1. A method of processing image data comprising: segmenting the image data using a first criterion and a first parameter to create a first segmented view of the image data, segmenting the image data using the first criterion or a second criterion and a second parameter to create a second segmented view of the image data, displaying the first segmented view of the image data, receiving one or more selection user inputs selecting one or more segments of the image data, as displayed in the first segmented view, displaying the second segmented view of the image data, and receiving one or more further selection user inputs selecting one or more segments of the image data, as displayed in the second segmented view.