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Changed description of "mean" to "median" (Part 3.2), reflecting the code. #4

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Changed description of "mean" to "median" (Part 3.2), reflecting the code. #4

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2 changes: 1 addition & 1 deletion doc/instructions.md
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Expand Up @@ -434,7 +434,7 @@ colormap gray ;

### Part 3.2: image preprocessing

Before we attempt to train the CNN, the image is pre-processed to remove its mean value. It is also smoothed by applying a Gaussian kernel of standard deviation 3 pixels:
Before we attempt to train the CNN, the image is pre-processed to remove its median value. It is also smoothed by applying a Gaussian kernel of standard deviation 3 pixels:
```matlab
% Pre-smooth the image
im = vl_imsmooth(im,3) ;
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