Re: QuickTime to NSImage
Re: QuickTime to NSImage
- Subject: Re: QuickTime to NSImage
- From: Lance Pysher <email@hidden>
- Date: Thu, 21 Aug 2003 09:24:10 -0700
Graphics Converter is a wonderful program, but it also only supports 8 bits per sample. The current decompression tools I have work fine, but there is a extra copy to disk to access the decompressed image. I could do something similar with QuickTime, but I would rather keep everything in memory.
Also the command line tools I use have MMX routines, but no Altivec or G5 optimization. By using QuickTimes codecs I'm hoping Apple will do the hardwork of optimizing the codec for the mac, and I can have fast image transcoding in memory.
Lance
On Thursday, August 21, 2003, at 08:30AM, Cameron Hayne <email@hidden> wrote:
>
On 21/8/03 1:13 AM, "Lance Pysher" <email@hidden> wrote:
>
>
> JPEG 2000 and 16 bit Grayscale jpeg. Although NSImage "supports" 16 bit
>
> grayscale TIFF images it down samples them to 8 bit. That down
>
> sampling destroys the DICOM medical images I'm using need access to the
>
> whole 16 bits. I have already subclassed NSImage and NSBitmapImage rep
>
> to handle the 16 bit grayscale data. I'm currently using an outside
>
> tool for decompression of the jpegs, but I would prefer to use use
>
> QuickTime. Currently ihave no way to decompress the jpeg2000 data.
>
>
I may not be understanding something here, but if you are already "using an
>
outside tool for decompression of the jpegs", why not use Graphic Converter?
>
It handles almost all formats and seems to have good AppleScript support.
>
>
--
>
Cameron Hayne (email@hidden)
>
Hayne of Tintagel
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