read a PNG image using emgu Image

Question

After saving a image in PNG format using

bitmap.save(filename, ImageFormat.PNG),

I now try to read the same image

Image<Rgb, Byte> inpImage = new Image<Rgb, Byte>(dir + fn_only + "_ms.png") using emgu Image. On runtime I get a

System.TypeInitializationException occurred in Emgu.CV.dll

Exception:

System.TypeInitializationException: The type initializer for 'Emgu.CV.CvInvoke' threw an exception. ---> System.DllNotFoundException: Unable to load DLL 'opencv _core242': The specified module could not be found. (Exception from HRESULT: 0x8 007007E) at Emgu.CV.CvInvoke.cvRedirectError(CvErrorCallback errorHandler, IntPtr user data, IntPtr prevUserdata) at Emgu.CV.CvInvoke..cctor() --- End of inner exception stack trace --- at Emgu.CV.Image`2..ctor(String fileName)

when opencv_242 is present. On dependency check it says NVCUDA is missing. I do not have a GPU, obv there wont be NVCUDA in that case.

I tried color type RGB and BGR.

If it's an NVCUDA issue, then you should read my answer to this question (not the approved answer): stackoverflow.com/questions/12594993/…. By the way, you DO have a GPU, it's only not an Nvidia GPU. — rold2007
– rold2007, Commented Oct 29, 2013 at 6:11

chefjuanpi · Accepted Answer · 2014-10-21 15:55:34Z

2

//a way is first open the PNG in a bitmap

Bitmap bitmap = new Bitmap(dir + fn_only + "_ms.png");

//and read the bitman how image

Image<Rgb, Byte> inpImage = new Image<Rgb, Byte>(bitmap);

ref: http://www.emgu.com/wiki/index.php/Working_with_Images Creating image from Bitmap

answered Oct 21, 2014 at 15:55

chefjuanpi

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