Re: Cocoa Graphics Parsing

2009-07-21 Thread Klaus Backert
On 21 Jul 2009, at 03:50, Courtney Arnold wrote: Hello all, I need to programmatically parse/read through the contents of an NSImage. I am unable to find a tutorial or documentation that would explain how to do so. I would like to get some input on where I may be able to search for this

Re: Cocoa Graphics Parsing

2009-07-21 Thread Jeffrey Oleander
From: Courtney Arnold court...@rnolds.com Subject: Re: Cocoa Graphics Parsing To: cocoa-dev@lists.apple.com Date: Monday, 2009 July 20, 21:25 I am expecting that I am going to have to drop down to lower levels. I want to be able to manually parse an image of a UPC barcode. I assume

Re: Cocoa Graphics Parsing

2009-07-21 Thread Alastair Houghton
On 21 Jul 2009, at 04:05, Graham Cox wrote: Internally, you have -getPixel:atX:y: which would presumably be the workhorse at the heart of your class. -getPixel:atX:y: is fine for the odd what-colour-is-this test, but it's the wrong thing to use for any kind of intensive pixel access.

Cocoa Graphics Parsing

2009-07-20 Thread Courtney Arnold
Hello all, I need to programmatically parse/read through the contents of an NSImage. I am unable to find a tutorial or documentation that would explain how to do so. I would like to get some input on where I may be able to search for this information. thank you,

Re: Cocoa Graphics Parsing

2009-07-20 Thread Graham Cox
On 21/07/2009, at 11:50 AM, Courtney Arnold wrote: I need to programmatically parse/read through the contents of an NSImage. I am unable to find a tutorial or documentation that would explain how to do so. I would like to get some input on where I may be able to search for this

Re: Cocoa Graphics Parsing

2009-07-20 Thread Courtney Arnold
I am expecting that I am going to have to drop down to lower levels. I want to be able to manually parse an image of a UPC barcode. I assume that the best way to do so would be to potentially examine each single pixel. any information that you provide, I would appreciate it. On Jul 20,

Re: Cocoa Graphics Parsing

2009-07-20 Thread Joel Norvell
Hi Courtney, Two resources that you might consider are the Quartz-dev mailing list and Programming with Quartz by David Gelphman. HTH, Joel ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or

Re: Cocoa Graphics Parsing

2009-07-20 Thread Graham Cox
On 21/07/2009, at 12:25 PM, Courtney Arnold wrote: I am expecting that I am going to have to drop down to lower levels. I want to be able to manually parse an image of a UPC barcode. I assume that the best way to do so would be to potentially examine each single pixel. any information

Re: Cocoa Graphics Parsing

2009-07-20 Thread John C. Randolph
On Jul 20, 2009, at 7:25 PM, Courtney Arnold wrote: I want to be able to manually parse an image of a UPC barcode. That's not parsing, that's image recognition. There's a rather extensive academic literature on the subject. -jcr ___

Re: Cocoa Graphics Parsing

2009-07-20 Thread Rob Keniger
On 21/07/2009, at 12:25 PM, Courtney Arnold wrote: I am expecting that I am going to have to drop down to lower levels. I want to be able to manually parse an image of a UPC barcode. I assume that the best way to do so would be to potentially examine each single pixel. As others have