The Cellar  

Go Back   The Cellar > Images > Quality Images and Videos

Quality Images and Videos Post your own images and videos of your own days

Reply
 
Thread Tools Display Modes
Old 06-10-2017, 04:04 PM   #1966
Gravdigr
The Un-Tuckian
 
Join Date: Apr 2007
Location: South Central...KY that is
Posts: 39,517
Anyone know why pictures w/green as the predominant color have larger file sizes?

Srs question.
__________________


These statements have not been evaluated by the FDA, EPA, FBI, DEA, CDC, or FDIC. These statements are not intended to diagnose, cause, treat, cure, or prevent any disease. If you feel you have been harmed/offended by, or, disagree with any of the above statements or images, please feel free to fuck right off.
Gravdigr is offline   Reply With Quote
Old 06-10-2017, 05:53 PM   #1967
lumberjim
I can hear my ears
 
Join Date: Oct 2003
Posts: 25,571
I give up
__________________
This body holding me reminds me of my own mortality
Embrace this moment, remember
We are eternal, all this pain is an illusion ~MJKeenan
lumberjim is offline   Reply With Quote
Old 06-10-2017, 11:34 PM   #1968
BigV
Goon Squad Leader
 
Join Date: Nov 2004
Location: Seattle
Posts: 27,063
the jpg compression isn't sensitive to color, but to complexity. your picture of the grass, if all blue or red or mauve would be the same size, but less complex (fewer different shades) pictures, green or otherwise would be compressed more.

there's a lot of green out there.
__________________
Be Just and Fear Not.
BigV is offline   Reply With Quote
Old 06-11-2017, 02:03 AM   #1969
xoxoxoBruce
The future is unwritten
 
Join Date: Oct 2002
Posts: 71,105
Playing with your picture.
Attached Images
 
__________________
The descent of man ~ Nixon, Friedman, Reagan, Trump.
xoxoxoBruce is offline   Reply With Quote
Old 06-12-2017, 12:49 PM   #1970
Happy Monkey
I think this line's mostly filler.
 
Join Date: Jan 2003
Location: DC
Posts: 13,575
I suspect the increase in size is when the image editor tries to preserve the JPG artifacts from the first conversion when resaving as another JPG.

As for the original question, I think humans can see more shades of green than any other color, so an image format super-optimized for the human eye might allocate more bits to green. I have no idea whether JPG does anything along those lines.
__________________
_________________
|...............| We live in the nick of times.
| Len 17, Wid 3 |
|_______________| [pics]
Happy Monkey is offline   Reply With Quote
Old 06-12-2017, 01:20 PM   #1971
Gravdigr
The Un-Tuckian
 
Join Date: Apr 2007
Location: South Central...KY that is
Posts: 39,517
Green is pretty much leaves, and/or grass. Do ya suppose all those textures/edges (for lack of a better word, edges of the leaves, edges of each blade of grass) make for a larger file?
__________________


These statements have not been evaluated by the FDA, EPA, FBI, DEA, CDC, or FDIC. These statements are not intended to diagnose, cause, treat, cure, or prevent any disease. If you feel you have been harmed/offended by, or, disagree with any of the above statements or images, please feel free to fuck right off.
Gravdigr is offline   Reply With Quote
Old 06-12-2017, 01:34 PM   #1972
Happy Monkey
I think this line's mostly filler.
 
Join Date: Jan 2003
Location: DC
Posts: 13,575
Yes; that's what BigV was saying. I was offering an explanation for why Bruce's picture increased in size after changing the color. JPG compression artifacts add even more edges and complexity to the image, in a way that decreases the file size during the initial encoding. But when the file is loaded into an editor, all of those artifacts become data, and when saving it off as a JPG again, they are treated as real complexity, making the JPG encoding work harder. Another reason the file size increased may be differing JPG quality settings between the initial and secondary encodings.

My second note was more of an aside; I don't think JPG does it. But, much as an MP3 throws away information about sound that humans have trouble distinguishing, an advanced image format could theoretically throw away a bit of red and blue in favor of green, to match the human eye. If such a theoretical image were primarily green, it wouldn't be able to throw as much data away.
__________________
_________________
|...............| We live in the nick of times.
| Len 17, Wid 3 |
|_______________| [pics]
Happy Monkey is offline   Reply With Quote
Old 06-12-2017, 03:57 PM   #1973
xoxoxoBruce
The future is unwritten
 
Join Date: Oct 2002
Posts: 71,105
I think you(and Big V) are on the right track. Saving from Photoshop as a medium or high quality look the same on my monitor. Probably because any detail lost wouldn't be noticeable in this picture. If it were a sharp finely detailed design, it would probably show.
I didn't think the variation in file size was significant except for the high quality Red & Blue, but the save quality choice is a slide bar from 0 to 12, so I might have fucked up sliding a hair further on that one.
__________________
The descent of man ~ Nixon, Friedman, Reagan, Trump.
xoxoxoBruce is offline   Reply With Quote
Old 06-14-2017, 10:20 AM   #1974
Gravdigr
The Un-Tuckian
 
Join Date: Apr 2007
Location: South Central...KY that is
Posts: 39,517
Name:  tomandhen2.jpg
Views: 233
Size:  183.6 KB
__________________


These statements have not been evaluated by the FDA, EPA, FBI, DEA, CDC, or FDIC. These statements are not intended to diagnose, cause, treat, cure, or prevent any disease. If you feel you have been harmed/offended by, or, disagree with any of the above statements or images, please feel free to fuck right off.
Gravdigr is offline   Reply With Quote
Old 06-27-2017, 12:04 PM   #1975
Gravdigr
The Un-Tuckian
 
Join Date: Apr 2007
Location: South Central...KY that is
Posts: 39,517
Out the driver's side mirror:

Name:  DSCF6594ab.jpg
Views: 213
Size:  214.7 KB

That fence went on for quite a ways. It has barbed wire on the inside, to keep the critters off it, I suppose.
__________________


These statements have not been evaluated by the FDA, EPA, FBI, DEA, CDC, or FDIC. These statements are not intended to diagnose, cause, treat, cure, or prevent any disease. If you feel you have been harmed/offended by, or, disagree with any of the above statements or images, please feel free to fuck right off.
Gravdigr is offline   Reply With Quote
Old 06-27-2017, 11:30 PM   #1976
xoxoxoBruce
The future is unwritten
 
Join Date: Oct 2002
Posts: 71,105
Yes, without the wire they'll stick their heads through to get the grass that's greener on the other side. That fence won't take much chest pushing.
__________________
The descent of man ~ Nixon, Friedman, Reagan, Trump.
xoxoxoBruce is offline   Reply With Quote
Old 09-28-2017, 02:32 PM   #1977
Gravdigr
The Un-Tuckian
 
Join Date: Apr 2007
Location: South Central...KY that is
Posts: 39,517
GAH!! Factor: 7

Brace yourself.
__________________


These statements have not been evaluated by the FDA, EPA, FBI, DEA, CDC, or FDIC. These statements are not intended to diagnose, cause, treat, cure, or prevent any disease. If you feel you have been harmed/offended by, or, disagree with any of the above statements or images, please feel free to fuck right off.
Gravdigr is offline   Reply With Quote
Old 09-28-2017, 02:32 PM   #1978
Gravdigr
The Un-Tuckian
 
Join Date: Apr 2007
Location: South Central...KY that is
Posts: 39,517
Orbweaver:

Name:  orbweaver.jpg
Views: 169
Size:  66.5 KB

That gruesome sumbitch was exactly Gravdigrface high. I almost walked right into him her it. Outside diameter a little bigger than a quarter.
__________________


These statements have not been evaluated by the FDA, EPA, FBI, DEA, CDC, or FDIC. These statements are not intended to diagnose, cause, treat, cure, or prevent any disease. If you feel you have been harmed/offended by, or, disagree with any of the above statements or images, please feel free to fuck right off.
Gravdigr is offline   Reply With Quote
Old 09-29-2017, 12:24 AM   #1979
xoxoxoBruce
The future is unwritten
 
Join Date: Oct 2002
Posts: 71,105
did you check his cute little paws?
__________________
The descent of man ~ Nixon, Friedman, Reagan, Trump.
xoxoxoBruce is offline   Reply With Quote
Old 09-29-2017, 12:29 PM   #1980
Gravdigr
The Un-Tuckian
 
Join Date: Apr 2007
Location: South Central...KY that is
Posts: 39,517
No, but I almost checked his insides.
__________________


These statements have not been evaluated by the FDA, EPA, FBI, DEA, CDC, or FDIC. These statements are not intended to diagnose, cause, treat, cure, or prevent any disease. If you feel you have been harmed/offended by, or, disagree with any of the above statements or images, please feel free to fuck right off.
Gravdigr is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 02:52 PM.


Powered by: vBulletin Version 3.8.1
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.