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Visual Computing for Industry, Biomedicine, and Art
Fig. 2 | Visual Computing for Industry, Biomedicine, and Art

Fig. 2

From: Indoor versus outdoor scene recognition for navigation of a micro aerial vehicle using spatial color gist wavelet descriptors

Fig. 2

Illustration of visual descriptors. a Scale-invariant feature transform key points detected in an outdoor image; b Speeded up robust features key points detected in an indoor image; c Histogram of oriented gradients features detected in an outdoor image; d Input indoor image; e Horizontal directional morphological gradient; f Vertical directional morphological gradient; g GIST descriptor

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