4 ms·

So it would seem we should use a 0.5x + 0.5y blur to be sure to lose information - something that makes the matrix close to singular. Also, how to handle the

So it would seem we should use a 0.5x + 0.5y blur to be sure to lose information - something that makes the matrix close to singular. Also, how to handle the boundaries? We select a box in the image and blur that; we'd want to handle the boundaries in a way that also makes sure we lose information.

MauranKilom 6y ago
Yes, you could set each pixel in the blurred region to the same color (i.e. each matrix entry is identical) - that could be black or the average of the blurred region. "Pixelation" does the same but in smaller boxes.