Dheyaa Ahmed Ibrahim

Dr. Dheyaa Ahmed Ibrahim


Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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20 December 2021 in Applied Sciences
Verified
Journal Article
Open access
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DZDilovan Asaad Zebari
Dilovan Asaad Zebari
DIDheyaa Ahmed Ibrahim
Dheyaa Ahmed Ibrahim
Diyar Qader ZeebareeDiyar Qader Zeebaree
Diyar Qader Zeebaree
Mazin Abed MohammedMazin Abed Mohammed
Mazin Abed Mohammed
HHHabibollah Haron Haron
Habibollah Haron Haron
RMRytis Maskeliūnas
Rytis Maskeliūnas
Breast cancer detection using mammogram images at an early stage is an important step in disease diagnostics. We propose a new method for the classification of benign or malignant breast cancer from mammogram images. Hybrid thresholding and the machine learning method are used to derive the region of interest (ROI). The derived ROI is then separated into five different blocks. The wavelet transform is applied to suppress noise from each produced block based on BayesShrink soft thresholding by capturing high and low frequencies within different sub-bands. An improved fractal dimension (FD) approach, called multi-FD (M-FD), is proposed to extract multiple features from each denoised block. The number of features extracted is then reduced by a genetic algorithm. Five classifiers are trained and used with the artificial neural network (ANN) to classify the extracted features from each block. Lastly, the fusion process is performed on the results of five blocks to obtain the final decision. The proposed approach is tested and evaluated on four benchmark mammogram image datasets (MIAS, DDSM, INbreast, and BCDR). We present the results of single- and double-dataset evaluations. Only one dataset is used for training and testing in the single-dataset evaluation, whereas two datasets (one for training, and one for testing) are used in the double-dataset evaluation. The experiment results show that the proposed method yields better results on the INbreast dataset in the single-dataset evaluation, whilst better results are obtained on the remaining datasets in the double-dataset evaluation. The proposed approach outperforms other state-of-the-art models on the Mini-MIAS dataset.

1 May 2022 in Expert Systems
Verified
Journal Article
Closed access
DIDheyaa Ahmed Ibrahim
Dheyaa Ahmed Ibrahim
DZDilovan Asaad Zebari
Dilovan Asaad Zebari
HMHussam J Mohammed
Hussam J Mohammed
Mazin Abed MohammedMazin Abed Mohammed
Mazin Abed Mohammed

28 September 2022 in Mathematics
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HMHussam J Mohammed
Hussam J Mohammed
SAShumoos Al-Fahdawi
Shumoos Al-Fahdawi
AAAlaa S. Al-Waisy
Alaa S. Al-Waisy
DZDilovan Asaad Zebari
Dilovan Asaad Zebari
DIDheyaa Ahmed Ibrahim
Dheyaa Ahmed Ibrahim
JKJungeun Kim
Jungeun Kim
Person re-identification has become an essential application within computer vision due to its ability to match the same person over non-overlapping cameras. However, it is a challenging task because of the broad view of cameras with a large number of pedestrians appearing with various poses. As a result, various approaches of supervised model learning have been utilized to locate and identify a person based on the given input. Nevertheless, several of these approaches perform worse than expected in retrieving the right person in real-time over multiple CCTVs/camera views. This is due to inaccurate segmentation of the person, leading to incorrect classification. This paper proposes an efficient and real-time person re-identification system, named ReID-DeePNet system. It is based on fusing the matching scores generated by two different deep learning models, convolutional neural network and deep belief network, to extract discriminative feature representations from the pedestrian image. Initially, a segmentation procedure was developed based on merging the advantages of the Mask R-CNN and GrabCut algorithm to tackle the adverse effects caused by background clutter. Afterward, the two different deep learning models extracted discriminative feature representations from the pedestrian segmented image, and their matching scores were fused to make the final decision. Several extensive experiments were conducted, using three large-scale and challenging person re-identification datasets: Market-1501, CUHK03, and P-DESTRE. The ReID-DeePNet system achieved new state-of-the-art Rank-1 and mAP values on these three challenging ReID datasets.

28 August 2023 in Applied Sciences
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JSJwan Najeeb Saeed
Jwan Najeeb Saeed
AAAdnan Mohsin Abdulazeez
Adnan Mohsin Abdulazeez
DIDheyaa Ahmed Ibrahim
Dheyaa Ahmed Ibrahim
Deep data-driven methodologies have significantly enhanced the automatic facial beauty prediction (FBP), particularly convolutional neural networks (CNNs). However, despite its wide utilization in classification-based applications, the adoption of CNN in regression research is still constrained. In addition, biases in beauty scores assigned to facial images, such as preferences for specific, ethnicities, or age groups, present challenges to the effective generalization of models, which may not be appropriately addressed within conventional individual loss functions. Furthermore, regression problems commonly employ L2 loss to measure error rate, and this function is sensitive to outliers, making it difficult to generalize depending on the number of outliers in the training phase. Meanwhile, L1 loss is another regression-loss function that penalizes errors linearly and is less sensitive to outliers. The Log-cosh loss function is a flexible and robust loss function for regression problems. It provides a good compromise between the L1 and L2 loss functions. The Ensemble of multiple loss functions has been proven to improve the performance of deep-learning models in various tasks. In this work, we proposed to ensemble three regression-loss functions, namely L1, L2, and Log-cosh, and subsequently averaging them to create a new composite cost function. This strategy capitalizes on the unique traits of each loss function, constructing a unified framework that harmonizes outlier tolerance, precision, and adaptability. The proposed loss function’s effectiveness was demonstrated by incorporating it with three pretrained CNNs (AlexNet, VGG16-Net, and FIAC-Net) and evaluating it based on three FBP benchmarks (SCUT-FBP, SCUT-FBP5500, and MEBeauty). Integrating FIAC-Net with the proposed loss function yields remarkable outcomes across datasets due to its pretrained task of facial-attractiveness classification. The efficacy is evident in managing uncertain noise distributions, resulting in a strong correlation between machine- and human-rated aesthetic scores, along with low error rates.

30 June 2019 in Journal of Southwest Jiaotong University
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HRHussam Hatem Abdul Razaq
Hussam Hatem Abdul Razaq
AGAyedh Shahadha Gaser
Ayedh Shahadha Gaser
Mazin Abed MohammedMazin Abed Mohammed
Mazin Abed Mohammed
EYEsam Taha Yassen
Esam Taha Yassen
Salama A. MostafaSalama A. Mostafa
Salama A. Mostafa
RFRabah N. Farhan
Rabah N. Farhan
Observation has been made that in Arab countries, students find it challenging to learn to program in a different language other than Arabic. Existing literature contains only a few Arabic programming languages, most of which have never been or have partially been executed. In this article, a novel Arabic programming language known as Alf..Eih language is proposed. The proposed programming language is to be used in teaching pupils and schoolchildren in Arabic countries programming. This Arabic Programming language converts the Arabic language presumed to code in (C++ language) with its implementation. After the code written in Arabic passes through the first three stages of compiler (lexical, syntax and semantic), the final phase converts code to (C++). Alf..Eih language covers many of the directives in the presumed Arabic Language such as, header file, functions, if condition, loops and etc.