41–43 of 43 posts
Actually when you really need to decode a blurred or mosaiced image you can do even more tricks. Especially when they are screenshots. Since you can take a pattern (digits) and blur them with all possible options of certain most popular image editing software, you can then do massive number of comparisons to see what comes out right. It's massively cpu intensive, but I am sure people that need it can do it. Blacking…
You don't even have to color over, or blur, or do any of that hard stuff. Just select the region, and press "CTRL-X", save and quit. No reason to do it any other way.
People blur to maintain the general look of the original image. Having black boxes everywhere is jarring. Honestly, I don't think the lesson has to be "don't blur"... it can just be "blur enough". If I blur something out, I just use a radius big enough to erase all of the information.
Check out "High Quality Motion Deblurring from a Single Image", for some quite impressive photo reconstruction done by actually fitting a spatially varying set of blur kernels to an image.
Earlier quoted context omitted.
People blur to maintain the general look of the original image. Having black boxes everywhere is jarring. Honestly, I don't think the lesson has to be "don't blur"... it can just be "blur enough". If I blur something out, I just use a radius big enough to erase all of the information.
Deconvolution is quick with Fourier transforms. In infinite precision, convolution by any nonzero function (which includes Gaussian blurs) is invertible. In practice, quantization and stopping the convolution at the edge of the blur region complicates things. The blur itself removes no information, if you want to convince yourself it's safe you need to argue numerical analysis. Check out "High Quality Motion Deblurri…
I eagerly await your impending purchases.