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Currently the digital images are used in various areas like medical, fashion, architecture, face recognition, finger print recognition and bio metrics. Recently the CBIR reduced the semantic gap between the low visual features and high level image semantics. In this paper we describe a novel framework for performing content-based image retrieval using Back Propagation Neural Network. Our method focuses on performing category search, though it could easily be ex-tended to other types of searches, and does not require relevance feedback in order to perform reasonably. It also emphasizes the importance of utilizing information collected from the sets of image database in medical system.
International Journal of Science Technology & Engineering
Large database of images in the field of medicine requires proper systems that will help in accurate diagnostics and their efficient management. Content based medical image retrieval is a system that helps to browse, explore, find, and retrieve images similar to the query image with minimal user input. In this paper we propose a system that will retrieve all medical images that matches the query image. Shape and texture features are extracted from the pre-processed medical images for creating the medical database. Once the medical database is created, the features of the query image are extracted and are used by the neural network to train it. Euclidean distance between the database features and the query features are computed, ranked and we label the relevant images from the initial retrieved images. Then the feed forward back propagation neural network is used finally to retrieve the similar medical images. We have taken X-ray images of hand, foot, chest, head and ankle. The precision and recall values for the retrieval system using only texture features, using only shape features and using combined texture and shape features are calculated and compared.
International Journal of Advances in Applied Sciences
Medical image classification and retrieval systems have been finding extensive use in the areas of image classification according to imaging modalities, body part and diseases. One of the major challenges in the medical classification is the large size images leading to a large number of extracted features which is a burden for the classification algorithm and the resources. In this paper, a novel approach for automatic classification of fundus images is proposed. The method uses image and data pre-processing techniques to improve the performance of machine learning classifiers. Some predominant image mining algorithms such as Classification, Regression Tree (CART), Neural Network, Naive Bayes (NB), Decision Tree (DT) K-Nearest Neighbor. The performance of MCBIR systems using texture and shape features efficient. . The possible outcomes of a two class prediction be represented as True positive (TP), True negative (TN), False Positive (FP) and False Negative (FN).
International Journal of Healthcare Information Systems and Informatics, 2000
Content-based image retrieval (CBIR) makes use of image features, such as color, texture or shape, to index images with minimal human intervention. Content-based image retrieval can be used to locate medical images in large databases. In this paper, the fundamentals of the key components of content-based image retrieval systems are introduced first to give an overview of this area. Then, a case study which describes the methodology of a CBIR system for retrieving human brain magnetic resonance images, is presented. The proposed method is based on Adaptive Neuro-fuzzy Inference System (ANFIS) learning and could classify an image as normal and tumoral. This research uses the knowledge of CBIR approach to the application of medical decision support and discrimination between the normal and abnormal medical images based on features. The experimental results indicate that the proposed method is reliable and has high image retrieval efficiency.
Journal of Physics: Conference Series
Content-based Image Retrieval (CBIR) aids radiologist to identify similar medical images in recalling previous cases during diagnosis. Although several algorithms have been introduced to extract the content of the medical images, the process is still a challenge due to the nature of the feature itself where most of them are extracted in low level form. In addition to the dimensionality reduction problem caused by the low-level features, current features are also insufficient to convey the semantic meaning of the images. This paper reviews the recent works in CBIR that attempts to reduce the semantic gap in extracting the features from medical images, precisely for mammogram images. Approaches such as the use of relevance feedback, ontology as well as machine learning algorithms are summarized and discussed.
Because of the numerous application of Content-based image retrieval (CBIR) system in various areas, it has always remained a topic of keen interest by the researchers. Fetching of the most similar image from the complete repository by comparing it to the input image in the minimum span of time is the main task of the CBIR. The purpose of the CBIR can vary from different types of requirements like a diagnosis of the illness by the physician, crime investigation, product recommendation by the e-commerce companies, etc. In the present work, CBIR is used for finding the similar patients having Breast cancer. Gray-Level Co-Occurrence Matrix along with histogram and correlation coefficient is used for creating CBIR system. Comparing the images of the area of interest of a present patient with the complete series of the image of a past patient can help in early diagnosis of the disease. CBIR is so much effective that even when the symptoms are not shown by the body the disease can be diagnosed from the sample images.
… 2009, EUROCON'09. …, 2009
In the past few years, immense improvement was obtained in the field of content-based image retrieval (CBIR). Nevertheless, existing systems still fail when applied to medical image databases. Simple feature-extraction algorithms that operate on the entire image for characterization of color, texture, or shape cannot be related to the descriptive semantics of medical knowledge that is extracted from images by human experts.
Journal of Clinical Medicine, 2019
Medical-image-based diagnosis is a tedious task‚ and small lesions in various medical images can be overlooked by medical experts due to the limited attention span of the human visual system, which can adversely affect medical treatment. However, this problem can be resolved by exploring similar cases in the previous medical database through an efficient content-based medical image retrieval (CBMIR) system. In the past few years, heterogeneous medical imaging databases have been growing rapidly with the advent of different types of medical imaging modalities. Recently, a medical doctor usually refers to various types of imaging modalities all together such as computed tomography (CT), magnetic resonance imaging (MRI), X-ray, and ultrasound, etc of various organs in order for the diagnosis and treatment of specific disease. Accurate classification and retrieval of multimodal medical imaging data is the key challenge for the CBMIR system. Most previous attempts use handcrafted feature...
TJPRC, 2013
Nowadays, automatic defects detection in MRI (Magnetic Resonance image) is very important in many diagnostic and therapeutic applications. This paper introduces a Novel automatic brain tumor detection method to determine any abnormality in brain tissues. Here, a number of features which represent a description of brain tissues are extracted. The retrieval of images based on visual features technique called Content-Based Image Retrieval (CBIR) system is used. Basically, this system goal is to support image retrieval based on content properties (e.g., shape, color, texture), usually encoded into feature vectors. In this paper, each image that is stored in the database has its features extracted and compared to the features of the query image. The program output is the image that very closes matching the input image and its description. The program efficiency with respect to good description for a new input image was tested. It gives efficiency approximated 98% .
RePEc: Research Papers in Economics, 2020
According to western observers, slavery was almost universal in Africa by the end of the slave trade era. I investigate the extent to which the international slave trades transformed the institutions of slavery in Africa. I use newly-developed data on travel time to estimate the inland reach of international slave demand. I find that societies in decentralized catchment zones adopted slavery to defend against further enslavement. More generally, I find that the international slave trades incentivized the evolution of aristocratic slave regimes characterized by slavery as a property system, polygyny as a family organization, inheritance of property within the nuclear family and hereditary succession in local politics. I discuss the implications for literatures on long-term legacies in African development.
Una revisión de los términos que forman el título se hace necesaria, si se considera, por un lado, la multiplicidad de significados que a ellos se les refiere y por otro, si se toma en cuenta que constituye, en su conjunto, el antecedente fundamental del proceso de investigación; esto es, el objetivo que guía y da cuerpo al tema central del presente trabajo.
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Fresenius' Journal of Analytical Chemistry, 2000
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