Capabilitie Trouble when 16 Bit Grayscale Tiff Scanning

[babboleo]

HY!!!
😥
my question:
I have to create an application that scans a document in 16-bit gray scale and saved in TIFF format, uncompressed 600 dpi. Of course I must not use the Epson interface.
With the Epson interface there are no problems but when I try to do the same thing programmatically, I can not set the capabilities in the right way and I always get an error. Using C # visual studio 2010. Is there any good Samaritan who can help me?
The steps are:
1) Select Source (not required)
2) Scan the document in A4 format such as TIFF 16-bit grayscale(without Espon UI)
3) Save to file, or manage it as an array in memory.

… Before I committed suicide. Thank you very much and please excuse the language!

[Kaij]

Please make sure that you scan in buffered memory mode and not in native mode which can not support 16 bit.

Best regards,
Kaij
http://www.jse.de

[Adam]

What error message did you get when setting through capabilities? Also, are you using a third-party tool to do the scanning or program from scratch based on the twain specification? If the latter, you can use DG_CONTROL / DAT_IDENTITY / MSG_USERSELEC to get the select source dialog box. ICAP_SUPPORTEDSIZE can be used for page size. For detailed information, you can refer to the specification:
https://www.twain.org/docs/TWAIN_2_1_Spec.pdf

___________________
Adam
Dynamsoft: The leading developer of version control software and TWAIN SDK

[Nana111]

Hi there
I have googled a code for tiff scanning:
RasterEdgeImaging TIFF = new RasterEdgeImaging();
public class AcquisitionClass
{
private bool AcquireCanceled;
private Acquisition Acquisition = new Acquisition(this);
public void Scan()
{
AcquireCanceled = false;
Acquisition.AcquireCanceled += new EventHandler(OnAcquireCanceled);
Acquisition.AcquireFinished += new EventHandler(OnAcquireFinished);
Acquisition.ImageAcquired += new ImageAcquiredEventHandler(OnImageAcquired);
Device activeDevice = Acquisition.ShowSelectSource();
activeDevice.Acquire();
}
private void OnImageAcquired(object sender, AcquireEventArgs e)
{
if (e.Image != null)
{
TiffEncoder enc = new TiffEncoder(TiffCompression.Default, true);
FileStream fs = new FileStream(“1.tif”,FileMode.OpenOrCreate, FileAccess.ReadWrite);
enc.Save(fs, AtalaImage.FromBitmap(e.Image), null);
fs.Close();
}
}
private void OnAcquireCanceled(object sender, EventArgs e)
{
AcquireCanceled = true;
}
private void OnAcquireFinished(object sender, EventArgs e)
{
if (AcquireCanceled)
return;
TiffImageCollection col = new TiffImageCollection();
TiffDecoder dec = new TiffDecoder();
FileStream fs = new FileStream(“1.tif”, FileMode.Open, FileAccess.Read);
int frameCount = dec.GetFrameCount(fs);
fs.Close();
for(int i=0; i< frameCount; i++)
col.Add(new TiffImage(“1.tif”, i, TiffCompressionType.Auto));

FileStream outStream = new FileStream(“1.tiff”, FileMode.OpenOrCreate, FileAccess.ReadWrite);
TiffEncoder enc = new TiffEncoder();
enc.Save(outStream, col, null);
}
But it can not word effectively.What’s wrong with my code?
Is there any powerful tiff processing program which supports to do that directly?Thanks a lot.

[peterlee]

@Nana111 wrote:

Hi there
I have googled a code for tiff scanning:

RasterEdgeImaging TIFF = new RasterEdgeImaging();

public class AcquisitionClass

{

private bool AcquireCanceled;

private Acquisition Acquisition = new Acquisition(this);

public void Scan()

{

AcquireCanceled = false;

Acquisition.AcquireCanceled += new EventHandler(OnAcquireCanceled);

Acquisition.AcquireFinished += new EventHandler(OnAcquireFinished);

Acquisition.ImageAcquired += new ImageAcquiredEventHandler(OnImageAcquired);

Device activeDevice = Acquisition.ShowSelectSource();

activeDevice.Acquire();

}

private void OnImageAcquired(object sender, AcquireEventArgs e)

{

if (e.Image != null)

{

TiffEncoder enc = new TiffEncoder(TiffCompression.Default, true);

FileStream fs = new FileStream("1.tif",FileMode.OpenOrCreate, FileAccess.ReadWrite);

enc.Save(fs, AtalaImage.FromBitmap(e.Image), null);

fs.Close();

}

}

private void OnAcquireCanceled(object sender, EventArgs e)

{

AcquireCanceled = true;

}

private void OnAcquireFinished(object sender, EventArgs e)

{

if (AcquireCanceled)

return;

TiffImageCollection col = new TiffImageCollection();

TiffDecoder dec = new TiffDecoder();

FileStream fs = new FileStream("1.tif", FileMode.Open, FileAccess.Read);

int frameCount = dec.GetFrameCount(fs);

fs.Close();

for(int i=0; i< frameCount; i++)

col.Add(new TiffImage("1.tif", i, TiffCompressionType.Auto));



FileStream outStream = new FileStream("1.tiff", FileMode.OpenOrCreate, FileAccess.ReadWrite);

TiffEncoder enc = new TiffEncoder();

enc.Save(outStream, col, null);

}

But it can not word effectively.What’s wrong with my code?
Is there any powerful tiff processing program which supports to do that directly?Thanks a lot.

Hi, Nana111.
Using code to deal with the related problem is too complicated for me. Why not use some professional tools? You can google it and have a try. I hope you success. Good luck.

Best regards,
Peter

[Author]

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