If you would like doing further glyph recognition on your own, you may use ExtractedGlyphData.RawData, which is a 2D arrays containing raw glyph values extracted from the processed images. The array contains "0" and "1" values, which correspond to black and white cells of a glyph.
However it is better to do glyph recognition utilizing the Glyph Recognition library. In order to do this you need to create a glyphs' database and utilize it in conjunction with the GlyphRecognizer class. Here is the code for creating a glyphs' database containing 3 glyphs: