Digital pen writer verification device

A text independent writer verification device, comprising:

• a display panel configured to display hand written cursively connected Arabic words and individual hand written Arabic alphabets written by one or more target users;
• a memory configured to store the hand written cursively connected Arabic words and the individual hand written Arabic alphabets;
• an input device in the form of a digital pen to receive the hand written Arabic alphabets written by the one or more target users and communicatively connected to processing circuitry, and
• wherein the processing circuitry is configured to:
• receive a dataset, the dataset including a set of hand written cursively connected Arabic words, the set of hand written cursively connected Arabic words including a minimum set of words that encompass the entire set of Arabic alphabets;
• extract individual alphabets from each of the set of hand written cursively connected Arabic words to form extracted individual alphabets for the entire set of Arabic alphabets;
• remove whitespace around the extracted individual alphabets;
• train a deep learning Convolution Neural Network classifier with four convolution layers based on the extracted individual alphabets to form a trained deep learning classifier;
• receive a new hand written cursively connected Arabic word by the target user;
• perform the trained deep learning classifier to classify the target user based on the received new hand written cursively connected Arabic word;
• and
• verify the target user from the classified target user, the verification of the target user including a verification accuracy of the hand written cursively connected Arabic words being larger than a verification accuracy threshold value;
• wherein the verification accuracy (β) of each hand written cursively connected Arabic word (w) for the target user (userj) is computed as:
• β
• =
• ∑
• i
• F
• user
• j
• (
• a
• i
• )
• ❘
• "\[LeftBracketingBar]"
• w
• ❘
• "\[RightBracketingBar]"
• wherein w= {a1, a2, . . . , am},
• wherein for β≥0.5 the hand written cursively connected Arabic word (w) is verified to be written by the target user (userj).