Effacer les filtres
Effacer les filtres

HOG feature extraction cell size

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Elf
Elf le 13 Déc 2017
Réponse apportée : Amy le 21 Déc 2017
Hi
I use hog feature extraction in images to detect the horizon line. Default cell size for hog feature extraction is 8x8. When I use 16x16 I get better result of the accuracy of identifying horizon line. But in some images 8x8 is working better. However in general 16x16 is more successful. I didn't understand why 8x8 is working better in some images while 16x16 is more successful in general? What is the effectiveness of cell size in hog feature extraction?
Thank you

Réponses (1)

Amy
Amy le 21 Déc 2017
From the documentation for extractHOGFeatures: To capture large-scale spatial information, increase the cell size. When you increase the cell size, you may lose small-scale detail
There is not one optimal cell size. The best size depends on your data.

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