Application of image processing to evidence for the persistence of the Ivory-billed Woodpecker (Campephilus principalis)

Author:

Collins Michael D.

Abstract

AbstractImage processing is used to enhance apparent field marks in video footage that was obtained during three encounters with birds that were identified in the field as Ivory-billed Woodpeckers (Campephilus principalis). Previous analysis of the videos was based on characteristics that are resolved in the raw footage, such as flight path, wing motion, flap rate, behaviors, field marks, and body proportions. Adjusting parameters such as brightness, contrast, and color reveals features consistent with the left dorsal stripe, black leading edges on the dorsal surfaces of the wings, and a red crest that would be consistent with a male of the species. It may be possible to extract additional features from other parts of the videos by applying more advanced processing that allows greater control and analysis of the parameters.

Publisher

Springer Science and Business Media LLC

Subject

Multidisciplinary

Reference21 articles.

1. Allen, A. A. & Kellogg, P. P. Recent observations on the Ivory-billed Woodpecker. Auk 54, 164–184 (1937).

2. Tanner, J. T. The Ivory-billed Woodpecker (National Audubon Society, New York, 1942).

3. Jackson, J. J. In Search of the Ivory-billed Woodpecker (Smithsonian, Washington, 2004).

4. Hill, G. E. Ivorybill Hunters: The Search for Proof in a Flooded Wilderness (Oxford University Press, Oxford, 2007).

5. Eastman, W. Ten year search for the Ivory-billed Woodpecker. Atl. Nat. 13 (1958).

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