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[1901.07821] Rethinking Lossy Compression: The Rate-Distortion-Perception Tradeoff
"Lossy compression algorithms are typically designed and analyzed through the lens of Shannon's rate-distortion theory, where the goal is to achieve the lowest possible distortion (e.g., low MSE or high SSIM) at any given bit rate. However, in recent years, it has become increasingly accepted that "low distortion" is not a synonym for "high perceptual quality", and in fact optimization of one often comes at the expense of the other. In light of this understanding, it is natural to seek for a generalization of rate-distortion theory which takes perceptual quality into account. In this paper, we adopt the mathematical definition of perceptual quality recently proposed by Blau & Michaeli (2018), and use it to study the three-way tradeoff between rate, distortion, and perception. We show that restricting the perceptual quality to be high, generally leads to an elevation of the rate-distortion curve, thus necessitating a sacrifice in either rate or distortion. We prove several fundamental properties of this triple-tradeoff, calculate it in closed form for a Bernoulli source, and illustrate it visually on a toy MNIST example."

--- Why not just make perceptual quality the distortion measure?
to:NB  information_theory  perception 
17 days ago by cshalizi

"Fast Software, the Best Software", an interesting read on performance, speed and how per…
Performance  Perception  from twitter_favs
17 days ago by oliver.turner
GitHub - kylemath/cross_colour: Overlay saturated crosshatch grid onto grayscale image for illusory colours
Overlay saturated crosshatch grid onto grayscale image for illusory colours - kylemath/cross_colour
matlab  colors  perception  source.code 
18 days ago by po
Dr. Joe Dispenza: Heal The Body and Transform the Mind by Lewis Howes | Free Listening on SoundCloud
Dr. Joe Dispenza: Heal The Body and Transform the Mind -- GO FROM THINKING TO DOING TO BEING. Your emotions create your reality. You can either be held back by the feelings of your past, or you can create the feelings of your future. Every thought you have affects every atom.
emotion  future  perception 
26 days ago by tylersuzukinelson
Apple, Google, and Facebook Are Raiding Animal Research Labs - Hyperdrive - Bloomberg
Neuroscientists studying birds, mice, and fish are landing seven-figure salaries to help advance artificial intelligence, self-driving cars, and more.
animals  behavior  ethology  brain  neuralnets  deeplearning  fish  bird  mice  ai  research  academic  perception 
27 days ago by cwr
Altered States of Consciousness: The Neuropsychology of How Time Perception Modulates Our Experience of Self, from Depression to Boredom to Creative Flow – Brain Pickings
Nearly a century after Woolf and many turns of the cultural wheel after Whitman, the German psychologist and chronobiologist Marc Wittmann — a pioneer in the research on time perception — takes up these enormous, elemental questions in Altered States of Consciousness: Experiences Out of Time and Self (public library), translated by Philippa Hurd.
consciousness  books  perception  chronobiology  time 
29 days ago by maltodextrin
Craigslist's Craig Newmark: 'Outrage is profitable. Most online outrage is faked for profit' | Technology | The Guardian
The founder of the online classifieds site is a survivor from the era of internet optimism. He has given significant sums to protect the future of news – and rejects the idea his website helped cause journalism’s financial crisis
interview  network  emotions  perception 
4 weeks ago by basemaly

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