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Re: coordinate systems (was: Re: Linear image)

On Jun 12, 2005, at 6:21 PM, Sam Kass wrote:
Thanks, this helps a lot. So, just to clarify one thing... If I have an image and want to sample 1 pixel to the right of the current location, I would add 1.0 to x in working coordinates, and run it through samplerTransform to get sampler coordinates. It looks like I've been doing this wrong all along, and it's just happened to work since I never did anything too complex with the image inputs and outputs.

yes, that would be the way. For total correctness you'd also need to add a method describing the region-of-interest of the kernel (the destination region grown by one pixel to the right in this case), otherwise you'd see seams when operating on large images,

    John



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References: 
 >Re: Linear image (From: Ralph Brunner <email@hidden>)
 >Re: Linear image (From: Sam Kass <email@hidden>)
 >Re: Linear image (From: Pierre-Olivier Latour <email@hidden>)
 >Re: Linear image (From: John Harper <email@hidden>)
 >coordinate systems (was: Re: Linear image) (From: Sam Kass <email@hidden>)



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