alleryStart learning →AlexNet's second form of data augmentation is
APCA-based intensity perturbation of the RGB channels
BCutout masking of square patches in each image
CMixup-style linear blending of pairs of images
DRandom elastic deformation of foreground objects
Answer & Solution
Correct answer: A. PCA-based intensity perturbation of the RGB channels
PCA is performed over the RGB pixel distribution
small random multiples of the principal components (weighted by their eigenvalues) are added to each image.
Captures invariance to illumination intensity and colour.
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