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Re: CIFilter Problems Under Leopard

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Re: CIFilter Problems Under Leopard

Subject: Re: CIFilter Problems Under Leopard
From: Volker Runkel <email@hidden>
Date: Tue, 13 Nov 2007 10:53:34 +0100

Hi Robert,

I have no difference in image quality using simple color adjusting filters. I am not sure how the UnsharpMask filter kernel looks like, but is it possible that the filter increases the image size according to its input radius and such? GaussianBlur is doing that for sure.

another good source of information, where you could post your request is the Quartz-Dev mailinglist at email@hidden

Cheers
Volker

Am 13.11.2007 um 05:49 schrieb Robert McCullough:

Is anyone else having trouble with CIFilters producing "poor" images when running under Leopard?

For example, I have an image scaling routine that first applies a CILanczosScaleTransform, then applies a CIUnsharpMask filter to sharpen up the scaled down image. The CIUnsharpMask filter produces black lines around the image. Removing the CIUnsharpMask filter fixes the problem.

I have similar results with other filters such as brightness, contrast, exposure, etc. All of these filters seemed to work perfectly under Tiger.

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  >CIFilter Problems Under Leopard (From: Robert McCullough <email@hidden>)




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