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    Author(s): B. Cooke; A. Saucier
    Date: 1995
    Source: Res. Note SO-380. New Orleans, LA: U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station. 5 p.
    Publication Series: Research Note (RN)
    Station: Southern Forest Experiment Station
    PDF: View PDF  (417 KB)

    Description

    Scientists with the USDA Forest Service are currently assessing the usefulness of aerial video imagery for various purposes including midcycle inventory updates. The potential of video image data for these purposes may be compromised by scan line interleaving displacement problems. Interleaving displacement problems cause features in video raster datasets to have jagged edges due to pixel offset on adjacent scan lines. Researchers at the Southern Forest Experiment Station, Forest Inventory and Analysis Unit (SO-FIA), have developed a computer program, "Pixshift," written in C, that shifts alternate raster lines (even or odd) to the right or left by a user-specified integer value.The program allows a maximum of four channels to be shifted simultaneously. Improvements in band-to-band registration and rectification to a map base have been observed, and classification improvements are expected.

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    Citation

    Cooke, B.; Saucier, A. 1995. Correction of Line Interleaving Displacement in Frame Captured Aerial Video Imagery. Res. Note SO-380. New Orleans, LA: U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station. 5 p.

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