1) Converted all images to JPG to reduce size.

1) Converted all images to JPG to reduce size.
2) Added a raw Latex page break directive after each TOC tree. (For the PDF tutorial look).
3) Two finished tutorials:
   a) one describing how the Mat data structure works and its output capabilities (format function) (demonstration YouTube video included).
   b) one describing image scanning operations plus the LUT function (demonstration YouTube video included).
   c) a basic filtering approach (plus multi row image scanning demonstration) in the work.