

英文摘要:

We present a method of estimating the number of people in high density crowds from still images. The method estimates counts by fusing information from multiple sources. Most of the existing work on crowd counting deals with very small crowds (tens of individuals) and use temporal information from videos. Our method uses only still images to estimate the counts in high density images (hundreds to thousands of individuals). At this scale, we cannot rely on only one set of features for count estimation. We, therefore, use multiple sources, viz. interest points (SIFT), Fourier analysis, wavelet decomposition, GLCM features and low confidence head detections, to estimate the counts. Each of these sources gives a separate estimate of the count along with confidences and other statistical measures which are then combined to obtain the final estimate. We test our method on an existing dataset of fifty images containing over 64000 individuals. Further, we added another fifty annotated images of crowds and tested on the complete dataset of hundred images containing over 87000 individuals. The counts per image range from 81 to 4633. We report the performance in terms of mean absolute error, which is a measure of accuracy of the method, and mean normalised absolute error, which is a measure of the robustness.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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