C#.NET (Graphics): Image properties removed when converting object of Image type to Bitmap type.

Hello Folks,

In .net application when image is processed & merged with another image then its colors are affected.
Image image  ---------> Uploaded image

Bitmap xy = new Bitmap(image, image.Width, image.Height);  -----> Conversion into Bitmap to 

Select allOpen in new window

perform various operations like resize or merge with another image
So the “image” object has few “PropertyItems” and when we convert image to Bitmap type of object then these “PropertyItems” array is empty, that means these “PropertyItems” were not moved in this conversion.

Please find below snap shot before before move to Bitmap object.

Now after this image is moved into Bitmap object for resize purpose and “PropertyItems” array is empty

Actual Image

After processing through Bitmap

Note: This image is captured through Canon DSLR camera.

Questions
1. What is the reason behind that “PropertyItems” array is empty when convert image to Bitmap type of object.
2. How these properties can be managed when I need to merge two images (using “Graphics” class) and I don’t want forcefully to apply one image’s “PropertyItems” on to other image, to keep original colors of each image respectively.
3. What is the real solution to merge two different images with different quality and PropertyItems with each other and produce quality end result image.
4. Do you any other thoughts?


Best Regards,
Mohit Pandit