Digital Repository for University of Tripoli

Holoscopic 3D imaging (H3D) technology also known as integral imaging is a true 3D imaging technology. It offers the simplest form that is capable of recording and replaying the true light field 3D scene in the form of a planar intensity distribution, by employing Microlens array. Despite it uses the same characteristics of holographic, it records the 3D information in 2D form and display in full 3D with optical component, without the need of coherent light source and confine dark fine. In addition, it facilitates postproduction processing such as refocusing. This makes it more practical approach for real-time 3D image capture and display. In this paper, a new method of extract 3D integral images data from raster maps. The R2V is an advanced raster to vector conversion software system is mainly used in order to generate geographical 3D integral images. Experimental results are extremely satisfactory and for the first time it is proved that, Geographic 3D Integral Images is generated. It means that, a new certain approach enables GIS applications of using 3D integral images is now established.
Dr. Mahmoud Geat Eljadid(12-2021)

Integral imaging, also known as Holoscopic imaging to be promising approach for glassless 3D and Its methodology uses the principle of “Fly’s eye” and hence allows natural viewing of objects (i.e. fatigue free viewing), In this paper, the main objective is to provide a new plug-in tools for full parallax computer generated 3D Holoscopic content, based mainly on 3D Virtual Reality Modeling Language parser to enable 3D integral images content and rendering to be produced from VRML file format, and displayed on auto-stereoscopic. In the proposed system, the 3D content is either captured by a single camera with a micro lens, cylindrical lens array or computer generated to allow for mixed 3D video generation. Multiprocessor ray tracing system is adapted to be able to generate 3D integral images that containing 3D IIVRML integral images content parser modules; new 3D IIVRML file format is created by uses 3D unidirectional camera parameters in order to import/accept into ray tracer renderer software. Experimental results show validation of the new plug-in software tool and tests on such Tie scene and Cessna scene . Consequently, 3D integral images frames and short time 3D II movie are generated and displayed without a glass on PC screen, LCD and the HoloVizio.
Dr. Mahmoud Geat Eljadid, Prof. Amar Aggoun(1-2018)

3D Holoscopic imaging (also known as Integral imaging) is a technique that is capable of creating and encoding a true volume spatial optical model of the object scene in the form of a planar intensity distribution by using unique optical components. It is akin to holography in that 3D information recorded on a 2D medium can be replayed as a full 3D optical model, Typically, moving from cylindrical lens to the next cylindrical lens is carried out knowing the lens width, Lw, which defines the translation of the camera along the x optical axis and hence the position of the new camera cylindrical lens. This new renderer is represented in the paper by the term integral ray tracing (IRT). In this paper, a method of generation 3D integral images camera file parameters is proposed. The camera file is an important part of the process of generating micro-images and set up the camera position. The method is mainly based on Parallel Multiprocessor Ray Tracing System adapted "Tachyon" as renderer. Experimental results show validation of the new algorithm and the lenticular lens can be set up and tested on small-balls, gears, room, tree and teapot scenes.
Dr. Mahmoud Geat Eljadid, Prof. Amar Aggoun, Dr. Osama Hassan Youssef(1-2018)

The main purpose of this paper is to introduce some techniques to overcome 3D missing information visual artefacts problem, holes and blank regions between 3D integral images (holoscopic images) frames encountered with the computer generated 3D integral image, pixel-tracing styles is proposed to achieve a higher performance of generating 3D integral images in terms of execution time, Z-buffer and correct occlusion scheme is also introduced to overcome visual artefact. The methods are based on a 3D integral images ray-tracer containing 3D integral images parser, 3D integral camera model, a 3D integral images renderer and scene transformations. Consequently, fast sequences of 3D integral image frames for animations purposes are generated, experimental results show validation of the strategies to fill in the 3D missing pixels and test on different scenes, improvement in terms of execution time depends on the complexity of the scene is achieved.
Dr. Mahmoud Geat Eljadid, Prof. Amar Aggoun, Dr. Osama Hassan Youssef(1-2014)

3D Integral Imaging (also referred to as 3D Holoscopic imaging) methodology uses the principle of “Fly’s eye” and hence allows natural viewing of objects (i.e. fatigue free viewing); 3D-holoscopic technology produces images that are true optical models. This technology is based on physical principles with duplication of light fields. In this paper, a new method of visualization medical 3D integral images is proposed. Digital Imaging and Communications in Medicine data images (DICOM) taken from CT, MRI, PET and US images that produced by 3D-Doctor software to generate medical 3D integral images visualization of anatomy without glass in natural light. The method is mainly based on multiprocessor ray tracing system as renderer. The medical 3D content is captured in real time with the content viewed by multiple viewers independently of their position, without the needs of 3D eyewear. Experimental results show validation of the new algorithm and demonstrated that medical 3D integral images content can be displayed on commercially available multi-view auto-stereoscopic display. Medical 3D integral images content is parsed into multiprocessor ray tracing system, consequently, short time of medical 3D integral images movie of such pelvis scene is generated and displayed on PC screen, LCD and Holovizio display.
Dr. Mahmoud Geat Mahmoud Eljadid, Prof. Amar Aggoun(5-2016)

The main purpose of this paper is to introduce 3D integral imaging interpolation method, to overcome the 3D missing information problem occurred between cylindrical lenses (micro-images) due to occluded areas in the previous cylindrical lens, new cylindrical lens shows an area, to generate one single photo-realistic 3D integral imaging frame. The method is based on a Multiprocessor ray-tracer containing 3D integral imaging parser, 3D integral camera model, a 3D integral imaging renderer, spatial coherence and 3D scene transformations. Consequently, an increase in speed in the generation of still 3D integral image is achieved compared to fully ray tracing time of missing pixels. Experiments show that a significant reduction in execution time is achieved by using the 3D integral interpolation process. Savings up to (57%-66%) in the ray tracing time when compared to fully ray tracing the missing pixels depends on the complexity of the scene. 
Dr. Mahmoud Geat Eljadid, Prof. Amar Aggoun, Dr. Osama Hassan Youssef(1-2022)

Larynotrachitis (LT) is a viral respiratory tract infection of chickens that may result in severe production losses due to mortality and decrease egg production. Samples (live and dead birds) from two flocks of 30 weeks old layers (Iza Brown) were admitted to our department. The clinical signs, gross and microscopic
Abdulatif Asheg (9-2007)

تسعى وزارة التربية والتعليم في ليبيا إلى التحول الرقمي من خلال تزويد المؤسسات التعليمية، لاسيما مؤسسات رياض الأطفال بالأنظمة الالكترونية بشكل تدريجي ابتداءً من منظومات خاصة بدرجات الطلبة وتنسيب الطلبة من مرحلة إلى مرحلة عن طريق النظام الالكتروني، جاءت فكرة هذه الدراسة كمحاولة من الباحثتان لمعرفة مدى تأثير ادخال التحول الرقمي في الإجراءات الإدارية وقياس هذا الأثر وتحديد أهم الإيجابيات لتطبيق هذا النظام، وما التحديات التي يمكن أن تواجهنا في تطبيق هذا النظام، بالإضافة إلى معرفة مدى فاعلية تطبيق هذا النظام في مؤسسات رياض الأطفال بليبيا . مشكلة الدراسة: تم صياغة مشكلة الدراسة في السؤال الرئيس التالي" ما هو تأثير التحول الرقمي في أداء مؤسسات رياض الأطفال في ليبيا؟ " وللإجابة على تساؤل الدراسة استخدمت الباحثتان المنهج الوصفي التحليلي بالاعتماد على الاستبانة كأداة رئيسية للدراسة حيث كانت عينة الدراسة (50) من معلمات روضة عروس طرابلس وروضة الامل المشرق تم اختيارهم عشوائياً وكان العائد منهم والصالح للتحليل (49) استبانة إي بنسبة 98 %. توصلت نتائج الدراسة إلى: 1. ضعف البنية التحتية التكنولوجية (الأصول الرقمية) فبناء وتطوير البنية التحتية وتوفير الوصول الآمن للخدمات والبيانات عالية الجودة من أهم متطلبات نجاح التحول الرقمي في المؤسسات التعليمية بشكل عام وفي رياض الأطفال بشكل خاص. 2. نقص الكفاءات المهنية القادرة على تبني وقيادة وتنفيذ برامج التحول الرقمي وإحداث التغيير المطلوب داخل مؤسسات رياض الأطفال 3. قلة مراكز تدريب رفع مستوى المهارات والقدرات الخاصة بالتحول الرقمي. 4. قلة التمويل ومحدودية الميزانيات والمخصصات لتنفيذ برامج التحول الرقمي بمؤسسات رياض الأطفال. 5. نشر الوعي وتطوير المهارات الرقمية ومحو الأمية الرقمية لدى كافة العاملين برياض الأطفال. 6. قلة توافر الموارد المالية. 7. العمل على زيادة الوعي لدى المسئولين وأصحاب القرار بمؤسسات رياض الأطفال بأهمية التحول الرقمي
ليلى رمضان عبدالله جويبر, عفاف خليفة محمد الترهوني(3-2022)