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Date Posted: 18:29:38 06/29/00 Thu
Author: Michel
Subject: Re: Jpeg Quality on Read Request
In reply to: Jay 's message, "Jpeg Quality on Read Request" on 17:48:34 06/28/00 Wed


Hi Jay,

I am not familiar with this, but I don't think if it is possible. As far as I know, the JPEG quality factor is used only when saving. It controls parameters used in the JPEG lossy compression algorithm. When reading a JPEG, the quality does not apply, the image is read with the quality that it was saved.

Best regards,

Michel

> Hi Michel,
> I am working on a project were we are using the
> Envision Components. Love Them. The App is a simple
> desktop publishing application. We save all raster
> images out as jpegs to our file. It would nice if the
> Jpeg class had an option on reading of the jpeg from
> the stream at a set quality. This would provide a
> simple way to speed up the displaying of images on
> machine with less resource. It would be great if it
> was a percentage. I know TJpegImage has a similar
> property but it is only a few possible states.
>
> Thanks
> Jay.

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