3 ms·
Yeah, agreed. I screen captured the unprocessed image from the webpage (which has been jpeg'd and therefore lost lots of the shadow detail). I loaded it into a
by abainbridge 9y ago
Yeah, agreed. I screen captured the unprocessed image from the webpage (which has been jpeg'd and therefore lost lots of the shadow detail). I loaded it into a paint package and did a simple (and computationally cheap) histogram adjustment. IMO, the results were at least as good as theirs. And these are the results they cherry picked. Not impressive.
I guess most people won't load the image into a paint package to fix it, so their aim is just to automatically do a job nearly as good as a trivial change a human would make. Still, I was hoping for more.
- sdrothrock 9y agoI don't think the Pixel Visual Core is supposed to do anything new or revolutionary -- the primary purpose is to do these old things FASTER for the user.
- abainbridge 9y agoBut a simple histogram stretch can be done with very little processing power by modern standards. 50 ms on one core of the application processor would be enough. I think they just chose bad examples. The results from this Google Research blog post are much much more impressive: https://research.googleblog.com/2017/04/experimental-nighttime-photography-with.html https://research.googleblog.com/2017/04/experimental-nightti... I wish my smartphone could do _that_ automatically.
- phs318u 9y agoThanks for that. That was amazing.
- dharma1 9y agoYou end up with a lot more noise with simple histogram adjustment from a single image, plus the dynamic compression to a final 8bit image won't look as good for many use cases. Exposure fusion from multiple images has much higher usable dynamic range and lower noise.
- glenneroo 9y agoFaster and supposedly uses much less power. > Using Pixel Visual Core, HDR+ can run 5x faster and at less than one-tenth the energy than running on the application processor (AP).
- em3rgent0rdr 9y agoNot just faster but more energy efficient I presume. That's especially important when taking long videos.
- baldfat 9y agoBUT it is HDR aka they take multiple of photos and use the under exposed for the sky and the more exposed for the faces. So they are doing MUCH more then a histogram.