What image format is best use for facial recognition?

asked 2016-05-18 22:09:54 -0600

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What format is best use for facial recognition e.g. png, jpg, pgm ot another? i use opnecv methods LBPHFaceRecognizer, FisherFaceRecognizer and EigenFaceRecognizer.

answered 2016-05-18 23:41:03 -0600

tuannhtn

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They are the same. As a facial recognition method uses intensity values read from images for performing the recognition process, the format does not affect the results. But the format will affect when saving images from acquisition devices, the quality of the pictures may reduce if you use compressed format such as jpg.

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@tuannhtn, thanks for reply. What about optimal image resolution for recognition? I should use the highest resolution or are there any restrictions?

arcticworker ( 2016-05-19 09:01:59 -0600 )edit

I think the resolution should depend on the method you use but generally (from the literature and my experience) the 128x128 resolution is sufficient.

tuannhtn ( 2016-05-20 02:24:05 -0600 )edit

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