Re: drawing an array of pixels to the screen
Re: drawing an array of pixels to the screen
- Subject: Re: drawing an array of pixels to the screen
- From: Alex Kac <email@hidden>
- Date: Fri, 9 Nov 2007 22:37:11 -0600
OpenGL. Its easy to use on OS X and its a great 2D drawing mechanism.
As Ben at VMware said - its as close to BitBlt as you're going to get
on OS X :)
On Nov 9, 2007, at 9:57 PM, email@hidden wrote:
Message: 12
Date: Fri, 9 Nov 2007 22:27:19 -0500
From: Jason Horn <email@hidden>
Subject: drawing an array of pixels to the screen
To: email@hidden
Message-ID: <email@hidden>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
I am working on a computer vision based app that detects objects in
video images. I have to implement custom algorithms to locate and
track objects, so I need to write code that has direct access to the
pixel values and keep track of the x,y coordinates of certain
objects. This is easiest to do with the image represented as a 2D
array of int values. However, it seems that the only way to draw
bitmaps to the screen is with NSImage and NSBitmapImageRep or
CIImage. Is there another way? It seems like a waste (and a
performance hit) to convert a 2D array of pixel values into a byte
stream every time you want to display the image. Is there a way to
draw the pixel values directly to the screen (and do it quickly).
Thanks for any ideas.
Alex Kac - President and Founder
Web Information Solutions, Inc. - Microsoft Certified Partner
"If at first you don't succeed, skydiving is not for you."
-- Francis Roberts
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