How JPG Works

Posted by ingve on Tuesday April 26, 2016 @06:10PM
from the medium.com dept.

https://medium.com/@duhroach/how-jpg-works-a4dbd2316f35

( 6 comments | 47 points | on HN )

Re:How JPG Works by ashmud on Thursday April 28, 2016 @11:45AM (#11589708)

I think the article could have used a little more on chroma subsampling ("downsampling," per the article). A couple examples: It is basically an optional step (in the case of 4:4:4). And the visual impact on heavily saturated colors (looking at you, bright red).

[ Parent | on HN ]

Re:How JPG Works by wmu on Wednesday April 27, 2016 @12:25PM (#11581867)

Really good introduction, well written.

[ Parent | on HN ]

Re:How JPG Works by netsharc on Wednesday April 27, 2016 @12:50PM (#11582152)

Talks about a technology. Misspells its name.

Ctrl-F gives me 17 results for JPG, 3 results for JPEG.

[ Parent | on HN ]

Re:How JPG Works by perflexive on Thursday April 28, 2016 @02:22AM (#11586849)

As far as I'm concerned, they're interchangeable. I can't be the only one who thinks so.

[ Parent | on HN ]

Re:How JPG Works by err4nt on Thursday April 28, 2016 @09:35AM (#11588672)

JPEG is an acronym for “Joint Photographics Experts Group”. So I guess “JPEG” refers to a collection of humans. They specified an image format also called JPEG, which has been implemented as the JPEG file format, whose filename suffix is “.jpg”

[ Parent | on HN ]

Re:How JPG Works by perflexive on Saturday April 30, 2016 @02:52PM (#11603010)

What I'm saying is that at no point was I confused about what they were trying to communicate, so as far as I'm concerned it makes no difference outside of just being pedantic.

[ Parent | on HN ]