Image resolution not converted

[denniskas]

If you pass a .NET bitmap to the engine the resolution of the image is ignored.
Here is the fix:

--- tesseract.net\src\Tesseract\BitmapToPixConverter.cs	Mon Sep 19 08:34:33 2016
+++ tesseract.net_bugfix\src\Tesseract\BitmapToPixConverter.cs	Wed Jan 04 14:40:18 2017
@@ -45,6 +45,13 @@
                 } else if (imgData.PixelFormat == PixelFormat.Format1bppIndexed) {
                     TransferDataFormat1bppIndexed(imgData, pixData);
                 }
+
+                if (img.VerticalResolution > 0 && img.HorizontalResolution > 0)
+                {
+                    pix.XResolution = (int)img.HorizontalResolution;
+                    pix.YResolution = (int)img.VerticalResolution;
+                }
+
                 return pix;
             } catch (Exception) {
                 pix.Dispose();
--- tesseract.net\src\Tesseract\Pix.cs	Mon Sep 19 08:34:33 2016
+++ tesseract.net_bugfix\src\Tesseract\Pix.cs	Wed Jan 04 14:21:12 2017
@@ -171,6 +171,18 @@
             return new PixData(this);
         }
 
+        public int XResolution
+        {
+            get { return Interop.LeptonicaApi.Native.pixGetXRes(handle); }
+            set { Interop.LeptonicaApi.Native.pixSetXRes(handle, value); }
+        }
+
+        public int YResolution
+        {
+            get { return Interop.LeptonicaApi.Native.pixGetYRes(handle); }
+            set { Interop.LeptonicaApi.Native.pixSetYRes(handle, value); }
+        }
+
         #endregion Properties
 
         #region Save methods
--- tesseract.net\src\Tesseract\PixToBitmapConverter.cs	Mon Sep 19 08:34:34 2016
+++ tesseract.net_bugfix\src\Tesseract\PixToBitmapConverter.cs	Wed Jan 04 14:41:18 2017
@@ -37,6 +37,10 @@
                 } else if (depth == 1) {
                     TransferData1(pixData, imgData);
                 }
+                
+                if (pix.XResolution > 0 && pix.YResolution > 0)
+                    img.SetResolution(pix.XResolution, pix.YResolution);
+                
                 return img;
             } catch (Exception) {
                 img.Dispose();