Handwritten text and graphic recognition system based on paper medium and recognition method

The invention discloses a handwritten text and graphic recognition system based on a paper medium. The handwritten text and graphic recognition system comprises a digital handwriting pen and a nano gridded touchpad, wherein the digital handwriting pen consists of a pen tip, a pressure sensor, a distance-measuring sensor, a data acquisition module, a storage, a battery, a color selection switch, a time-interval selection switch and a stroke-width selection switch; the gridded touchpad is formed by nano gridded microholes in a nano interval, and a pressure sensor is arranged under the microholes of the touchpad; the amounts of water and ink in the microholes are measured by the pressure sensor; and by the obtained storage amounts of the ink and the water added on each coordinate point, Chinese characters are recognized, and the profile of an ink painting is calculated to obtain accurate characters or the ink painting. The handwritten text and graphic recognition system disclosed by the invention has the advantages that direct connection with a computer is not needed, and an electronic document with Chinese characters or pictures can be formed on plain paper by handwriting.