"Asfar" <asfar.sayeed@cashmgmt.com> wrote in message
news:eL5uv03UGHA.5808@TK2MSFTNGP12.phx.gbl...
> Hi
>
> I am using Bob Powell's approach for converting images to
> Format1bppIndexed.
>
> This process is taking more then 2 minutes for 7kb image. The final image
> thats created is right but the process takes very long.
>
> Can someone tell me if the conversion really takes that long or if I am
> doing something wrong.
>
> Thanks,
> -Asfar
>

"Bob Powell [MVP]" <bob@_spamkiller_.bobpowell.net> wrote in message
news:uHmuOTjVGHA.1348@TK2MSFTNGP15.phx.gbl...
>A lot will depend on the size of the image. You should also note that the
>article explains how do do the bitmap access with the Marshal class. This
>is because I wanted to have an equivalent set of demos for both C# and VB.
>I chose this because VB doesn't have the capability to use unsafe methods.
>
> To greatly speed up the conversion process you can replace the calls to
> Marshal.ReadByte and Marshal.WriteByte with equivalent unsafe calls
> written in C#.
>
> The LockBits article should give you the formulas there.
>
> --
> Bob Powell [MVP]
> Visual C#, System.Drawing
>
> Ramuseco Limited .NET consulting
> http://www.ramuseco.com
>
> Find great Windows Forms articles in Windows Forms Tips and Tricks
> http://www.bobpowell.net/tipstricks.htm
>
> Answer those GDI+ questions with the GDI+ FAQ
> http://www.bobpowell.net/faqmain.htm
>
> All new articles provide code in C# and VB.NET.
> Subscribe to the RSS feeds provided and never miss a new article.
>
>
>
> "Asfar" <asfar.sayeed@cashmgmt.com> wrote in message
> news:eL5uv03UGHA.5808@TK2MSFTNGP12.phx.gbl...
>> Hi
>>
>> I am using Bob Powell's approach for converting images to
>> Format1bppIndexed.
>>
>> This process is taking more then 2 minutes for 7kb image. The final image
>> thats created is right but the process takes very long.
>>
>> Can someone tell me if the conversion really takes that long or if I am
>> doing something wrong.
>>
>> Thanks,
>> -Asfar
>>
>
>