research centers


Search results: Found 20

Listing 1 - 10 of 20 << page
of 2
>>
Sort by

Article
Depth Image Extraction using Adaptive K-Means Clustering Algorithm
استخلاص عمق الصورة باستخدام خوارزمية Adaptive K-Means

Authors: Sanaa Sh. Ahmed سناء شهاب احمد --- Hasanen S. Abdullah حسنين سمير عبدالله
Journal: Journal of Al-Ma'moon College مجلة كلية المأمون ISSN: 19924453 Year: 2018 Issue: 32 Pages: 290-303
Publisher: AlMamon University College كلية المامون الجامعة

Loading...
Loading...
Abstract

This work presents a proposed approach to extract depth map of stereoscopic images depended on segmentation of lightness values of pixels ‘L’ using adaptive K-Means cluster. The proposed approach finds the disparity map of segmentation lightness pixels and refines those segment by using morphological filtering and connected components analysis. Experimental results from Middlebury dataset show that the proposed approach performs good results in term of accurate depth and time consuming compared with classical Sum of Absolute Difference (SAD) approach and SAD with Gradient Difference (GRAD) algorithm.

إن هذا العمل يمثل خوارزمية مقترحة الى استخلاص عمق الصورة بالنسبة للصور Stereoscopic اعتمادا على تقطيع النقاط المضيئة باستخدام خوارزمية Adaptive K-Means . حيث تم ايجاد خريطة التباين لتقطيع النقاط المضيئة وتحسين هذه القطع باستخدام morphological filter وتحليل المكونات المترابطة .حيث اثبتت النتائج باستخدام Middlebury Dataset ان الخوارزمية المستخدمة تعطي نتائج جيدة بمصطلح العمق الدقيق للصورة والوقت المستغرق للتنفيذ مقارنة مع طريقة SAD التقليدية وطريقة SAD with GRAD algorithm


Article
A new Color image Encryption based on multi Chaotic Maps

Authors: Ibtisam A.Taqi --- Sarab M. Hameed
Journal: Iraqi Journal of Science المجلة العراقية للعلوم ISSN: 00672904/23121637 Year: 2018 Volume: 59 Issue: 4B Pages: 2117-2127
Publisher: Baghdad University جامعة بغداد

Loading...
Loading...
Abstract

This paper presents a new RGB image encryption scheme using multi chaotic maps. Encrypting an image is performed via chaotic maps to confirm the properties of secure cipher namely confusion and diffusion are satisfied. Also, the key sequence for encrypting an image is generated using a combination of 1D logistic and Sine chaotic maps. Experimental results and the compassion results indicate that the suggested scheme provides high security against several types of attack, large secret keyspace and highly sensitive.


Article
CALCULATIONS OF EARTHWORK QUANTITY BY USING CIVIL 3D

Authors: Montaqa Mokhalad Alhaydary --- Asmaa Abdul Al- Jabbar Hadi
Journal: Journal of Engineering and Sustainable Development مجلة الهندسة والتنمية المستدامة ISSN: 25200917 Year: 2018 Volume: 22 Issue: 6 Pages: 13-20
Publisher: Al-Mustansyriah University الجامعة المستنصرية

Loading...
Loading...
Abstract

This study aims to calculate the earthwork volumes by Civil 3D. Civil 3D is modern software techniques application used by civil engineers and other professionals to plan, design, and manage engineering projects .These projects need an efficient techniques for computation the earthworks volumes with high accuracy and short time in both theoretical and practical works. Surveying methods for the earthworks quantity are most common and important activities for civil engineers these modern techniques have a potential to offer more productivity and efficiency for Civil 3D in earthwork quantity calculation. Civil 3D connects design and documentation to enabling you to boost productivity, deliver higher quality designs and construction documenters.

Keywords

earthwork --- Volume --- Contour Map --- Civil3D.


Article
An Improve Image Encryption Algorithm Based on Multi-level of Chaotic Maps and Lagrange Interpolation
تحسين خوارزمية تشفير الصور اعتمادا على دوال فوضوية متعددة المستويات واستيفاء لاكرانج

Authors: Salam Abdulnabi Thajeel سلام عبدالنبي ثجيل --- Mohammed Sabbih Hamoud Al- Tamimi محمد صبيح حمود التميمي
Journal: Iraqi Journal of Science المجلة العراقية للعلوم ISSN: 00672904/23121637 Year: 2018 Volume: 59 Issue: 1A Pages: 179-188
Publisher: Baghdad University جامعة بغداد

Loading...
Loading...
Abstract

Currently no one can deny the importance of data protection, especially with the proliferation of hackers and theft of personal information in all parts of the world .for these reasons the encryption has become one of the important fields in the protection of digital information. This paper adopts a new image encryption method to overcome the obstacles to previous image encryption methods, where our method will be used Duffing map to shuffled all image pixels ,after that the resulting image will be divided into a group of blocks for perform the shuffling process via Cross Chaotic Map. Finally, an image called key image was created by using Quadratic number spirals which will be used to generate numbers of polynomial equations via Lagrange interpolation to perform pixel diffusion.Simulations have been accomplished in order to evaluate the effectiveness of suggested technique, the Experimental results demonstrate that the proposed method can supply sufficient security for the confidentiality of images.

حاليا لا يمكن لأحد أن ينكر أهمية حماية البيانات، وخاصة مع انتشار القراصنة وسراق المعلومات الشخصية في جميع أنحاء العالم .لهذه الأسباب أصبح التشفير واحدة من المجالات الهامة في حماية المعلومات الرقمية.في هذا البحث اقترحنا طريقة جديدة لتشفير الصور الرقمية للتغلب عل المشاكل الموجودة بالطرق السابقة ، حيث تم استخدام طريقة Duffing map لغرض تغيير مواقع جميع بكسلات الصورة وبعد ذلك سيتم تقسيم الصورة الناتجة إلى مجموعة من الكتل لغرض تنفيذ عملية اعادة نشر لهذة الكتل (shuffling) . أخيرا سيتم استخدام Quadratic number spirals لغرض توليد صورة سميت بالصورة المفتاحية و التي تم استخدامها لتوليد عدد من المعادلات متعدد الحدود بواسطة الاستيفاء لاغرانج Lagrange interpolation حيث تم استخدام هذه المعادلات بتغيير قيم نقاط الصورة المبعثرة . تم تنفيذ النظام المقترح واثبتت النتائج العملية بان النظام المقترح يوفر حماية كافية وموثوقية للصور.


Article
Landmark Based Shortest Path Detection in Alarm System

Authors: Saad N. AlSaad --- Nadia M. Hussein
Journal: Al-Mustansiriyah Journal of Science مجلة علوم المستنصرية ISSN: 1814635X Year: 2018 Volume: 29 Issue: 2 Pages: 135-140
Publisher: Al-Mustansyriah University الجامعة المستنصرية

Loading...
Loading...
Abstract

In this paper, an alarm system for four types of emergency states (explosion, car accident, earthquake and fire) is built. The proposed system divided in to two parts: transmitted part (Arduino, sensors, GSM and GPS), and emergency part (central site and sub center sites). Central site consists of (Android phone, Server while Sub center sites (helping centers) contain the mobile phones of competent authorities like police center or hospital. The alerting as a SMS message is sent by GSM. The system used Haversine formula to determine the nearest sub center from emergency state that receives the SMS alarm message from transmitted part. Also the path is tracked using Google map application.

في هذا البحث، تم بناء نظام إنذار لأربعة أنواع من حالات الطوارئ (الانفجار، حادث سيارة، الزلزال و الحريق). وينقسم هذا النظام إلى جزأين: الجزء المتنقل (اردوينو، وأجهزة الاستشعار، النظام العالمي للاتصالات المتنقله ، نظام المواقع العالمي)، وجزء الطوارئ (الموقع المركزي، المواقع فرعيه). الموقع المركزي يتضمن (هاتف الاندرويد,الخادم)، المراكز الفرعية (مركز مساعدة) تمثل الهواتف النقالة للسلطات المختصة مثل مركز الشرطة أو المستشفى. يتم إرسال التنبيه في هذا النظام كرساله قصيره بواسطة النظام العالمي للاتصالات المتنقله. استخدم النظام صيغة هافرسين لتحديد أقرب مركز فرعي من حالة الطوارئ التي تتلقى رسالة التنبيه القصيره من الجزء المتنقل. كما يتم تتبع المسار باستخدام تطبيق خريطة جوجل.

Keywords

Arduino --- GSM --- GPS --- Proteus --- Google map --- Haversine.


Article
Accuracy Assessment of World View-2 Satellite Imagery for Planimetric Maps Production

Authors: A.Z. Khalaf --- I.A.K. Alwan --- T.A. Kadhum
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2018 Volume: 36 Issue: 1 Part (A) Engineering Pages: 1-9
Publisher: University of Technology الجامعة التكنولوجية

Loading...
Loading...
Abstract

A planimetric map of scale 1:10,000 meets the requirements of a large segment of user’s maps for instance urban city planners and various GIS implementations. Nowadays, a very high-resolution satellite images, such as World View02 (WV02) with spatial resolution of 0.5 m, are very important to produce planimetric maps or update existing ones. Main aim of this research is the assessment of WV02 image for production of the planimetric photomap of scale 1:10,000 with class 1 according to ASPRS standards (ASPRS give accuracy tolerances for map scales at 1:20,000 or larger, this accuracy reported as Class 1, 2, or 3). The investigation includes, studying the best-fit mathematical model (order of polynomial transformation model) that can be used to perform geometric correction for the used image. As well as, examine the effect of the ground control points (GCPs) configuration on the accuracy that can reached from photomap by using the best polynomial order. The Root Mean Square Error (RMSE) resulting at the checkpoints (CPs) will be evaluated. Before the study of impact of the mentioned effects, will be studying the possibility of obtaining a photomap with scale of 1:10,000 and determining the class of this map by using raster satellite image directly (raw image). Through it will compare the coordinates of GCPs observed by using Differential Global Positioning System (DGPS) on the raster WV02 satellite image with respect to its true position on the ground. Taking into consideration this comparison will be conducted according to international standards (National Standard for Spatial Data Accuracy (NSSDA) and American Society for Photogrammetry and Remote Sensing (ASPRS) standards). Evidenced by the results that have been accessible, it cannot obtained on photomap with scale of 1:10,000 of class1 according to ASPRS standard from raw WV02 satellite image, because the RMSE was 4.709 m, this value is largest of allowable error value for this class of the scale. Further, the extracted results showed that using a 1st order polynomial for WV02 image correction with the 14 GCPs that well distributed is slightly superior to other order polynomials (2nd and 3rd order) with a total RMSE of 0.790 m at the 8 ground CPs. On the other hand, using 13 GCPs well distributed (covers the wholly raster of the used image) for the correction process with the same polynomial order, the total RMSE obtained is 0.894 m obtained at 9 CPs, which is less than the value of two pixel size (user-threshold value) of WV02 image. As well as, according to NSSDA and ASPRS standards, this result satisfies the requirements of large-scale maps production accuracy (larger than 1:10,000). In addition, by decreasing the number of the GCPs (using 9 GCPs until 4) the reliability of the results decreases (i.e., the horizontal error increased, approximately 1.4 m are obtained at CPs), but at the same time can get a photomap within scale of 1:10,000.


Article
Propose an Arabic CAPTCHA System based on Chaotic Maps

Authors: Mariam T. Sulaiman --- Nidaa F. Hassan
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2018 Volume: 36 Issue: 1 Part (B) Scientific Pages: 48-52
Publisher: University of Technology الجامعة التكنولوجية

Loading...
Loading...
Abstract

CAPTCHA is the facility that prevents web bots from accessingthe web services by generating tests to check whether the user is human orcomputer program. In this paper, a new pseudo-random bits generator basedon chaotic system is offered to generate Arabic letters and numbers forCAPTCHA system. The proposed generator uses two Jacobian ellipticChebyshev rational maps that are combined in the algorithm to produce ablock of 32bits in each iteration. A specified number of bits are selected fromthe resulted blocks to be converted to a set of Arabic letters and numbers.National Institute of Standards and Technology (NIST) statistical test suiteare used to assess the generator randomness, all tests has been passed exceptLongest Run of Ones in a Block Test, Binary Matrix Rank Test and RandomExcursions Test.


Article
VIDEO ENCRYPTION BASED ON CHAOTIC SYSTEM AND STREAM CIPHER
تشفير الفيديو على أساس نظام الفوضى و تشفير الدفق

Loading...
Loading...
Abstract

The huge development and use of digital multimedia (video, image) over computer networks has led toincrease the need for securing of these digital data. Video encryption is widely used as a method for providing securityfor digital video. In this paper video encryption method is developed using chaotic system for key generator andstream cipher, it uses chaotic map as one-time key generator which produce key used for encryption process. Chaoticsystems have been successfully used for multimedia encryption. Chaotic cryptography have good characteristic suchas pseudo-randomness, and sensitivity to initial conditions. Video encryption method have successfully designed andimplemented, the tests and analysis results have showed the succeed of the encryption method in term of speedand security.

أدى التطور الهائل واستخدام الوسائط المتعددة الرقمية (الفيديو، الصورة) عبر شبكات الكمبيوتر إلى زيادة الحاجة إلى تأمين هذه البيانات الرقمية. يستخدم التشفير الفيديوي على نطاق واسع كوسيلة لتوفير الأمان للفيديو الرقمي. هذا البحث تم تطوير التشفير الفيديوي باستخدام نظام الفوضى لمولد مفتاح و دفق التشفير، والذي يستخدم خريطة الفوضى كمولد مفتاح و لمرة واحدة الذي ينتج عنه مفتاح المستخدم لعملية التشفير. تم استخدام نظام الفوضي بنجاح في عملية التشفير في الوسائط المتعددة. اللتشفير الفوضوي سمة جيدة مثل العشوائية الزائفة، والاستجابة للظروف الأولية. تم تصميم و تنفيذ نظام تشفير الفيديو بنجاح ، وأظهرت الاختبارات ونتائج التحليل نجاح طريقة التشفير من حيث السرعة والأمن.


Article
Image Content Verification based on DWT and Chaotic Map Watermarking

Authors: Dina Riadh Alshibani --- Zinah Sadeq
Journal: Iraqi Journal of Science المجلة العراقية للعلوم ISSN: 00672904/23121637 Year: 2018 Volume: 59 Issue: 1C Pages: 607-616
Publisher: Baghdad University جامعة بغداد

Loading...
Loading...
Abstract

Image content verification is to confirm the validity of the images, i.e. . To test if the image has experienced any alteration since it was made. Computerized watermarking has turned into a promising procedure for image content verification in light of its exceptional execution and capacity of altering identification. In this study, a new scheme for image verification reliant on two dimensional chaotic maps and Discrete Wavelet Transform (DWT) is introduced. Arnold transforms is first applied to Host image (H) for scrambling as a pretreatment stage, then the scrambled host image is partitioned into sub-blocks of size 2×2 in which a 2D DWT is utilized on each sub-block to produce corresponding sub-block of DWT coefficients (LL, LH, HL and HH). Meanwhile, watermark image is encrypted using the introduced chaos-based enciphering algorithm. The watermarked image is obtained by updating the approximation coefficients (LH sub-band) of each 2×2 sub-block of DWT coefficients of the host image with the enciphered watermark image bits. Different investigational tests are performed to evaluate the act of the introduced approach. Investigation results clearly present that the proposed approach can detect and localize editing attacks perfectly.


Article
تقويم العناصر الاساسية للخريطة في رسائل الماجستير قسم الجغرافية- كلية الآداب- جامعة ذي قار

Author: م.م.حسام صبار هادي الزيادي
Journal: Univesity of Thi-Qar Journal مجلة جامعة ذي قار العلمية ISSN: 66291818 Year: 2018 Volume: 13 Issue: 2 Pages: 179-196
Publisher: Thi-Qar University جامعة ذي قار

Loading...
Loading...
Abstract

This study aims at identifying how to prepare, design and extract the elements of the map in an optimal way by evaluating the elements of the basic map in the master's thesis prepared in the Department of Geography - Faculty of Arts - Dhi Qar University. Hence the importance of this research in that it provides a brief scientific method for researchers and cartographers about How to follow the cartographic principles of the basic map elements and address the problems of preparing and designing maps in the correct scientific manner. The study found that there are scientific and technical problems in the preparation and design elements of the basic map of the lack of some researchers follow the basic principles of cartography in the design of maps and output in a scientific manner. Where some elements of the map recorded a very low commitment rate by researchers ranged between (6-12%), while other elements achieved the highest commitment rate ranging from (80-96%) in all scientific messages

هدفت هذه الدراسة الى التعرف على كيفية اعداد وتصميم واخراج عناصر الخريطة بالشكل الامثل عن طريق تقييم عناصر الخريطة الاساسية في رسائل الماجستير المعُدة في قسم الجغرافية- كلية الآداب- جامعة ذي قار ومن هنا تأتي اهمية هذا البحث في كونه يقدم اسلوباً علمياً مختصراً للباحثين وراسمي الخرائط حول كيفية اتباع المبادئ الكارتوكرافية لعناصر الخريطة الاساسية ومعالجة مشاكل اعداد وتصميم الخرائط على النحو العلمي الصحيح. وقد توصلت الدراسة الى ان هناك مشاكل علمية و فنية في اعداد وتصميم عناصر الخريطة الاساسية لعدم اتباع بعض الباحثين المبادئ الكارتوكرافية الاساسية عند تصميم الخرائط واخراجها على النحو العلمي الدقيق. حيث سجلت بعض عناصر الخريطة نسبة التزام متدنية جدا من قبل الباحثين تراوحت بين (6-12%), في حين حققت عناصر اخرى اعلى نسبة التزام تراوحت بين (80-96%) في جميع الرسائل العلمية.

Listing 1 - 10 of 20 << page
of 2
>>
Sort by
Narrow your search

Resource type

article (20)


Language

English (13)

Arabic (4)

Arabic and English (1)


Year
From To Submit

2018 (20)