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检索条件"主题词=Otsu Algorithm"

共 121 条记录，以下是91-100 订阅

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Detection and Recognition of Uneaten Fish Food Pellets in Aquaculture using Image Processing 6

Detection and Recognition of Uneaten Fish Food Pellets in Aq...

引用

6th International Conference on Graphic and Image Processing (ICGIP)

作者： Liu, Huanyu Xu, Lihong Li, Dawei Tongji Univ Coll Elect & Informat Engn Shanghai Peoples R China

ISBN: (纸本)9781628415582

The waste of fish food has always been a serious problem in aquaculture. On one hand, the leftover fish food spawns a big waste in the aquaculture industry because fish food accounts for a large proportion of the investment. On the other hand, the left over fish food may pollute the water and make fishes sick. In general, the reason for fish food waste is that there is no feedback about the consumption of delivered fish food after feeding. So it is extremely difficult for fish farmers to determine the amount of feedstuff that should be delivered each time and the feeding intervals. In this paper, we propose an effective method using image processing techniques to solve this problem. During feeding events, we use an underwater camera with supplementary LED lights to obtain images of uneaten fish food pellets on the tank bottom. An algorithm is then developed to figure out the number of left pellets using adaptive otsu thresholding and a linear-time component labeling algorithm. This proposed algorithm proves to be effective in handling the non-uniform lighting and very accurate number of pellets are counted in experiments.

关键词： Fish food pellets recognition image processing otsu algorithm connected area algorithm

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The Measurement Method Based on The Block Adaptive Double Thresholds of Motion Target Detection 12

The Measurement Method Based on The Block Adaptive Double Th...

引用

IEEE International Conference on Mechatronics & Automation

作者： Bian, Wenkun Zhu, Qidan Harbin Engn Univ Coll Automat Harbin Heilongjiang Peoples R China

ISBN: (纸本)9781479970988

Be proposed in this paper, based on the panoramic stereo vision mobile robot for automatic detection and tracking of moving targets and positioning, research on moving target detection algorithm, is put forward based on the block adaptive double threshold of moving object detection algorithm. First of all, the extracted from video sequence frame difference. For separation of target and background, next second range value of the utilization of the result of the difference. Then, morphological filtering. Finally, using the connectivity analysis to fill the hole. Experiments show that this method increases the system reliability, in the autonomous positioning test shows great advantages.

关键词： panoramic image adaptive threshold otsu algorithm Finite difference method

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An Image Enhancement algorithm Based on Gaussian Weighted Bilateral Filtering and Retinex Theory 8

An Image Enhancement Algorithm Based on Gaussian Weighted Bi...

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Proceedings 2015 8 International Congress on Image and Signal Processing (CISP)

作者： Chang, Jian Bai, Jiahong Liaoning Tech Univ Sch Software Huludao Peoples R China

ISBN: (纸本)9781467390989

An image enhancement algorithm based on Gaussian weighted bilateral filtering and Retinex theory is proposed to solve the disadvantages about halo, grey and noise amplification phenomenons of single-scale Retinex algorithm. First, the illumination images are estimated with Gaussian weighted bilateral filtering and their influence on visual effect is removed, which can overcome the halo phenomenon effectively. Then the contrast in low contrast regions is enhanced with piecewise linear transformation, which can improve the grey phenomenon of enhanced images. Finally, threshold values are determined by otsu algorithm to identify the dark areas of images, and the noise in dark areas is removed by bilateral filtering. Experiments show that the new algorithm can remove halo phenomenon, enhance the contrast of images, get more abundant image information and overcome the noise amplification phenomenon, which is better than the conventional single-scale Retinex algorithm and the Retinex algorithm based on bilateral filtering.

关键词： image enhancement Retinex algorithm Gaussian weighted bilateral filtering piecewise linear transformation otsu algorithm

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Image segmentation of Bullet appearance defects based on color model and hybrid threshold

Image segmentation of Bullet appearance defects based on col...

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2015 International Conference on Advances in Mechanical Engineering and Industrial Informatics(AMEII 2015)

作者： Wang peng Guo Chao-yong Liu Hong-ning Ordnance Engineering College

ISBN: (纸本)9781510806481

Aiming at the question of defect image segmentation in quality detection of bullet appearance. Through the analysis of color characteristics of bullet appearance defects and combined with otsu algorithm and two-peak algorithm, Proposes a hybrid threshold segmentation method based on color model. The method first extracts component map R, using otsu algorithm to segmentation high light part of the image,and finally with two-peak algorithm to the further defect segmentation. Application of Matlab simulation results show that, this method can be successfully applied to the bullet appearance defect segmentation.

关键词： image segmentation color model otsu algorithm two-peak algorithm

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Robust Sea-sky-line Detection for Complex Sea Background

Robust Sea-sky-line Detection for Complex Sea Background

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2015 IEEE International Conference on Progress in Informatics and Computing(PIC 2015)

作者： Dong Liang Weigang Zhang Qiaozhong Huang Fei Yang School of Computer Science and Technology Harbin Institute of Technology School of Mechanical Electrical & Information Engineering Shandong University

Sea-sky-line detection in complicated sea-sky background plays an important role in the long-range moving objects detection and the security of sea port. This paper presents a new method to detect the sea-sky-line. In the first step, the original image is transformed into grayscale image and the seasky-line region is located by using the textural features gray-level co-occurrence matrix based on texture feature. In the second step,the adaptive segmentation thresholds are obtained by the otsu algorithm, which produces a set of sea-sky-line candidate points. Finally, a simple clustering method is adopted to select appropriate points and transform them by straight line fitting. The results of experiments established on real-world sea-sky images demonstrate the effectiveness and robustness of the proposed approach.

关键词： sea-sky-line textural feature otsu algorithm linear fitting

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BUILDING IDENTIFICATION FROM SAR IMAGE BASED ON THE MODIFIED MARKER-CONTROLLED WATERSHED algorithm

BUILDING IDENTIFICATION FROM SAR IMAGE BASED ON THE MODIFIED...

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IEEE International Geoscience and Remote Sensing Symposium

作者： Yuanyuan Yang Yong Wang Jiang Qian School of Resources and Environment University of Electronic and Science Technology of China (UESTC)

ISBN: (纸本)9781479979301

Detailed information about a building and its surrounding is generally contained in hi-resolution synthetic aperture radar (SAR) data. An approach to extract the information and to identify the building with linear features from a single hi-resolution SAR image has been developed. With the strong radar backscattering and shape feature of a building in SAR image, external markers were derived by an otsu algorithm and a morphology algorithm. Then the minima imposition technique was used to modify the edge-enhanced SAR image coupled with the markers. Finally, the linear building boundaries were obtained using the watershed algorithm. Results of building extract from three types of developed areas were satisfactory.

关键词： Building identification Marker-controlled watershed algorithm otsu algorithm Synthetic Aperture Radar (SAR)

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The Multi-Scale Hough Transform Lane Detection Method Based on the algorithm of otsu and Canny

The Multi-Scale Hough Transform Lane Detection Method Based ...

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2014 3rd International Conference on Key Engineering Materials and Computer Science(KEMCS 2014)

作者： Yu Chai Sujing Wei Xinchun Li Xi'an University of Science and Technology

In order to improve the accuracy of detecting lane for automatic vehicle driving, a method for detecting the straight part of Lane is proposed, which is the Multi-Scale Hough transform method for lane detection based on the algorithm of otsu and Canny. First of all, by the methods of otsu to segment image and use the morphology operation of erode and dilate to wipe off the information of roadside trees and fences to strengthen the road boundary *** the lane edge and feature is gained by the canny operator. At last, using Standard Hough Transform, Progressiveness Probabilities Hough Transform and Multi-Scale Hough Transform complete the detection of lane's straight part. The experimental results show that, Multi-Scale Hough Transform method can accurately detect the lane line and provide the reliable basis for the path planning, automatic follow-up vehicle driving and lane departure warning.

关键词： otsu algorithm Canny algorithm Lane detection Multi-Scale Hough Transform

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RESEARCH ON THRESHOLD SEGMENTATION algorithm AND ITS APPLICATION ON INFRARED SMALL TARGET DETECTION algorithm 12

RESEARCH ON THRESHOLD SEGMENTATION ALGORITHM AND ITS APPLICA...

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12th IEEE International Conference on Signal Processing (ICSP)

作者： Zhang Lan-yong Du Yi-xuan Li Bing Harbin Engn Univ Coll Automat Harbin Peoples R China

ISBN: (纸本)9781479921867

For infrared dim target detection, proposed an improved otsu algorithm, advantages in the search for the optimal solution using genetic algorithms, use class variance between the image pixels as a judgment function, realized the improved algorithm, reached the class variance detection threshold segmentation algorithm improvements. Infrared image processing by real infrared video sampling, the proposed algorithm with traditional the otsu algorithm simulation comparison, experimental results show that the proposed algorithm guaranteed under the premise of the detection accuracy of the segmentation algorithm, to the improvement of the performance of real-time processing of traditional algorithms, excellent algorithm program with a value of engineering practice.

关键词： Target detection otsu algorithm Genetic algorithms Infrared image

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Robot Fish Detection Based on a Combination Method of Three-Frame-Difference and Background Subtraction

Robot Fish Detection Based on a Combination Method of Three-...

引用

26th Chinese Control and Decision Conference (CCDC)

作者： Lan Yongtian Ji Zhijian Gao Junwei Wang Yaowei Qingdao Univ Sch Automat Engn Qingdao 266071 Peoples R China

ISBN: (纸本)9781479937066

By combining three-frame-difference method with background subtraction method, an approach is proposed for rapid detection and identification of moving targets. First the background frame is achieved after decoding frame operation on video which is collected by the robotic fish platform and made into gray-level. Then the threshold determined by the otsu algorithm is employed to transform them into binary images. After that, a new binary image (F1) that the moving targets are extracted is obtained by three-frame-difference method mixed with AND logic operator and the mathematical morphology operation. If moving targets are detected in frame (F1), background subtraction method is applied to get another binary images (F2);otherwise specific messages will be shown in the frame. Finally, accurate image is obtained by using the 4-neighbor topology method mixed with the AND operation between F1 and F2. Program simulation experiments show that in the robotic fish system the proposed algorithm can detect fish and judge moving situation accurately, completely and quickly.

关键词： Three-frame-difference Background subtraction otsu algorithm 4-neighbor topology

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A Study on the Compensation of Image Rotation for Optical Three-Dimensional Microscope

A Study on the Compensation of Image Rotation for Optical Th...

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International Conference on Control, Automation and Systems

作者： Yeon-Beom Choi Jun-Ho Kim Woo-Jun Kim Doo-Hee Jung Department of Electrical Engineering Korea Polytechnic University Glonik

ISBN: (纸本)9781479999767

In this paper, we propose a method to correct the pechan prism table for optical three-dimensional micro-scope. To minimize an error in rotation angle of image for corresponding polar angle when using the calculated pechan prism table, we processed the image of reference sample to calculate the rotation angle, then create a new table. Experimental works show the validity and practicality of the proposed method.

关键词： 3D Optical Microscope otsu algorithm Line Detect Position Control

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