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Groups > sci.image.processing > #4886

downsampling by a fraction

Newsgroups sci.image.processing
Date 2023-07-14 09:05 -0700
Message-ID <2fa6406c-3e55-4a48-908d-97f22fdf4007n@googlegroups.com> (permalink)
Subject downsampling by a fraction
From Mike Sousa <mike_sousa@yahoo.com>

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Hi

I need to downsample an image (bitmap image of a Spectrogram) by a fraction, N/D, (rational: ex 4/5).  I understand that this can be done with resampling by 4 followed by decimation by 5. If this is true, is there a more efficient way in this case, more efficient == computationally faster)?
Thanks...

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downsampling by a fraction Mike Sousa <mike_sousa@yahoo.com> - 2023-07-14 09:05 -0700

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