• 3DMPE: 3D Multi-Perspective Embedding - 3DMPE
    πŸ“… 2019-12-18✍️ Md. Rahat-uz-Zaman, Vahan Huroyan, Stephen KobourovπŸ“š International Conference on 3D Vision 2024🎯 article
      We describe a 3-Dimensional Multi-Perspective Embedding (3DMPE) approach for 3D point cloud reconstruction. The algorithm takes as input two or more 2D snapshots, i.e., 2D subspace projections of an unknown 3D point cloud, along with a correspondence between the points, although not all points are required to be present in all projections. Different from current state-of-the-art algorithms that require training on many examples and perform well mostly on those types of objects that were seen in training, ours is an optimization-based (unsupervised learning) algorithm that solves a simultaneous multi-perspective optimization problem and works well on any type of object. We demonstrate the algorithm's performance on multiple datasets using three quality measures: Earth Mover distance, Chamfer distance, and ROA. We quantitatively evaluate the scalability and robustness of 3DMPE when varying the number of input projections and the size of the input data. Finally, we demonstrate the robustness of 3DMPE with various noise regimes, including incorrect correspondences between the points and incorrect distance measurements.
    • Prediction of Apple Leaf Diseases Using Multiclass Support Vector Machine
      πŸ“… 2021-02-01✍️ Soarov Chakraborty, Shourav Paul, Md. Rahat-uz-ZamanπŸ“š 2021 2Nd international conference on robotics, electrical and signal processing techniques (ICREST)🎯 article
        Every year apple yield has been affected by Black rot and Cedar apple rust. It has a significant effect on both the apple industry and the country's economy. Here, we recommend a system to detect diseases from the infected apple leaves by combining machine learning and image processing principles. This approach can classify both infected and non-infected apple leaves efficiently. The identification is started by preprocessing the image using several image processing techniques, including the Otsu thresholding algorithm and histogram equalization. Using the image segmentation region of the infected part separates, and a Multiclass SVM recognizes the disease type from the original leaf image among 500 images with 96% accuracy. It also demonstrates the percentage of the total infected area of that diseased apple leaf image.
      • Visualizing Interaction Networks and Evidence in Biomedical Corpora - Blobviz
        πŸ“… 2023-06-14✍️ Enrique Noriega-Atala, Md. Rahat-Uz-Zaman, Ruchika Bhat, Mladen Jergovic, Stephen G. Kobourov, Janko Nikolich-ZugichπŸ“š Pacific (formerly Asia-Pacific APVIS) Visualization Symposium🎯 article
          The abundance of scientific articles published and indexed in publicly accessible repositories has spurred the research and development of automated information extraction systems. The output of such systems can be used to assemble large networks capturing the understanding of mechanistic pathways and their interactions as represented in the underlying body of research.We describe a system designed to help researchers search, visualize and interact with biological networks derived via information extraction tools. As input, the system takes a dataset of biological and biochemical interactions automatically generated by an information extraction system and provides an interface designed to search, visualize and interact with the data. The usage paradigm consists of identifying a starting point for a search, then using the data’s network structure by incrementally exploring the immediate neighborhood of the elements displayed by the system.Our system differs from prior work as it leverages both the network structure in the data and the natural language text backing those connections: every connection displayed is traceable back to the documents and phrases in the corpus that support that specific piece of information. We also present two case studies with immunobiology researchers using the system to find previously unknown relationships between biological entities. While the evidence suggesting these relationships already existed, it was scattered across the literature, and existing specialized web databases and domain-search engines could not find it. The system is open-source, with the code publicly available on GitHub.
        • A Multi-Modal Human Machine Interface for Controlling a Smart Wheelchair
          πŸ“… 2019-12-14✍️ Saifuddin Mahmud, Xiangxu Lin, Jong-Hoon Kim, Hasib Iqbal, MD Rahat-Uz-Zaman, Sakib Reza, M Asifur RahmanπŸ“š IEEE 7th Conference on Systems, Process and Control (ICSPC), 2019🎯 article
            As the number of disabled people all over the world is increasing very fast, the role of an electric wheelchair is becoming crucial to improve the mobility for them. Independent mobility is a vital aspect of self-respect and plays an important role in the life of a disabled person. The smart wheelchair is an endeavor to provide an self-supporting mobility to those people who are not able to move freely. Typical electric powered wheelchairs are usually controlled by the traditional joysticks which cannot fulfill the needs of a person who has motor disabilities and some specific types of disabilities like paralysis who can only move their eyes. This paper aims to develop a multi-modal human machine interface for the larger domain of disabled persons to control the wheelchair efficiently. The interface comprises joystick, smart hand-glove, head movement tracker and eye tracker. The system presented in this paper can support a wide variety of users with different types of disabilities.
          • Agglomerative Clustering of Handwritten Numerals to Determine Similarity of Different Languages
            πŸ“… 2019-12-18✍️ Md. Rahat-uz-Zaman, Shadmaan HyeπŸ“š 22nd International Conference on Computer and Information Technology (ICCIT), 2019🎯 article
              Handwritten numerals of different languages have various characteristics. Similarities and dissimilarities of the languages can be measured by analyzing the extracted features of the numerals. Handwritten numeral datasets are available and accessible for many renowned languages of different regions. In this paper, several handwritten numeral datasets of different languages are collected. Then they are used to find the similarity among those written languages through determining and comparing the similitude of each handwritten numerals. This will help to find which languages have the same or adjacent parent language. Firstly, a similarity measure of two numeral images is constructed with a Siamese network. Secondly, the similarity of the numeral datasets is determined with the help of the Siamese network and a new random sample with replacement similarity averaging technique. Finally, an agglomerative clustering is done based on the similarities of each dataset. This clustering technique shows some very interesting properties of the datasets. The property focused in this paper is the regional resemblance of the datasets. By analyzing the clusters, it becomes easy to identify which languages are originated from similar regions.
            • Audio Future Block Prediction with Conditional Generative Adversarial Network
              πŸ“… 2019-12-28✍️ Md. Rahat-uz-Zaman, Shadmaan Hye, Mahmudul HasanπŸ“š 3rd International Conference on Electrical, Computer & Telecommunication Engineering, 2019🎯 article
                Signal processing is a vast subfield of electrical and computer science where audio signal processing has secured a remarkable position to restore corrupted or missing audio blocks. However, generating possible future audio block from the previous audio block is still a new idea that can help to reduce both audio noise and partially missing an audio segment. In this paper, a generative adversarial network (GAN) along with a pipeline is proposed for the prediction of possible audio after an input audio sequence. The proposed model uses short-time Fourier transformation of audio to make it an image. The image is then fed to a conditional GAN to predict the output image. After that, Inverse short-time Fourier transform is then applied to that predicted image, generating the predicted audio sequence. For a small audio sequence prediction, the proposed methodology is quite fast, robust and has achieved a loss of 0.43. So it is may work well if deployed on a voice call and broadcasting applications.
              • Extraction of Sequence from Bangla Handwritten Numerals and Recognition Using LSTM
                πŸ“… 2020-06-07✍️ Shadmaan Hye, Md. Rahat-uz-Zaman, M. A. H. AkhandπŸ“š IEEE Region 10 Symposium (TENSYMP), 5-7 June 2020, Dhaka, Bangladesh🎯 article
                  In the promising era of Handwritten Numeral Recognition (HNR), despite Bangla being one of the major languages in the Indian subcontinent, fewer explorations have been done on Bangla numerals compared to other languages. Among the existing methods, several convolutional neural network (CNN) based method outperformed other methods. But CNN always gets confused with some specific Bangla numerals due to the similarity of shape and size of different numerals. The main purpose of this study is to expand Bangla HNR by considering a novel methodology with a Long Short-Term Memory (LSTM) network. In the proposed method, images are thinned and a sequence is extracted. These extracted sequences are used to classify using LSTM network. Both single-layer LSTM and Deep LSTM models are trained and performance tested on a benchmark dataset with a large number of samples. On the other hand, traditional CNN is also trained for better understanding. Experimental outcomes revealed that the proposed LSTM based method outperformed CNN with remarkable accuracy for the similar shaped numerals. Finally, the proposed method achieved a test set recognition rate of 98.03% which is better than or competitive to other prominent existing methods.
                • VISION-IT: A Novel Approach for Blind to Help hear what is in Front
                  πŸ“… 2018-06-27✍️ Md. Rahat-uz-Zaman, Shadmaan HyeπŸ“š 2020 24th International Conference on Computer and Information Technology (ICCIT)🎯 article