Canny algorithm can be used in extracting the object’s contour clearly by setting the appropriate parameters. The Otsu algorithm can calculate the high threshold value which is significant to the Canny algorithm, and then this threshold value can be used in the Canny algorithm to detect the object’s edge. From the exprimental result, the Otsu algorithm can be applied in choosing the threshold v...

There are several typographical errors in this article. In the legends of Figures 3 and 4, ‘‘(6 . 1 SE)’’ should read ‘‘(1 SE)’’. In the Methods, Plants and Pets subsection, ‘‘(of C. sinensis . Camellia sinensis)’’ should read ‘‘(of Camellia sinensis)’’; ‘‘(Aphis gossypii.A. gossypii)’’ should read ‘‘(A. gossypii)’’; ‘‘(15. 22uC, 606 10%RH, 13. 16-h photoperiod)’’ should read ‘‘(22uC, 60 6 10% ...

A key aspect in extracting quantitative information from FMI logs is to segment the FMI image to get image of layers. In this paper, an automatic method based on FCM clustering and Otsu thresholding is introduced in order to extract quantitative information from FMI images. All pixels are clustered using FCM clustering algorithm at the f irst step. The second step uses KNN for other clustering....

Image segmentation is defined as a partition realized to an image into homogeneous regions to modify it into something that is more meaningful and softer to examine. Although several segmentation approaches have been proposed recently, in this paper, we develop a new image segmentation method based on the statistical confidence interval tool along with the well-known Otsu algorithm. According t...

Yoshiki Tsunesada, Nobuyuki Kanda, Hiroyuki Nakano, Daisuke Tatsumi, Masaki Ando, Misao Sasaki, Hideyuki Tagoshi, and Hirotaka Takahashi National Astronomical Observatory of Japan, Tokyo 181-8588, Japan Department of Mathematics And Physics, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan Department of Physics, University of Tokyo, Tokyo 113-0033, Japan Yukawa Institute...

Aiming at the disadvantages of the traditional positioning technology, barcode positioning system is introduced in this paper. Based on Otsu method, a novel barcode image binarization is put forward by comparing varieties of image binarization methods domestically and abroad. Moreover, we have a systematic research on histogram and binarization mechanism, and also give the calculation of histog...

Variance-based thresholding methods could be biased from the threshold found by expert and the underlying mechanism responsible for this bias is explored in this paper. An analysis on the minimum class variance thresholding (MCVT) and the Otsu method, which minimizes the within-class variance, is carried out. It turns out that the bias for the Otsu method is due to differences in class variance...

In computer vision, detection and tracking of targets is very complex problem and demands sophisticated solutions. Unmanned Aerial Vehicles (UAVs) are increasingly being used for reconnaissance and Surveillance. This framework mainly consists of image matching for reconnaissance and Surveillance. This framework mainly consists of image matching for Digital Scene Matching Area Correlation (DSMAC...

Hiroshi Murata, Linda M. Zangwill, Yuri Fujino, Masato Matsuura, Atsuya Miki, Kazunori Hirasawa, Masaki Tanito, Shiro Mizoue, Kazuhiko Mori, Katsuyoshi Suzuki, Takehiro Yamashita, Kenji Kashiwagi, Nobuyuki Shoji, and Ryo Asaoka Department of Ophthalmology, University of Tokyo Graduate School of Medicine, Tokyo, Japan Shiley Eye Institute Hamilton Glaucoma Center, University of California, San D...