Transactions of the Institute of electronics, information and communication engineers最新文献

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A Proposal of LMedS Hough Transform lmed霍夫变换的一个建议
K. Kato, H. Koshimizu
{"title":"A Proposal of LMedS Hough Transform","authors":"K. Kato, H. Koshimizu","doi":"10.1002/ECJC.20320","DOIUrl":"https://doi.org/10.1002/ECJC.20320","url":null,"abstract":"Pattern extraction based on the Hough transform has the excellent property that it is robust to noise and also to the occlusions in the image pattern. On the other hand, the Hough transform has an important problem as regards accuracy due to its discrete representation, which has long been discussed. This paper proposes the LMedS Hough transform, a new algorithm which uses a robust statistic as the criterion for the likelihood of the straight line. The method is not constrained by the majority principle of the conventional Hough transform, and it provides a possibility of pattern detection which differs from the Hough transform considered up to the present. It is noted that the LMedS Hough transform retains the characteristics of the conventional Hough transform, such as its global property. This paper describes the basic principles and details of the proposed algorithm and analyzes its performance from the theoretical and experimental viewpoints. © 2007 Wiley Periodicals, Inc. Electron Comm Jpn Pt 3, 90(5): 31– 39, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecjc.20320","PeriodicalId":260749,"journal":{"name":"Transactions of the Institute of electronics, information and communication engineers","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"118663848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Influence of Eye Refraction on Luminance-Pupil Diameter Relationship 眼屈光对亮度-瞳孔直径关系的影响
H. Sakai, Takayuki Kannon, Y. Hirata, S. Usui
{"title":"Influence of Eye Refraction on Luminance-Pupil Diameter Relationship","authors":"H. Sakai, Takayuki Kannon, Y. Hirata, S. Usui","doi":"10.1167/2.10.39","DOIUrl":"https://doi.org/10.1167/2.10.39","url":null,"abstract":"","PeriodicalId":260749,"journal":{"name":"Transactions of the Institute of electronics, information and communication engineers","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129720871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Low Cost and High Quality Method of Outline Font Transformation 低成本、高质量的轮廓字体转换方法
H. Wada, Shinji Wakisaka, H. Sato, Norio Kiriyama, S. Hayashi
{"title":"Low Cost and High Quality Method of Outline Font Transformation","authors":"H. Wada, Shinji Wakisaka, H. Sato, Norio Kiriyama, S. Hayashi","doi":"10.1002/ECJB.4420790810","DOIUrl":"https://doi.org/10.1002/ECJB.4420790810","url":null,"abstract":"The outline font is used widely in operational amplifier (OA) equipment since the expansion and modification of a character can be realized with a high quality. The authors developed a system which realizes LSI with a low cost that can expand the outline font with a high quality, aiming at the installation on a low-cost note-type word processor. The proposed system executes the character correction, the affine transformation, the third-order Bezier curve interpolation, the outline generation, the painting, and the memory clear processings which are needed in the outline font expansion. \u0000 \u0000 \u0000 \u0000The processings are divided into two blocks from the viewpoint of the processing time, and the blocks are processed by a pipeline. The vertical/horizontal scaling of the character is indispensable as a function of the word processor. The vertical/horizontal operation is included in the operation matrix of the affine transformation, which helps to suppress the increase of the processing time. \u0000 \u0000 \u0000 \u0000To cope with the fluctuation of the line width due to the operation error, a powerful character correction function is installed in order to improve the quality. By those considerations of the architecture, all outline font expansion processings are installed on the single-chip LSI, which is realized on 8.5 mm × 8.5 mm, by CMOS 1.0-μm process. The expansion speed of 860 characters/s (64 × 64 dot) is realized.","PeriodicalId":260749,"journal":{"name":"Transactions of the Institute of electronics, information and communication engineers","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"118097154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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