Abstract: The present invention relates to a method of determining the risk to an item posed by vegetation, the method comprising: receiving passive high altitude data, such as satellite imagery, relating to vegetation around the item; determining at least one vegetation feature based on said data; determining a risk posed to the item based on said at least one vegetation feature; and outputting said risk to a user. The invention also relates to a corresponding system and computer program product.
Abstract: A method of categorising vegetation is disclosed, the method comprising: inputting and storing in a memory information related to a ground observation; determining the identity of the vegetation of said observations corresponding to an existing memory entry; determining a characteristic for said vegetation in dependence on said ground observation; and updating said memory with said characteristic.