Information processing system

An information processing system according to an embodiment of the present invention comprises: a detection unit which is mounted on a toilet bowl in which a bowl section for receiving excrement is formed, and which has a sensor in which a plurality of elements are arranged in a straight line in order to detect dropped excrement; a stool image acquisition unit that acquires a stool image based on information acquired in time series by the detection unit; and a determination unit that determines the amount of the excrement from the excrement image, the determination unit determining the amount of the excrement on the basis of the length of the excrement in the falling direction in the excrement image and the property of the excrement. 实施方式所涉及的信息处理系统具有：检测部，其载置于形成有用于承接排泄物的盆部的便器，具有为了检测掉落中的便而直线状地配置有多个元件的传感器；便图像获取部，其获取基于由所述检测部按时间序列获取的信息而成的便图像；以及判定部，其根据所述便图像来判定便的量，所述判定部基于所述便图像中的便的掉落方向上的长度和便的性状来判定便的量。