ڈاکٹر محمد ضیاء الدین انصاری
ڈاکٹر محمد ضیاء الدین انصاری میرے مخلص اور عزیز دوست تھے، مجھے ان کے انتقال کی خبر بہت دیر سے ملی، وہ علی گڑھ مولانا آزاد لائبریری میں ڈپٹی لائبریرین تھے، وہاں جاتا تو مطلوبہ کتابیں فوراً حاضر کرتے اور چائے سے خاطر تواضع کرتے، اصرار کرکے گھر بلاتے اور پرتکلف دعوت کرتے، خدابخش لائبریری کے ڈائریکٹر ہوکر وہ پٹنہ گئے تو اسے ترقی دینے کے لئے متعدد کام کئے اور کئی سمینار کرائے جن میں مجھے مدعو کرتے، وہاں سے ریٹائر ہوکر علی گڑھ آئے تو مولانا حسین احمد مدنیؒ پر ایک سمینار کا پروگرام بنایا مگر وہ نہ ہوسکا، ضیاء الدین صاحب کو علم و ادب سے بڑا شغف تھا اور وہ اچھے منتظم بھی تھے، کئی کتابیں لکھیں لیکن اشاریہ نگار کی حیثیت سے انہوں نے اپنا خاص سکہ جمایا، وہ بڑے شریف، نیک طینت، خوش خلق اور مرنجان مرنج شخص تھے، اﷲ تعالیٰ انہیں جنت نعیم عطا کرے اور پس ماندگان کو صبر جمیل عطا فرمائے، آمین۔
(ضیاء الدین اصلاحی، اپریل ۲۰۰۷ء)
There are two major parts of Arabic literature i.e. Prose and poetry. Arabic poetry has a great value among the critics and the literati. A series of seven poems known as Muʽallaqāt Sabʽa or ʽAšhara have a great deal in the Arabic poetry. These are the collection of seven or ten long poems that are considered as the excellent work of the pre-Islamic era known as Jāhilīya ages. These poems had been presented in the annual fair of Okaz on the occasion of pilgrimage and awarded to be the top class creative works. After that judgment, golden genres were written with silk and recited judgment, as well as taught consecutively up to date. The ancient Arabic literature is full of such like prized poems but the valuable position met to this compilation is unprecedented. Since the poets of these master pieces are among the most famous figures of the 6th century taken together, these poems provide a good picture of Budouin life besides its connotation of rhetorical semantics figurative devices are tricky during its studies. Metaphor, trope, allusive ironies, metonymies and many more colloquial figures of speech are to be observed in this renowned collection. This article deals with the rhetorical study of Muʽallaqa of Imru’ al-Qais, by identifying the magnificence of assimilation and critism on his poem, alond with the analysis and explanation of its objectives.
Digital Watermarking of Stereoscopic Images Using Depth Image Based Rendering and Machine Learning The increasing acceptance of 3D-TV in recent years has attracted attention of the research community and industry towards the technology. Depth Image Based Rendering (DIBR) is the latest advancement in 3D-TV and free-view television. With the widespread of 3D content, copyright protection is becoming a serious concern for maximizing the profits and preventing illegitimate acquisition and distribution of the 3D media content. Digital watermarking is one such promising technique to tackle this problem. This thesis presents a comprehensive literature study of application of digital watermarking techniques, i.e., the three different paradigms for 3D images in particular and 3D-TV system in general. These paradigms include robust, fragile, and reversible watermarking for 3D system. In addition, this work also presents an improved reduced reference image quality assessment for 3D images along with a comprehensive literature survey of the field. Firstly, this thesis proposes a robust watermarking technique for 3D-TV. The proposed technique is based upon intelligent parameter selection using Genetic Algorithm (GA) in an improved spread spectrum based watermarking system. In order to enhance robustness, another layer of security of the watermark is added using Bose–Chadhuri–Hocquenghem (BCH) coding. Experimental results and comparison with state of the art technique demonstrate the effectiveness of the proposed technique to structure the watermark for high robustness in the presence of a number of hostile attacks. The second phase of this research proposes a fragile watermarking scheme for 3D-TV system for the purpose of content authentication. The proposed technique is based upon implicit watermarking of a number of other un-watermarked coefficient from a dependence neighborhood in a DCT based watermarking schemes. Such a scheme is robust against common counterfeiting attacks such as collage attack, cover up attack, transplantation, and vector quantization attack. In addition, the propose scheme is also capable of localizing the tempering of the cover work. x In the third phase of this research work, a reversible watermarking technique for DIBR 3D-TV is developed. The DIBR 3D-TV or free-view TV is one of the most promising technique in multimedia world. So, the protection of these valuable contents is an important concern in the world of digital processing. This study exploits the interpolation scheme by applying Genetic Programming (GP) based intelligent reversible watermarking technique. Previously, the empirical solutions are not that much effective and use hit and trial strategies for selecting optimal space for watermark embedding. The proposed scheme achieved considerable watermark capacity as well as Structure Similarity Index Metric (SSIM) and Peak Signal to Noise Ratio (PSNR), compared to existing state of the art contemporary schemes. The existing methods performed well against GA and Particle Swarm Optimizer (PSO), but show relatively less performance compared with Tian’s method. However, the PSNR value in the proposed method outperforms against Tian’s scheme. The proposed algorithm is tested on different standard publicly available 3D datasets. It is observed that the proposed scheme gives relatively better results compared with state of the art techniques. Last phase of this research work proposes an enhanced reduced reference image quality assessment technique. Reduced reference image quality assessment (RR-IQA) technique does not require the presence of the original image for assessing the quality of a degraded image. This work proposes an intelligent method for reduced reference image quality assessment based on Reorganized Discrete Cosine Transform (RDCT). The GA is used to compute optimized estimation of Generalized Gaussian Distribution (GGD), which then approximates the coefficient distribution in RDCT domain. Experimental results validate that such an intelligent estimation produces far superior results as compared to conventional empirical estimation methods as presented in literature. The comparative analysis of the proposed technique with a number of contemporary techniques present in the literature demonstrate the generalization capability and effectiveness of the proposed technique as compared to prior works.