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this is mostly a problem with your database. possible reasons:

• images too large.
• bad cropping (too much background)
• bad alignment (not centered, not straight forward)
• missing lighting normalization
• different processing for training & prediction

setting up the code is easy, tweaking your data to get a good performance is hard here !

this is mostly a problem with your database. data. possible reasons:

• not enough images per person (20+ needed)
• images too large.
• bad cropping (too much background)
• bad alignment (not centered, not straight forward)
• missing lighting normalization
• different processing for training & prediction

setting up the code is easy, tweaking your data to get a good performance is hard here !

this is mostly a problem with your data. possible reasons:

• not enough images per person (20+ needed)
• images too large.large or too small (try 100x100 or such)
• bad cropping (too much background)
• bad alignment (not centered, not straight forward)
• missing lighting normalization
• different processing for training & prediction

setting up the code is easy, tweaking your data to get a good performance is hard here !