• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag
 

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
Re: Converting JPEG Image Greater Than 72dpi To 72dpi
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Converting JPEG Image Greater Than 72dpi To 72dpi


  • Subject: Re: Converting JPEG Image Greater Than 72dpi To 72dpi
  • From: Ali Ozer <email@hidden>
  • Date: Thu, 25 Aug 2005 08:27:11 -0700

Assuming you have a NSBitmapImageRep, if you set its point size (setSize:) equal to its pixel size (pixelsWide, pixelsHigh), you will get a 72dpi image without any loss of quality. However, this changes the size --- your 300dpi example image will now occupy 300/72 more space in each dimension when displayed. But I guess when you said "size" you didn't mean size but pixel size?
Ali




Begin forwarded message:

From: Ian was here <email@hidden>
Date: August 24, 2005 15:24:17 PDT
To: Apple Mailing List <email@hidden>
Subject: Converting JPEG Image Greater Than 72dpi To 72dpi

I found that if I load a JPEG that has a dpi greater
than 72 (like 300 dpi for example), I lose some bitmap
data. I have googled around and found info on getting
the size of images at various resolutions. What I
really need is a way to take a high resolution image
and convert it into 72dpi while maintaining the same
size and without losing any quality.

Do I ask too much?  Thanks.



____________________________________________________
Start your day with Yahoo! - make it your home page
http://www.yahoo.com/r/hs

 _______________________________________________
Do not post admin requests to the list. They will be ignored.
Cocoa-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Cocoa-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden


  • Follow-Ups:
    • Re: Converting JPEG Image Greater Than 72dpi To 72dpi (SOLVED)
      • From: Ian was here <email@hidden>
References: 
 >Converting JPEG Image Greater Than 72dpi To 72dpi (From: Ian was here <email@hidden>)

  • Prev by Date: beginSheet simple question.
  • Next by Date: Re: beginSheet simple question.
  • Previous by thread: Re: Converting JPEG Image Greater Than 72dpi To 72dpi
  • Next by thread: Re: Converting JPEG Image Greater Than 72dpi To 72dpi (SOLVED)
  • Index(es):
    • Date
    • Thread