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Patent

Arabic handwriting recognition using feature matching

TLDR
In this article, an Arabic handwriting recognition system takes an input from a stylus in the form of an ordered sequence of data, and subsequently strokes (or directed line segments) are extracted from the sequence.
Abstract
An Arabic handwriting recognition system takes an input from a stylus in the form of an ordered sequence of data. The sequence of data is then processed to eliminate any noise associated with data, and subsequently strokes (or directed line segments) are extracted from the sequence of data. More analysis of the strokes is performed to transform the input data into a features vector. Next, the features vector is matched against the features of all Arabic letters using fuzzy matching and dynamic programming techniques. During this matching process, the input word is segmented into the sequence of characters that maximized the matching score. In addition, external objects (such as: single dots, double dots, triple dots, hamzas, or maddas) that are above and below Arabic letters are detected.

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Citations
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Patent

Two tiered text recognition

TL;DR: In this paper, a two-tier system for Arabic text recognition is proposed, where one tier can recognize predetermined groups of linked letters that are connected based on condition joining rules of a language associated with the text, and another tier dissects (and recognizes) such linked letters to respective constituent letters that form the predetermined group.
Patent

Ink warping for normalization and beautification / ink beautification

TL;DR: In this article, a classifier can identify extrema in the digital handwriting and label such extremas according to predefined categories (e.g., bottom, baseline, midline, top, other, etc.).
Patent

Character recognition for overlapping textual user input

TL;DR: In this paper, the authors describe techniques to recognize handwritten characters that are written at least partially over the top of one another that are input to a computing device, where handwritten characters may be formed of one or more strokes.
Patent

Adaptive partial character recognition

TL;DR: In this article, a method and system for recognizing a character affected by a noise or an obstruction is disclosed after receiving an image with characters, the character being affected by the noise or obstruction is determined, and the character is classified in a template among the updated templates by finding the template having the highest number of matching pixels with the character.
Patent

Online Arabic handwriting recognition

Jihad El-Sana, +1 more
TL;DR: In this paper, a method for online character recognition of Arabic text was proposed, which includes receiving handwritten Arabic text from a user in the form of handwriting strokes, sampling the handwriting strokes to acquire a sequence of two dimensional point representations thereof, with associated temporal data, geometrically pre processing and extracting features on the point representations, detecting delayed strokes and word parts in the pre processed point representations.
References
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Proceedings Article

A handwritten Arabic character recognition technique for machine reader

TL;DR: A technique for real-time recognition of unconstrained Arabic characters is presented and can be extended to cursive words after introducing the additional segmentation stage.
Patent

On-line handwritten kanji recognizing device corresponding to free stroke order and continuously writing stroke

Cho Okubun
TL;DR: In this paper, a handwritten Kanji recognizing device is proposed to determine spatial relative relation between segments by utilizing a coordinate point and the direction of each segment of each stroke of an inputted handwritten KanJi and reconstructs all segments.