Convert NEF into jpeg or tiff


Goals:

This porject is used to convert NEF files into Jpeg or Tiff.

Steps:

1) Create a C# windows application project.

2) create a button control.

3) add the library reference of Adobe Photshop Type Library 8.0

4) Add the namespace

using ps = Photoshop;
using PhotoshopTypeLibrary;
using K = PhotoshopTypeLibrary.PSConstants;

5) copy the following code.



ps.ActionDescriptorClass ad = new Photoshop.ActionDescriptorClass();
ps.ApplicationClass app = new ps.ApplicationClass(); // specify the filename
ad.PutPath((int)K.phEnumNull, "D:\\WorkArea\\FLASH\\UploadedFiles\\Monalisa.NEF" );
ps.ActionDescriptorClass ad2 = new Photoshop.ActionDescriptorClass();
ad2.PutString(app.CharIDToTypeID("CMod"), "Nikon D70"); // camera model
ad2.PutEnumerated((int)K.phTypeColorSpace, (int)K.phTypeColorSpace, (int)K.phEnumAdobeRGB1998); // color space
ad2.PutEnumerated((int)K.phTypeBitDepth, (int)K.phTypeBitDepth, (int)K.phEnumBitDepth16); // bit depth
ad2.PutInteger((int)K.phKeySizeKey, 3008); // the width... why?
ad2.PutDouble((int)K.phKeyResolution, 240.0); // DPI
int ReUnID = app.CharIDToTypeID("ReUn"); // ???
ad2.PutEnumerated(ReUnID, ReUnID, app.CharIDToTypeID("PpIn")); // maybe this forces it
ad.PutObject((int)K.phKeyAs, app.StringIDToTypeID("Adobe Camera Raw"), ad2); // identifies the target object
app.ExecuteAction((int)K.phEventOpen, ad, (int)ps.PsDialogModes.psDisplayNoDialogs);
app.Quit();

6) run the application.

Hi Oxygen,

I am also working on the raw images conversion processing. Really its good for me. But in my project i have support all kinds of RAW images. do you have conversion for any other RAW image types? particularly i need for CRW,RAF type RAW images. It will be good if u give some idea on this.


Thanks

Hi Oxygen,

Is there any simple way to convert the NEF image into JPEG or TIFF using Photoshop DLL.

Thanks...

S.Balasubramanian..

Hi bala,

You can use the below snippets for conversion.

Photoshop.ApplicationClass app = new Photoshop.ApplicationClass();
app.Visible = false; app.DisplayDialogs = Photoshop.PsDialogModes.psDisplayNoDialogs;
Photoshop.JPEGSaveOptionsClass jpgs = new Photoshop.JPEGSaveOptionsClass();
Photoshop.TiffSaveOptionsClass tiffs = new Photoshop.TiffSaveOptionsClass();
jpgs.Quality = 8;
Photoshop.Document ps = app.Open(@"D:\pt.NEF", null); ps.SaveAs("D:\\psaveimage", jpgs, null,2);
ps.SaveAs("D:\\saveImage1", tiffs, null, 2);
ps.Close(null);
ps = null;
app.Quit();
app = null;

hope its useful

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Oxs

I tried ur new code to convert the CRW files,but it say 'Out of Memory' issue. I have to implement these option in my prjoct very shortly. Please help me to come out from this issue.

Hi,

I have tried to convert raw images using DCRAW. Dcraw is a raw converter used to convert more than 244 different types of raw images into tiff or jpg or ppm. Dcraw source can be download from the site Decoding raw digital photos in Linux as C or C++ source. Dcraw converts the raw image with Exif properties. Supported raw formats: CRW, CR2, MRW, NEF, RAF, etc..
Dcraw exe can be download from http://www.insflug.org/raw/.

C# code to call dcraw exe:

Process proc = new Process();
ProcessStartInfo startInfo = new ProcessStartInfo("dcraw.exe", "-T D:\\sample.CR2");
startInfo.CreateNoWindow = true;
startInfo.WindowStyle = ProcessWindowStyle.Hidden;
startInfo.UseShellExecute = false;
proc.StartInfo = startInfo;
proc.Start();
while (!proc.HasExited)
{
}
proc.Close();

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