how to compress scanned file before sending server.

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i doing windows application when i scan image file this size is 10mb .this image file i want to compress before sending server.i want to send this file web application / server. so how to do so please give me suggestion.

Posted 27-Dec-13 21:01pm

Member 10279329

Updated 27-Dec-13 21:36pm

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BillWoodruff 28-Dec-13 3:17am

What format is the scan file in ? Are you sure it is not already compressed ?

Member 10279329 28-Dec-13 3:46am

image file is not already compressed .i want to compress image such as 1-3 mb compress 20%,3-5mb compress 30%.how to do.

Aydin Homay 28-Dec-13 3:55am

Winch one dot net is your platform ?

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OriginalGriff · Answer 1 · 2013-12-27T21:53:00

Compressing images is not always as simple as you might think - or as desirable.
Some formats are already compressed - JPG, PNG for example - and trying to compress them further can result in larger file sizes. Others are not compress - BMP for example - and these can be compressed using ZIP or RAR pretty well.

The other alternative is to try converting your image to a different file format, or saving it using different software or settings to the same format - but beware! Some formats like JPG use a lossy compression technique which can get astounding results, but which does so by "throwing information away" and this may impact the results later.

Check the scan format, and see if the original software can generate acceptable images in a compressed format first, then look at something like ZipLib to compress bitmaps for transfer later.

Aydin Homay · Answer 2 · 2013-12-27T22:00:00

Solution 2

Hi

I am 100% agree with Solution #1 but if you want to compress still you can follow of these links:

Image Format Conversion in .NET[^]
Compress Image to a given size
Compress Image files using C#
Compress images with jpeg codec in C#

Best Regards.

Posted 27-Dec-13 22:00pm

Aydin Homay

Member 10279329 · Answer 3 · 2013-12-29T19:32:00

thanks for reply me .i doing code following code

bool b = false;
string destimage = ConfigurationManager.ConnectionStrings["scanfilepath"].ConnectionString.ToString();
string saveimagepath = ConfigurationManager.ConnectionStrings["scan"].ConnectionString.ToString();

System.Drawing.Image tempImage = null;

try
{
FileStream fs = new FileStream(saveimagepath + imagename, FileMode.Open, FileAccess.Read);

tempImage = System.Drawing.Image.FromStream(fs);

FileInfo file = new FileInfo(saveimagepath+imagename);

Int64 imagesize = file.Length;
if (imagesize < 1024000 )
{

SaveJpeg(destimage + imagename, tempImage, 3);
b = true;

}

if (imagesize > 1024000 && imagesize <= 3072000)
{

SaveJpeg(destimage + imagename, tempImage, 20);
b = true;

}
catch (Exception jj)
{
MessageBox.Show("select image");

}
return b;
}

how to compress scanned file before sending server.

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