UWP Samples: Simple Imaging, Images Pictures
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Simple imaging sample
This sample demonstrates some common imaging scenarios for Universal Windows apps including metadata and editing/saving.

Image Properties (FileProperties)
Read, process and edit common image metadata and properties including:
EXIF orientation
Author, title, and keywords

Image transforms/encode (BitmapDecoder)
Perform scaling and rotation while respecting EXIF orientation
Optimize image saving
Image properties (FileProperties)

Source: https://github.com/Microsoft/Windows-universal-samples/tree/master/Samples/SimpleImaging