Detection of crack eggs by image processing and soft-margin support vector machine

2018 ◽  
Vol 18 (1) ◽  
pp. 21-31 ◽  
Author(s):  
Lanlan Wu ◽  
Qiaohua Wang ◽  
Dengfei Jie ◽  
Shucai Wang ◽  
Zhihui Zhu ◽  
...  
2013 ◽  
Vol 38 (2) ◽  
pp. 374-379 ◽  
Author(s):  
Zhi-Li PAN ◽  
Meng QI ◽  
Chun-Yang WEI ◽  
Feng LI ◽  
Shi-Xiang ZHANG ◽  
...  

Author(s):  
Aishwarya .R

Abstract: Lung cancer has been a major contribution to mortality rates world-wide for many years now. There is a need for early diagnosis of lung cancer which if implemented, will help in reducing mortality rates. Recently, image processing techniques have been widely applied in various medical facilities for accurate detection and diagnosis of abnormality in the body images like in various cancers such as brain tumour, breast tumour and lung tumour. This paper is a development of an algorithm based on medical image processing to segment the lung tumour in CT images due to the lack of such algorithms and approaches used to detect tumours. The work involves the application of different image processing tools in order to arrive at the desired result when combined and successively applied. The segmentation system comprises different steps along the process. First, Image preprocessing is done where some enhancement is done to enhance and reduce noise in images. In the next step, the different parts in the images are separated to be able to segment the tumour. In this phase threshold value was selected automatically. Then morphological operation (Area opening) is implemented on the thresholded image. Finally, the lung tumour is accurately segmented by subtracting the opened image from the thresholded image. Support Vector Machine (SVM) classifier is used to classify the lung tumour into 4 different types: Adenocarcinoma(AC), Large Cell Carcinoma(LCC) Squamous Cell Carcinoma(SCC), and No tumour (NT). Keywords: Lung tumour; image processing techniques; segmentation; thresholding; image enhancement; Support Vector Machine; Machine learning;


Today, digital image processing is used in diverse fields; this paper attempts to compare the outcome of two commonly used techniques namely Speeded Up Robust Feature (SURF) points and Scale Invariant Feature Transform (SIFT) points in image processing operations. This study focuses on leaf veins for identification of plants. An algorithm sequence has been utilized for the purpose of recognition of leaves. SURF and SIFT extractions are applied to define and distinguish the limited structures of the documented vein image of the leaf separately and Support Vector Machine (SVM) is integrated to classify and identify the correct plant. The results prove that the SURF algorithm is the fastest and an efficient one. The results of the study can be extrapolated to authenticate medicinal plants which is the starting step to standardize herbs and carryout research.


2021 ◽  
Vol 17 (1) ◽  
Author(s):  
Gunawan Gunawan ◽  
Yuza Reswan

Penggunaan tanda tangan saat ini banyak digunakan untuk memverifikasi keabsahan dari berbagai transaksi keuangan. Lembar cek, credit card dan berbagai dokumen lainnya menggunakan tanda tangan sebagai pengenal keabsahan seseorang. Teknologi identifikasi untuk  pengenalan  pola  tanda  tangan  termasuk  didalam  biometrika yang menggunakan karakteristik perilaku alami manusia. pada penelitian ini akan dibuat suatu perancangan aplikasi pengenalan pola tanda tangan menggunakan metode Support Vector Machine. Tujuan yang ingin dicapai adalah untuk membangun sistem yang dapat mendeteksi tipe pemalsuan tanda tangan berbasis metode Support Vector Machine. Kesimpulan dari penelitian ini memberikan kemudahan dalam melakukan pengenalan terhadap pola tanda tangan seseorang tersebut sehingga dapat diketahui informasi pemilik tanda tangan tersebut dan mendapatkan data tentang pola tanda tangan. Rancangan aplikasi ini yang dapat membantu pengguna dalam upaya melakukan deteksi tanda tangan, rancangan ini  layak  digunakan  sehingga  dapat  memberikan kemudahan dalam melakukan pengenalan terhadap pola tanda tangan seseorang tersebut sehingga dapat diketahui informasi pemilik tanda tangan tersebut. Hasil olah Matlab pada image processing dan jaringan syaraf tiruan biasanya disimpan pada ekstensi *.mat karena variabel image processing dan jaringan syaraf tiruan bersifat angka. Kata Kunci : Aplikasi, Tanda Tangan, SVM, Pola


Symmetry ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1380
Author(s):  
Dima Younes ◽  
Essa Alghannam ◽  
Yuegang Tan ◽  
Hong Lu

The current nondestructive testing methods such as ultrasonic, magnetic, or eddy current signals, and even the existing image processing methods, present certain challenges and show a lack of flexibility in building an effective and real-time quality estimation system of the resistance spot welding (RSW). This paper provides a significant improvement in the theory and practices for designing a robotized inspection station for RSW at the car manufacturing plants using image processing and fuzzy support vector machine (FSVM). The weld nuggets’ positions on each of the used car underbody models are detected mathematically. Then, to collect perfect pictures of the weld nuggets on each of these models, the required end-effector path is planned in real-time by establishing the Denavit-Hartenberg (D-H) model and solving the forward and inverse kinematics models of the used six-degrees of freedom (6-DOF) robotic arm. After that, the most frequent resistance spot-welding failure modes are reviewed. Improved image processing methods are employed to extract new features from the elliptical-shaped weld nugget’s surface and obtain a three-dimensional (3D) reconstruction model of the weld’s surface. The extracted artificial data of thousands of samples of the weld nuggets are divided into three groups. Then, the FSVM learning algorithm is formed by applying the fuzzy membership functions to each group. The improved image processing with the proposed FSVM method shows good performance in classifying the failure modes and dealing with the image noise. The experimental results show that the improvement of comprehensive automatic real-time quality evaluation of RSW surfaces is meaningful: the quality estimation could be processed within 0.5 s in very high accuracy.


Author(s):  
Dionis A. Padilla ◽  
Glenn V. Magwili ◽  
Alec Louie A. Marohom ◽  
Clyde Mozes G. Co ◽  
John Charles C. Gano ◽  
...  

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