Accumulated water depth estimation method and system based on monitoring camera

The invention discloses an accumulated water depth estimation method and system based on a monitoring camera, and the method comprises the steps: obtaining an image shot by the monitoring camera, and the monitoring camera is disposed on an urban road; after it is judged that water is accumulated on the road in the image from the image, a comparison object in the picture is obtained, and the comparison object comprises a vehicle and/or a pedestrian; identifying the part of the comparison object in the water in the image, and determining the proportion of the part of the comparison object in the water to the total height of the comparison object; and determining a depth range of the accumulated water on the road according to the proportion and a pre-configured height range of the comparison object. According to the method and the device, the problem caused by the fact that the ponding depth is marked by means of a ponding depth gauge in the prior art is solved, so that the ponding detection breadth is improved,