- There are systems developed to assist the visually impaired in grocery shopping. The developed systems require physical work from the users, wireless connections and products database to obtain the products informat...
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-In a recent published work we proposed a technique to recover the absolute phase maps of three sets of fringe patterns with selected wavelengths. It is demonstrated that the absolute phase maps can be unwrapped from ...
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The biological characteristics of human visual processing can be investigated through the study of optical illusions and their perception, giving rise to intuitions that may improve computervision to match human perf...
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ISBN:
(纸本)9781509028962
The biological characteristics of human visual processing can be investigated through the study of optical illusions and their perception, giving rise to intuitions that may improve computervision to match human performance. Geometric illusions are a specific subfamily in which orientations and angles are misperceived. This paper reports quantifiable predictions of the degree of tilt for a typical geometric illusion called Cafe Wall, in which the mortar between the tiles seems to tilt or bow. Our study employs a common bioplausible model of retinal processing and we further develop an analytic processing pipeline to quantify and thus predict the specific angle of tilt. We further study the effect of resolution and feature size in order to predict the different perceived tilts in different areas of the fovea and periphery, where resolution varies as the eye saccades to different parts of the image. In the experiments, several different minimal portions of the pattern, modeling monocular and binocular foveal views, are investigated across multiple scales, in order to quantify tilts with confidence intervals and explore the difference between local and global tilt.
computervision involves imageprocessing which has the use of various algorithms for text extraction as an integral part. This paper delves into the use of filtering based thresholding on HSV plane which serves as a ...
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ISBN:
(纸本)9781467391979
computervision involves imageprocessing which has the use of various algorithms for text extraction as an integral part. This paper delves into the use of filtering based thresholding on HSV plane which serves as a common tool for text extraction in manuscripts as well as inscriptions. The basic and simple technique proposed has provided positive results for various images as compared to the other commonly used complex algorithms. The paper also involves a comparison with various other algorithms which is the nick, niblack, Messalodi, Otsu, Gllavata, Kim, Lee, Color Clustering Technique and FastICA helping us understand the advantages that this algorithm presents.
Artificial Intelligence or AI is a subfield of computer science, which can be defined as the intelligence exhibited by a machine or a software having a remarkable impact on the field of biology and medicine. Imaging, ...
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ISBN:
(纸本)9781509006731
Artificial Intelligence or AI is a subfield of computer science, which can be defined as the intelligence exhibited by a machine or a software having a remarkable impact on the field of biology and medicine. Imaging, on the other hand has become an essential component of many fields in medicine, biomedical applications, biotechnology and laboratory research by which images are processed and analysed. Putting together AI and imaging, the tools and techniques of artificial intelligence are useful for solving many biomedical problems and using a computer based equipped hardware software application for understanding images, researchers and clinicians can enhance their ability to study, diagnose, monitor, understand and treat medical disorders. Therefore the main idea behind this research paper is to focus on understanding the artificial intelligence, its concepts and various models available for the segmentation(or classification) of medical images, its applications, advantages and disadvantages and results and more.
Plant seeds can be preserved for a long time. Longterm storage of seeds is very important for the continuity of life. Seed storage time heavily depends on plant species, seed maturation degree, preliminary processing,...
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ISBN:
(纸本)9781509023509
Plant seeds can be preserved for a long time. Longterm storage of seeds is very important for the continuity of life. Seed storage time heavily depends on plant species, seed maturation degree, preliminary processing, seed germination value and the moisture content. Environmental conditions such as temperature of the storage place, humidity, and light, or infestation of parasitic living beings;insects and fungus are some other first order parameters responsible for the seed storage time, too. Germinated and bug infested seeds are neither suitable for food consumption nor for cultivation. Automated discrimination of these situations with respect to healthy seeds requires an algorithm to be applied in the sense of seed image classification. This paper draws some imageprocessing related steps to be applied for seed images which discriminate the germinated or bug infested ones. The problem itself stems from the seed type, the reason why some seed variations like beans show close texture to germinated sprouts. The experiments are handled by using some sort of seed types readily available in the seedsman such as lentil, chickpea, bean, corn, barley, cowpea, and wheat seeds. Each of the training and test pictures is obtained in an uncontrolled environment without the care of light and image acquisition details that makes the problem tougher. A brand-new database namely ITUSEED-II has already been constructed. The analysis of database related to healthy and badly conditioned seeds using a new computervision method namely Relational Bit Operator (RBO) is presented in this paper.
computervision is one of the most important branches in modern industrial technology. image classification plays an important role in computervision since it utilizes the most advance technique in this area. However...
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ISBN:
(纸本)9781467380751
computervision is one of the most important branches in modern industrial technology. image classification plays an important role in computervision since it utilizes the most advance technique in this area. However, most image classification methods only use the SIFT feature for further processing, which hinders the rich useful low-level image attributes to be captured. This paper proposes a maximal margin feature mapping framework that incorporates basic descriptors in the recognition system. This is fulfilled by optimizing an objective function that minimizes intra-class distance and maximizes interclass distance as well as the reconstruction error. An efficient optimization algorithm is proposed to learn the transformation matrix. Experiments on three publicly available datasets are conducted. The preliminary results show the effectiveness of the proposed approach.
- Non-local mean (NLM) algorithm has been implemented effectively in MRI denoising and is always limited by its computational complexity. To reduce the computational burden of NLM in 3D MRI dataset, in this paper, we ...
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image matching is a classic technique in computervision. However, the traditional local invariant features image matching algorithm has two problems, narrow scale range and long time consuming. Aiming at these proble...
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ISBN:
(纸本)9781509013456
image matching is a classic technique in computervision. However, the traditional local invariant features image matching algorithm has two problems, narrow scale range and long time consuming. Aiming at these problems, we proposed a fast image matching algorithm with the aid of improved local invariant features based on Locality-Sensitive Hashing. Firstly, by building simple Gaussian pyramid and achieving FAST keypoint detection, keypoints are extracted from the reference image and the candidate matching image. Then Fast Retina Keypoint feature descriptor is calculated and weighted. Furthermore, the high-dimensional data is mapped to a low dimensional space and hash indexes are built through the local sensitive hashing algorithm in aiming of finding the approximate nearest neighbor. The experimental results in different datasets indicate that the improved algorithm achieves real-time processing in image matching, and has better robustness and shorter processing time than most classical methods.
Face detection is the active research area in the field of computervision because it is the first step in various applications like face recognition, military intelligence and surveillance, human computer interaction...
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Face detection is the active research area in the field of computervision because it is the first step in various applications like face recognition, military intelligence and surveillance, human computer interaction etc. Face detection algorithms are computationally intensive, which makes it is difficult to perform face detection task in real-time. We can overcome the processing limitations of the face detection algorithms by offloading computation to the graphics processing unit (GPU) using NVIDIAs Compute Unified Device Architecture (CUDA). In this paper, we have developed a GPU based implementation of robust face detection based on Viola Jones face detection algorithm. To verify our work, we compared our implementation with traditional CPU implementation for same algorithm. (C) 2016 The Authors. Published by Elsevier B.V.
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