Inconsistent Image Rendering with IIS

I have coded a class that uses the bitmap class to generate graphics from
True Type fonts. I'm using it primarily to render 3 of 9 barcodes from a
True Type font. When the exact same code is used to generate a barcode from
some Web servers the barcodes print nice and clean. From other Web servers
the barcodes print out very blurry. As a result, the blurry barcodes will
not scan.

We have eliminated printers and browsers as the culprit and narrowed it down
to the Web server. We eliminated browers as the culprit by using the same
brower on the same machine to print barcodes served from 2 different
instances of IIS. On one site the barcodes always print clean and on the
other they always are fuzzy. Since we are always printing to the same
printer, that is eliminated as a point of failure.

Does anyone know why images rendered using the Bitmap class might render
differently from one IIS (v5.1) server to another? Is there a setting
somewhere that I don't know about? Here is some additional information:

Images Encoded as JPEG with 0% compression
On all machines (fuzzy and clean) .NET Framework is V1.1.4322
On all machines (fuzzy and clean) IIS version is V5.1

Thanks,
Corey

David
Thu Feb 22 17:16:54 CST 2007

I eliminate the issue as involving "Image Rendering with IIS" since
IIS is not even involved other than to launch your code to do the
rendering.

It sounds like some inconsistent machine-wide setting affecting
results with TrueType.

Maybe you have system-wide anti-aliasing enabled for True-Type on one
machine but not another? For example, IE7 makes you tweak such an anti-
aliasing default on the machine - I notice that TrueType renders a
little blurry/fuzzy with Anti-Aliasing enabled.


//David
http://w3-4u.blogspot.com
http://blogs.msdn.com/David.Wang
//




On Feb 22, 2:08 pm, "Corey Ellsworth" <cellswo...@imcwv.com> wrote:
> I have coded a class that uses the bitmap class to generate graphics from
> True Type fonts. I'm using it primarily to render 3 of 9 barcodes from a
> True Type font. When the exact same code is used to generate a barcode from
> some Web servers the barcodes print nice and clean. From other Web servers
> the barcodes print out very blurry. As a result, the blurry barcodes will
> not scan.
>
> We have eliminated printers and browsers as the culprit and narrowed it down
> to the Web server. We eliminated browers as the culprit by using the same
> brower on the same machine to print barcodes served from 2 different
> instances of IIS. On one site the barcodes always print clean and on the
> other they always are fuzzy. Since we are always printing to the same
> printer, that is eliminated as a point of failure.
>
> Does anyone know why images rendered using the Bitmap class might render
> differently from one IIS (v5.1) server to another? Is there a setting
> somewhere that I don't know about? Here is some additional information:
>
> Images Encoded as JPEG with 0% compression
> On all machines (fuzzy and clean) .NET Framework is V1.1.4322
> On all machines (fuzzy and clean) IIS version is V5.1
>
> Thanks,
> Corey