Using ImageMagick to make sharp web-sized photographs • Hacker News Board

Re: Using ImageMagick to make sharp web-sized photographs

#61

Post by gambogi » Sun, Jul 07, 2013, 11:35 AM UTC

dageshi wrote: post #41

coherentpony wrote: post #31

It'd be great if you put two in this post so we can see the difference without having to run all of the commands first.

Apparently if you mouse over the image, the sharpened image overlays the original (no I didn't pick that up either, it was mentioned on another comment :)

But it totally breaks when you can't hover over the image... like on mobile

Re: Using ImageMagick to make sharp web-sized photographs

#62

Post by dbcooper » Sun, Jul 07, 2013, 2:59 PM UTC

madVR uses the ImageMagick jinc with anti-ringing filter to upscale video. Looks pretty good. :)

Re: Using ImageMagick to make sharp web-sized photographs

#63

Post by geon » Sun, Jul 07, 2013, 9:07 PM UTC

I have noticed that sharpening an image makes them look worse on high resolution displays like the iPhone 4+ or Macbook Retina.

Re: Using ImageMagick to make sharp web-sized photographs

#64

Post by natch » Fri, Jul 12, 2013, 3:30 PM UTC

medde wrote: post #38

natch wrote: post #29

Earlier quoted context omitted.

He has an example at his github link where he uses a simple bash for loop to do many images at once.

but it does seem inefficient if you often have lots of images to process

how so?