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Home > An Ocr System for Printed Nastaliq Script: A Segmentation Based Approach

An Ocr System for Printed Nastaliq Script: A Segmentation Based Approach

Thesis Info

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External Link

Author

Naz, Saeeda

Program

PhD

Institute

Hazara University

City

Mansehra

Province

KPK

Country

Pakistan

Thesis Completing Year

2016

Thesis Completion Status

Completed

Subject

Computer Science

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/9944/1/Saeeda%20Naz_Hazara_2016.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676727700369

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Machine simulation of human reading has been a subject of intensive research for almost four decades. The latest improvements in recognition methods and systems for Latin script are very promising and matured product are available for those languages in the market. On the contrary, despite more than one decade of research in the field of Urdu Optical Character Recognition (OCR), the reading skill of the computer is still way behind that of human. Automatic Urdu character recognition is a challenging task due to less attention of researchers and intrinsic complexity of Urdu text. That is highly cursive and calligraphic nature, diagonality in writing, and vertical overlap between characters in a sub-word. In this research, we present a novel implicit segmentation based technique for development of an OCR for printed Nasta''liq text lines. This work introduces a novel and robust approach based on statistical models that provide solution for recognition of Nasta’liq style Urdu text. Unlike to classical approaches which segment text into words, ligatures or characters, we employ an implicit segmentation where text lines are recognized during segmentation. The developed system is evaluated on standard Urdu text databases and compared with the state-of-the-art recognition techniques proposed till date. In the proposed recognition system, we use two strategies, first is based on manual features and second on automatic features. In the first strategy, we split each text line image into small frames of width ‘n’ by using a sliding window and extract many features from each frame. These features are then concatenated to form a feature vector for the text line. In the second strategy, we extract features automatically by using the Multi-dimensional (MD) Long Short Term Memory (LSTM) model in one scenario and by Convolutional Neural Network (CNN) model in other scenario. Features extracted from the text lines along with their respective transcriptions are fed to a Recurrent Neural Network (RNN) for training or classification. Recognition is obtained by using MDLSTM based recognizers with the Connectionist Temporal Classification (CTC) output layer. The experiments conducted on a standard UPTI database yield promising results. We obtained 96.40% (3.6% error rate) recognition rates using manual features, 98% (2.0% error rate) using raw pixels based features and 98.12% (1.88% error rate) using CNN based features.
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ایسا چہرہ جو دیکھتا ہو گا

ایسا چہرہ جو دیکھتا ہو گا
چاند حیرت میں کھو گیا ہو گا

تم کو دیکھا تو دیکھتا ہی رہا
عکس حیران رہ گیا ہو گا

حسن زادی ترے جمال کے بعد
چاند بے چارہ قیس سا ہو گا

تم کہو اور میں ویسی ہو جائوں
ہو گا اک دن یہ معجزہ ہو گا

میں ہوں کردار تم کہانی ہو
حشر اب اس میں رونما ہو گا

مجھ سے ملنے کے، دیکھنے کے، فضاؔ
خواب وہ بھی تو دیکھتا ہو گا

مميزات التشريع الجنائي في الفقه الإسلامي: دراسة تحليلية

Occidentals, in antagonism to Islam, propagate that Law of Jinai is too stringent and rigid. For the reason that in Islam, a living human being is stoned to death, his hands and legs are cut into pieces, and that he is hanged. Some of our modern Muslims have been impressed of the same propaganda and are trying to alter the Islamic set of laws; they further misinterpret the laws ordained in this regard. The fact is that every Islamic law, especially the law of Jinai, is in favour of human beings, having such qualities which laws of the other religions lack. For example, Islam has provided clear distinction between Had and penalty. In Islam, the purpose of punishment is to reform and these Hadoods are not enforced unless the doubts are cleared. This comprehensive provisionary role of Islam is over sighted by the occidental Scholars. 

A Study of the Career Trajectories of School Teachers Who Become Headmasters and Principals

The role of a school head has been a significant factor in the success or otherwise of a school. Similarly, the pre-appointment training and continuous professional development of school heads play important role in their success as heads. Research indicates that when school teachers become school heads, generally with little or no pre-appointment training, they struggle in their initiation and socialization process as school heads. The current study was aimed to explore possible answers to questions around issues of personal and professional situations of the teachers that facilitate them in the process of becoming school heads in Khyber Pakhtunkhwa, Pakistan. The study explores answers to questions such as: What leads to teachers becoming school heads? What are the implications of becoming school heads? Whatexperiences do school heads have in their role socialization as heads? The study used qualitative, interpretive research approach, in accord with social constructionism. The sample of the study consisted of thirty male and female school heads in Peshawar, Khyber Pakhtunkhwa, Pakistan. The sample was selected using purposive and snowball sampling techniques. Semi-structured interviews were conducted with participants to collect data. The data so obtained was analyzed using thematic analysis. Findings reveal a variety of reasons behind the becoming of school teachers as school heads. Similarly, a variety of problems, issues and constraints are being faced by the respondents in their roles and socialization as school heads. The problems respondents faced in their professional socialization include dealing financial constraints, problematic teachers and lack of support from staff, absence of infrastructure and facilities in schools, overcrowded classrooms, lack of education officials’ cooperation and the bureaucratic iii centralization of powers. The headship role changes the respondents personal and professional identities and these identities often clash with their personal and professional responsibilities.Findings also show that there is lack of pre-appointment training for the school heads that has implications for their performance as school leaders. The study highlights the career trajectories of female school heads and the leading role experiences at school level and what kinds of problems they have been facing in the social context in which they lead.The study has important implications in terms of pre and post appointment professional development and training for school heads and regarding power delegation, and with respect to financial support, better facilities and delegation of appropriate power that may facilitate school heads in functioning in a better working environment. The female school heads need to be provided with differentiated provisions in terms of facilities and environment keeping in view their peculiar needs in a mainly conservative, male dominant working environment.