Anthony Winstanley

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This paper discusses the problem of scale in current approaches to Object Based Image Analysis (OBIA), and proposes how it may be overcome using theories of texture. It is obvious that aerial images contain land-cover that is textured and thus any features used to derive a land-cover classification must model texture information and as well as intensity.(More)
For the watershed segmentation algorithm to be successful it must be implemented on a realistic gradient image. In most watershed implementations, gradients are extracted using an operator optimal for ideal step edges. However, image edges are never ideal steps and more closely resemble ramp edges at multiple scales. Therefore this strategy results in an(More)
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