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Google put their image recognition software into a feedback loop and produced Deep Dream. Then they
released the code into the wild. At some later time, I want to post a bit about the theory behind
deep learning, especially
convolutional neural networks.
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Anyhow, a good place to find Deep Dream images is
reddit /r/deepdream.
Here's a google blog post describing the software.
From that post here's an image worth 1000 words about Deep Dream:
And, since I'm an artsy-fartsy kind of guy myself, I couldn't help but make a bunch of images with it from photos I've taken.