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Merge remote-tracking branch 'upstream/3.4' into merge-3.4

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Alexander Alekhin
2020-11-17 21:56:26 +00:00
parent 9acbfc6e05 301c078d19
commit ce8027c6fb
39 changed files with 554 additions and 170 deletions
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doc/tutorials/videoio/video-input-psnr-ssim/video_input_psnr_ssim.markdown
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@@ -131,7 +131,7 @@ For properties you can read and change look into the documentation of the @ref c
We want to check just how imperceptible our video converting operation went, therefore we need a
system to check frame by frame the similarity or differences. The most common algorithm used for
this is the PSNR (aka **Peak signal-to-noise ratio**). The simplest definition of this starts out
from the *mean squad error*. Let there be two images: I1 and I2; with a two dimensional size i and
from the *mean squared error*. Let there be two images: I1 and I2; with a two dimensional size i and
j, composed of c number of channels.
\f[MSE = \frac{1}{c*i*j} \sum{(I_1-I_2)^2}\f]