Martín Abadi, Ashish Agarwal, Paul Barham, Eugene Brevdo, Zhifeng Chen, Craig Citro, Greg S. Corrado, Andy Davis, Jeffrey Dean, Matthieu Devin, Sanjay Ghemawat, Ian Goodfellow, Andrew Harp, Geoffrey Irving, Michael Isard, Yangqing Jia, Rafal Jozefowicz, Lukasz Kaiser, Manjunath Kudlur, Josh Levenberg, Dan Mané, Rajat Monga, Sherry Moore, Derek Murray, Chris Olah, Mike Schuster, Jonathon Shlens, Benoit Steiner, Ilya Sutskever, Kunal Talwar, Paul Tucker, Vincent Vanhoucke, Vijay Vasudevan, Fernanda Viégas, Oriol Vinyals, Pete Warden, Martin Wattenberg, Martin Wicke, Yuan Yu, and Xiaoqiang Zheng. TensorFlow: Large-scale machine learning on heterogeneous systems, 2015. URL https://www.tensorflow.org/. Software available from tensorflow.org.
 Md Amirul Islam, Mrigank Rochan, Neil D. B. Bruce, and Yang Wang. Gated feedback refinement network for dense image labeling. In CVPR, July 2017. [OpenAIRE]
 C. Arteta, V. Lempitsky, J. A. Noble, and A. Zisserman. Interactive object counting. In ECCV, 2014. [OpenAIRE]
 Deepak Babu Sam, Shiv Surya, and R. Venkatesh Babu. Switching convolutional neural network for crowd counting. In CVPR, July 2017. [OpenAIRE]
 Sean Bell, C. Lawrence Zitnick, Kavita Bala, and Ross Girshick. Inside-outside net: Detecting objects in context with skip pooling and recurrent neural networks. In The IEEE Conference on Computer Vision and Pattern Recognition (CVPR), June 2016. [OpenAIRE]
 A.-B. Chan, Z.-S.-J. Liang, and N. Vasconcelos. Privacy preserving crowd monitoring: Counting people without people models or tracking. In CVPR, 2008.
 Sheng Chen, Alan Fern, and Sinisa Todorovic. Person count localization in videos from noisy foreground and detections. In CVPR, 2015.
 Navneet Dalal and Bill Triggs. Histograms of oriented gradients for human detection. In CVPR, 2005.
 Pedro F. Felzenszwalb, Ross B. Girshick, David McAllester, and Deva Ramanan. Object detection with discriminatively trained part-based models. IEEE Trans. Pattern Anal. Mach. Intell., 2010. [OpenAIRE]
 Luca Fiaschi, Ullrich Köthe, Rahul Nair, and Fred A. Hamprecht. Learning to count with regression forest and structured labels. In ICPR, 2012. [OpenAIRE]
 Felix A. Gers, Jürgen A. Schmidhuber, and Fred A. Cummins. Learning to forget: Continual prediction with lstm. Neural Comput., 12(10):2451-2471, October 2000. [OpenAIRE]
 Ross Girshick, Jeff Donahue, Trevor Darrell, and Jitendra Malik. Rich feature hierarchies for accurate object detection and semantic segmentation. In CVPR, 2014.
 R. Guerrero-Gómez-Olmedo, B. Torre-Jiménez, R. López-Sastre, S. MaldonadoBascón, and D. Oñoro Rubio. Extremely overlapping vehicle counting. In Iberian Conference on Pattern Recognition and Image Analysis (IbPRIA), 2015.
 Bharath Hariharan, Pablo Arbelaez, Ross Girshick, and Jitendra Malik. Hypercolumns for object segmentation and fine-grained localization. In CVPR, June 2015.
 Kaiming He, Xiangyu Zhang, Shaoqing Ren, and Jian Sun. Deep residual learning for image recognition. In CVPR, pages 770-778, 2016.