Sorting objects in the conveyor are one of the main objectives in many manufacturing industries. This paper presents the idea to use computervision with a low-resolution camera to sort out different objects in a conv...
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image compression, which is a type of data compression applied to digital images, has been a fundamental research topic for many decades. Recent image techniques produce very large amounts of data, which may make it p...
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ISBN:
(纸本)9781450360920
image compression, which is a type of data compression applied to digital images, has been a fundamental research topic for many decades. Recent image techniques produce very large amounts of data, which may make it prohibitive to storage and communications of image data without the use of compression. However, the traditional compression methods, such as JPEG, may introduce the compression artefact problems. Recently, deep learning has achieved great success in many computervision tasks and is gradually being used in image compression. To solve the compression atrefact problem, in this paper, we present a lossy image compression architecture, which utilizes the advantages of the existing deep learning methods to achieve a high coding efficiency. We design a densely connected autoencoder structure for lossy image compression. Firstly, we design a densely autoencoder structure to get richer feature information from image which can be helpful for compression. Secondly, we design a U-net like network to decrease the distortion caused by compression. Finally, an improved binarizer is adopted to quantize the output of encoder. In low bit rate image compression, experiments show that our method significantly outperforms JPEG and JPEG2000 and can produce a better visual result with sharp edges, rich textures, and fewer artifacts.
image saliency detection helps the computer quickly analyze the surrounding environment, locate the interested objects and extract the salient regions from the background. Conventional image saliency detection algorit...
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ISBN:
(纸本)9781728151021
image saliency detection helps the computer quickly analyze the surrounding environment, locate the interested objects and extract the salient regions from the background. Conventional image saliency detection algorithms usually have high computational complexity, and the detection results seems to be less than satisfactory under complex application circumstances. In this paper, a novel image saliency detection method via color contradistinction and background similarity is proposed, which is effective. In our method, the input image is reconstructed according to block-based compressed sensing for reducing the computational complexity. Then, a weighted local contrast principle and a background similarity calculation framework are designed to obtain two different primary saliency maps. Finally, a weighted fusion strategy is used to combine the two saliency maps to get the final result which has the best detection performance. The experimental results show that the proposed method has good detection performance in terms of accuracy and running time.
Pathological Myopia (PM) is one among the main reason of visual defect in the world. Pathological myopia is associated with decaying changes in the retina. If it remains untreated it may lead to vision loss that can...
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Pathological Myopia (PM) is one among the main reason of visual defect in the world. Pathological myopia is associated with decaying changes in the retina. If it remains untreated it may lead to vision loss that can't be recoverable. The correct diagnosis of pathological myopia will facilitate proper treatment and improve disease management which reduce the growth of the disease. However, it is nearly impossible to scan the whole population. computer-aided diagnosing tools in eye image study will build the method scalable and economical. This paper focuses on the problems of classification of Pathological myopia images and non pathological myopia images and optical disc, fovea detection, localization, lesions (atrophy and detachment) segmentation with 400 samples provided by international Symposium on Biomedical Imaging (ISBI). In this paper, a deep learning method with Convolutional Neural Networks (CNN) is used for classification and U-net model is used for image segmentation which shows that it achieves highly competitive results. (C) 2019 The Authors. Published by Elsevier B.V.
Auto-stereoscopic displays using slanted optical plates have inherent subpixel rasterization compared to the normal 2D displays, and mappings between subpixel positions and multi-view indices even vary according to th...
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Life is often accompanied by the bad weather. In the rainy days, the quality of images and videos acquired will be greatly degraded, affecting human observation and target detection and recognition in computervision ...
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ISBN:
(纸本)9781728151021
Life is often accompanied by the bad weather. In the rainy days, the quality of images and videos acquired will be greatly degraded, affecting human observation and target detection and recognition in computervision systems. In this paper, a single image rain removal algorithm is proposed based on details preservation and background enhancement. We first decompose the rainy image into low-frequency part and high-frequency part by low pass smoothing filter. Then, edge detection is performed on the low-frequency part to extract a mask, which will be used to capture rain-free image details from the high-frequency part. Next, the rain-free image details are superimposed on the low-frequency part to obtain an image without rains but well preserved details. Finally, the dark channel prior method is utilized to further alleviate the blur due to raining. Experiments on both synthetic and real rainy images demonstrate the effectiveness and efficiency of the proposed method.
Automated goal score detection in a football match is a comprehensive work and a challenging task as well. In this paper, we proposed a methodology for goal score detection using key moments of the match. Key moments ...
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Automated goal score detection in a football match is a comprehensive work and a challenging task as well. In this paper, we proposed a methodology for goal score detection using key moments of the match. Key moments in any sports are referred as actions that stimulate excitement or attraction of the audience. So, key moments can be identified using computervision. Extracting one key moment involves many steps to happen at a time and it is necessary to integrate all the steps to identify it as a key moment. It is necessary to identify the goalpost region and track the ball to calculate the goal in football match. The proposed work analyses the various tracking algorithms and finalize MIL (Multiple Instance Learning) tracker technique to track the ball. So, the proposed work identifies the goal post region using sequence of imageprocessing operations, tracks the ball using multiple instance learning tracker and confirms whether the goal has been occurred or not. The results of the proposed work have been shown. (C) 2019 The Authors. Published by Elsevier B.V.
image segmentation technology is the most basic part of computervision and the basis of all other imageprocessing methods. The quality of image segmentation technology will affect the effect of subsequent processing...
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Determining the ripening of a fruit is critical to a farmer, since the fresher the fruit, the better it will be priced and sold. This is also critical to the economy since the ninth (9th) most exported good in the Phi...
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ISBN:
(纸本)9781450372909
Determining the ripening of a fruit is critical to a farmer, since the fresher the fruit, the better it will be priced and sold. This is also critical to the economy since the ninth (9th) most exported good in the Philippines is fruits. The researchers made use of Convolutional Neural Networks through imageprocessing to determine the fruit maturity of Banana (Cavendish), Mango (Carabao), Calamansi/Calamondin, will classify said fruits into three categories for the fruit maturity: pre-matured, matured, over-matured. Of the sixty fruits used, twenty pieces of which will be used to gather data, starting from their very unripe/pre-matured stage up-to the over-matured stage. This will approximately take one (1) to two (2) weeks if stored in room temperature. The total data gathered would be 3681 pieces for Calamansi (Philippine lime);3270 pieces for Banana (Cavendish);and 5706 pieces for Mango (Carabao). The model is written in Spyder in Anaconda Navigator, which will be applying Tensorflow-GPU and Keras. These will also be coupled with CUDA and CUDDN to process the data and determine the results. Two total experiments will be executed - one for the Red-Green-Blue (RGB) dataset, and one for the greyscale dataset.
In the last few years, generative adversarial networks (GAN) have shown tremendous potential for a number of applications in computervision and related fields. With the current pace of progress, it is a sure bet they...
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ISBN:
(纸本)9781728111988
In the last few years, generative adversarial networks (GAN) have shown tremendous potential for a number of applications in computervision and related fields. With the current pace of progress, it is a sure bet they will soon be able to generate high-quality images and videos, virtually indistinguishable from real ones. Unfortunately, realistic GAN-generated images pose serious threats to security, to begin with a possible flood of fake multimedia, and multimedia forensic countermeasures are in urgent need. In this work, we show that each GAN leaves its specific fingerprint in the images it generates, just like real-world cameras mark acquired images with traces of their photo-response non-uniformity pattern. Source identification experiments with several popular GANs show such fingerprints to represent a precious asset for forensic analyses.
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