Re: Decompressing JPEG data into specific format, getting raw pixels
Re: Decompressing JPEG data into specific format, getting raw pixels
- Subject: Re: Decompressing JPEG data into specific format, getting raw pixels
- From: "Sean McBride" <email@hidden>
- Date: Wed, 16 Aug 2017 19:29:34 -0400
- Organization: Rogue Research Inc.
On Tue, 15 Aug 2017 10:07:47 -0700, Doug Hill said:
>>> Check out CoreImage ColorControls filter, which has a Saturation parameter:
>>
>> Thanks Doug and Jonathan for the CIImage suggestion, I'll take a
>closer look. But one thing I don't see at all in CIImage.h is how to
>get an NSData of the pixels of a CIImage. There are init methods that
>take NSData, but nothing I see gives NSData.
>>
>> I should note that I have no need to draw this data whatsoever. I
>only need access to the raw pixels to do some custom processing on.
>
>NSBitmapImageRep can be created from a CIImage, and has methods for
>creating an NSData version of the bitmap, or just getting the bitmapData
>and/or data planes.
Right, but then I'm back where I started. :( Because there's (apparently) no
way to ensure that the NSBitmapImageRep I get is in a particular format, and I
absolutely need 8 bit per pixel & greyscale.
Cheers,
--
____________________________________________________________
Sean McBride, B. Eng email@hidden
Rogue Research www.rogue-research.com
Mac Software Developer Montréal, Québec, Canada
_______________________________________________
Cocoa-dev mailing list (email@hidden)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden