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检索条件"任意字段=Conference on Image Processing - Algorithms and Systems XI"

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Proceedings of the 1996 IEEE International conference on Acoustics, Speech, and Signal processing, ICASSP. Part 6 (of 6)

Proceedings of the 1996 IEEE International Conference on Aco...

引用

Proceedings of the 1996 IEEE International conference on Acoustics, Speech, and Signal processing, ICASSP. Part 1 (of 6)

The proceedings contains 138 papers from the 1993 IEEE International conference on Acoustic and Speech Signal processing. The topics covered include: acoustic wave propagation and transmission, sonar beamforming, acoustic arrays, interference suppression, acoustic imaging, digital signal processing, speech segmentation, radar imaging, digital filters, phoneme recognition, signal decoding and encoding, motion estimation, dynamic programming, neural network applications, learning systems, image processing, object recognition, system identification, Markov models, radar tracking, adaptive algorithms and signal localization.

关键词： Acoustic signal processing

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Automatic glare removal in reflectance imagery of the uterine cervix

Automatic glare removal in reflectance imagery of the uterin...

引用

Medical Imaging 2005 conference

作者： Lange, H STI Med Syst Honolulu HI 96813 USA

ISBN: (纸本)0819457213

Colposcopy is a diagnostic method used to detect cancer precursors and cancer of the uterine cervix. Computer-Aided-Diagnosis (CAD) for colposcopy is a new field in medical image processing. Colposcopists analyze glare (glint or specular reflection) patterns on the cervix to assess the surface contour (3D topology) of lesions, an important feature used to evaluate lesion severity. However, glare in the imagery presents major problems for automated image analysis systems. Glare eliminates all information in affected pixels and can introduce artifacts in feature extraction algorithms, such as acetowhite region detection. Although cross-polarization filters can be used to eliminate glare, the reality is that we have to deal with glare when we want to use existing cervical image databases or use an instrument that does not provide cross-polarized imagery. Here., we present the details and preliminary results of a glare removal algorithm for RGB color images of the cervix that can be used as a pre-processing step in CAD systems. The algorithm can be extended to multispectral and hyperspectral imagery. The basic approach of the algorithm is to extract a feature image from the RGB image that provides a good glare to background ratio, to detect the glare regions in the feature image, to extend the glare regions to cover all pixels that have been affected by the glare. and to remove the glare in the affected regions by filling in an estimate of the underlying image features. In our current implementation we use the green (G) image component as the feature image, given its high glare to background ratio and simplicity of calculation. Glare regions are either detected as saturated regions or small high contrasted bright regions. Saturated regions are detected using an adaptive thresholding method. Small high contrasted bright regions are detected using morphological top hat filters with different sizes and thresholds. The full extent of the glare regions is estimated by using

关键词： glare removal glint specular reflection automated image analysis uterine cervical cancer colposcopy

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Research on Mining Car Target Recognition Method Based on Machine Learning algorithms

Research on Mining Car Target Recognition Method Based on Ma...

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2024 International conference on Remote Sensing, Mapping, and image processing, RSMIP 2024

作者： Fu, Yuwen Chen, Bei Zhang, Yanwen Liu, Haoguang Sun, Yanshi Wang, Zhoujie Chinese Flight Test Establishment Xi'an China

ISBN: (纸本)9781510680012

In the process of acceptance measurement based on drone point cloud data, the mining cars in the open-pit mining area will generate a large number of pseudo terrain points in the 3D point cloud modeling process. If they are not extracted and removed, the accuracy of acceptance measurement will be seriously reduced. Therefore, how to accurately identify and extract mining car points from 3D point cloud data is the main technical issue for high-precision acceptance of mining sites based on unmanned aerial car oblique photogrammetry technology. Therefore, this article proposes a machine learning algorithm based method for extracting open-pit mining car point sets, which can effectively solve the problem of reduced acceptance accuracy caused by the existence of mining car point sets, thereby improving the accuracy of acceptance measurement. This provides important technical support for open-pit mining site acceptance measurement based on drone photogrammetry technology. © 2024 SPIE.

关键词： Antennas

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Fast double-parallel image processing based on FPGA

Fast double-parallel image processing based on FPGA

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IEEE International conference on Vehicular Electronics and Safety

作者： Li, Ye Yao, Qingming Tian, Bin Xu, Wencong State Key Lab. of Intelligent Control and Management of Complex Systems Institute of Automation Chinese Academy of Sciences Beijing 100190 China School of Mechanical Electrical and Information Engineering Shandong University Weihai 264209 China

ISBN: (纸本)9781457705762

Due to FPGA's flexibility and parallelism, it is popular for accelerating image processing. In this paper, a double-parallel architecture based on FPGA has been exploited to speed up median filter and edge detection tasks, which are essential steps during image processing. The double-parallel scheme includes an image-level parallel and an operation-level parallel. The image-level parallel is a high-level parallel which divides one image into different parts and processes them concurrently. The operation-level parallel, which is embedded in each image-level parallel thread, fully explores every parallel part inside the concrete algorithms. The corresponding design is based on a DE2 Development Board which contains a CYCLONE II FPGA device. Meanwhile, the same task has also been implemented on PC and DSP for performance comparison. Despite the fact that operating frequencies of used PC and DSP are much higher than FPGA's, FPGA costs less time per computed image than both of them. By taking advantage of the double-parallel technique, the speed/frequency ratio of FPGA is 202 times faster than PC and 147 times faster than DSP. Finally, a detailed discussion about different platforms is conducted, which analyzes advantages and disadvantages of used computing platforms. This paper reveals that the proposed double-parallel scheme can dramatically speed up image processing methods even on a low-cost FPGA platform with low frequency and limited resources, which is very meaningful for practical applications. © 2011 IEEE.

关键词： Field programmable gate arrays (FPGA)

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Fuzzy Morphological processing Algorithm of Blood image 25

Fuzzy Morphological Processing Algorithm of Blood Image

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25th IEEE International conference of Young Professionals in Electron Devices and Materials, EDM 2024

作者： Turgunov, Abrorjon M. Narzullaev, Temur N. Matyakubov, Marks Ya. Payzieva, Munira T. Kamolova, Sevara J. Rakhmonova, Nilufar N. Department of Algorithms and Mathematical Modeling Tashkent University of Information Technologies named after Muhammad al-Khwarizmi Tashkent Uzbekistan Tashkent University of Information Technologies named after Muhammad al-Khwarizmi Tashkent Uzbekistan

ISBN: (纸本)9798350389234

This article, a morphological image processing algorithm is developed for early detection of viral hepatitis from microscopic blood images. It is mentioned that it can be used to accurately determine each boundary detail in the fuzzy morphological processing of the gray image of the blood image. Boundary detection leads to higher recognition results in neural network training. Compared to the work of a number of scholars, our method offers such performance, but it offers improved dynamics and flexibility in the formulation of linguistic boundary criteria, which can be a leading factor in the design of image processing systems with dynamic and flexible rules, such as Type 2 allows fuzzy rules, which offers an interesting alternative to currently common deep learning applications. The validated experimental results show the reliability of the modified method compared to the Chaira method. Mean, entropy and standard deviation were calculated. It turned out to be higher than the values of the Chaira method. © 2024 IEEE.

关键词： Neural networks

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An efficient image watermarking scheme using the Laplacian Pyramid based on projection

An efficient image watermarking scheme using the Laplacian P...

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2017 International conference on Recent Advances in Signal processing, Telecommunications and Computing, SigTelCom 2016

作者： Nguyen, Sy C. Kha, Ha Hoang Nguyen, Hoang M. Faculty of Electrical and Electronics Engineering Ho Chi Minh City University of Technology VNU-HCM Viet Nam Faculty of Management Information Systems Banking University of HCM City Viet Nam

ISBN: (纸本)9781509022915

The digital image watermarking technology is widely used to protect intellectual property and to authenticate digital contents in the network environment. The aim of the paper is to invoke the improved Laplacian Pyramid transform to develop a new image watermarking scheme. Specifically, the host image is decomposed and reconstructed by using the improved Laplacian Pyramid transform. Then, the mid frequency subband data with the appropriate level and strength factor are chosen to embed the watermark. Finally, we conduct experiments to investigate the invisibility and robustness of the proposed algorithm. To measure the invisibility and the robustness of the algorithms, we use the peak signal-to-noise ratio (PSNR) and normalized correlation (NC) as performance metrics. Experimental results demonstrate that invisibility and robustness are guaranteed. The proposed algorithm outperforms one based on curvelets for the lossy JPEG compression attack in terms of invisibility and robustness. © 2017 IEEE.

关键词： image watermarking

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A practice of medical image quality evaluation

A practice of medical image quality evaluation

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2003 International conference on Neural Networks and Signal processing, ICNNSP'03

作者： Zhou, Yun Chen, Duo Li, Chuan-Fu Li, xiao-Ou Feng, Huan-Qing Institute of Biomedical Engineering University of Science and Technology of China Hefei 230026 China Diagnostic Image Center Hospital of Anhui TCM Hefei 230038 China

ISBN: (纸本)0780377028

This paper is devoted to subjective/objective evaluation on medical image quality. A model based on neural network is proposed to mimic radiology doctors' perception. Medical images were compressed by different algorithms such as Dct and Wavelet with different compression rate. After decompression, subjective and objective methods are used to evaluate image quality. Subjective rating is given by common person, clinic and radiology doctors. Objective properties are obtained from three categories: image difference from traditional parameters such as MSE, SNR and so on;image feature based on HVS model and image structure distortion from a universal image quality index. Then all data are used to train a BP neural network, whose inputs are objective scores and outputs are yielded to subjective rating by professionals. © 2003 IEEE.

关键词： image quality

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Flat panel 3D display for unmanned ground vehicles

Flat panel 3D display for unmanned ground vehicles

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conference on Unmanned systems Technology xi

作者： Pezzaniti, J. Larry Edmondson, Richard Vaden, Justin Hyatt, Bryan Chenault, David B. Tchon, Joseph L. Barnidge, Tracy J. Pettijohn, Brad Polaris Sensor Technol Huntsville AL 35801 USA Rockwell Collis Cedar Rapids IA 52498 USA ARL HRED Fort Leonard MO USA

ISBN: (纸本)9780819475985

A flat panel stereoscopic display has been developed and tested for application in unmanned ground systems. The flat panel display has a footprint that is only slightly thicker than the same size LCD display and has been installed in the lid of a TALON OCU. The approach uses stacked LCD displays and produces live stereo video with passive polarized glasses but no spatial or temporal multiplexing. The analog display, which is available in sizes from 6.4" diagonal to 17" diagonal, produces 640 x 480 stereo imagery. A comparison of soldiers' performance using 3D vs. 2D using live stereo video will be given. A description of the display will be given along with discussion of the testing.

关键词： 3D visualizations Cameras Visualization LCDs 3D displays Video Reconnaissance Glasses 3D image processing Situational awareness sensors

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Measurement of linewidth and line edge roughness for ID nano CD linewidth standard product lines

Measurement of linewidth and line edge roughness for ID nano...

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2007 7th IEEE International conference on Nanotechnology - IEEE-NANO 2007

作者： Han, Guo Q. Jiang, Zhuang D. Jing, Wei X. Zhu, Ming Z. State Key Laboratory for Manufacturing Systems Engineering Xi 'an Shaanxi 710049 China Institute of Precision Engineering Xi 'An Jiaotong University Xi 'an Shaanxi 710049 China State Key Laboratory of Precision Measuring Technology and Instruments Tianjin University Tianjin 300072 China Institute of Structural Mechanics CAEP Mianyang Sichuan 621900 China

ISBN: (纸本)1424406080

One-dimensional nano CD (NCD) linewidth standard product lines are prepared using multilayer thin films deposition technique. The Ti/SiO2 multilayer thin films are systematically deposited on silicon substrates in the conventional electron-beam evaporation system. Then a single nanometer scale line can be obtained on the cleaved cross-section of one multilayer thin films structure. The linewidth and line edge roughness (LER) have been evaluated by analyzing top-down scanning electron microscope (SEM) images off-line using image processing techniques. The average linewidth is less than 25 nm and LER is estimated. © 2007 IEEE.

关键词： image segmentation

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Eye-position tracking stereoscopic display using image shifting optics

Eye-position tracking stereoscopic display using image shift...

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conference on Stereoscopic Displays and Applications VII/Complementary conference - The Engineering Reality of Virtual Reality 1996

作者： Imai, H Imai, M Ogura, Y Kubota, K NEC CORP LTD OPTOELECTR RES LABSMIYAMAE KUKAWASAKIKANAGAWA 216JAPAN

ISBN: (纸本)0819420271

We have developed an eye-position tracking stereoscopic projector which employs image shifting optics. The display allows 3D images to be viewed without special glasses from any position along a lateral axis. Its image shifting device contains a plane parallel glass plate and is installed in a liquid crystal projector. Refraction produced by inclination of the glass plate shifts the optical axis of the projected image. Since the only moving part in the optics is the lightweight glass plate, the response of the image shifting device is both fast and precise enough for interactive 3D-CAD and virtual reality applications. To improve the system's interactive response, we have widened the stereoscopic viewing area by adding a device which causes the image to vibrate laterally. Also we use a new tracking algorithm which reduces the tracking error that would ordinarily be created by delay time. Experimental results confirm the success of these improvements.

关键词： Glasses Detection and tracking algorithms Projection systems Eye Liquid crystals Stereoscopic displays Virtual reality 3D displays Magnetic sensors 3D image processing

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