Document reader with improved illumination

A document reader system configured to capture images of a document, the document reader system comprising:

• a document reader having
• a transparent scan area configured to receive the document on a first side of the transparent scan area,
• a light source, positioned on a second side of the transparent scan area opposite the first side, configured to emit light towards the transparent scan area,
• an image sensor positioned on the second side of the transparent scan area and configured to capture images of the document on the first side of the transparent scan area,
• a transparent display configured to selectively block light from the first side of the transparent scan area from reaching the image sensor;
• and
• a processor configured to control the transparent display to selectively block the light.

A method of capturing an image of a document, the method comprising:

• emitting light, by a light source, towards a second side of a transparent scan area, wherein a first side of the transparent scan area opposite the second side is configured to receive the document;
• capturing a first image of the document, by an image sensor, while the light source provides a first illumination output;
• capturing a second image of the document, by the image sensor, while the light source provides a second illumination output;
• and
• processing the first image and the second image to generate a third image of the document having corrected ambient light effects.