Graphics and Image Manipulation in C#

[Rui Oliveira]

Hi,

Im thinking of starting to use C# instead of Java. Can anyone tell me what
are the main differences between C# and Java (graphics and image manipulation)?
Java is very poor in graphics performance. Does anyone have performance results,
benchmarks between Java and C# concerning image manipulation?

Thank u,

Rui

[Eric Gunnerson]

I don't have any Java measurements, but I can tell you that C# gives you the
option of dealing with images directly (ie as a big array of pixels) and
iterate over them with pointers. That gives a big speedup over the
non-pointer version in C#.

To convert a 2048 x 1536 color image to greyscale takes about 8.5 seconds in
my original version, but less than half a second in the version that uses
pointers.

Here's the column I wrote to discuss this:

http://msdn.microsoft.com/library/de...us/dncscol/htm
l/csharp11152001.asp

I'd suggest coding something simple in C# and Java and comparing the speed
yourself.

--
Visit the C# product team at http://www.csharp.net

This posting is provided "AS IS" with no warranties, and confers no rights.

"Rui Oliveira" <cplus.@127.0.0.1> wrote in message
news:3e36899c$1@tnews.web.devx.com...
>
> Hi,
>
> Im thinking of starting to use C# instead of Java. Can anyone tell me what
> are the main differences between C# and Java (graphics and image
manipulation)?
> Java is very poor in graphics performance. Does anyone have performance
results,
> benchmarks between Java and C# concerning image manipulation?
>
> Thank u,
>
> Rui

[Rob Abbe]

Rui,

What is it you are doing in Java that is slow? Have you looked at JAI?
I do imaging work in Java the performance is quite good.

Rob Abbe

"Rui Oliveira" <cplus.@127.0.0.1> wrote:
>
>Hi,
>
>Im thinking of starting to use C# instead of Java. Can anyone tell me what
>are the main differences between C# and Java (graphics and image manipulation)?
>Java is very poor in graphics performance. Does anyone have performance
results,
>benchmarks between Java and C# concerning image manipulation?
>
>Thank u,
>
>Rui