My intention of using Orfeo Toolbox is to find all the open air basketball courts on a raster image with 3 bands RGB.
Does OTB require a multi spectral band image or is 3 band image good enough to perform auto object identification.
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Generally speaking, there is no specific requirement in Orfeo Toolbox about the input image format and you'll be able to process any type of multi-spectral image from 3 band RGB raster to hyperspectral images with hundreds bands.