Incorporating Side Information by Adaptive Convolution – Supplementary Material

Camera extrinsic parameters, such as camera tilt angle and camera height, are useful types of side information for crowd counting. The camera tilt angle affects a person’s appearance, while the distance affects the scale. Note that the camera tilt angle/height can be used to estimate the perspective map, whose values indicate the size of a person appearing at each location. As existing datasets do not contain the side information of extrinsic camera parameters, here we collect a new dataset consisting of indoor/outdoor scenes from various camera angles and heights. The scenes were captured using a smartphone camera, which was placed on a tripod to keep it stable. The camera tilt angle was recorded using the accelerometer tilt-sensor of the smartphone, and the height of the camera to the ground-plane was measured using a laser range finder. The perspective map for each scene is estimated from the camera extrinsic parameters.