A yukata is a type of traditional Japanese kimono. An alignment of its texture pattern is an important factor of the yukata design. The wearing condition of the yukata is affected by the wearer's body shape and the way of wearing the yukata. Accordingly, a three dimensional display of the yukata is necessary for designing the yukata. In this paper, we developed a human body shape imaging system for yukata design. Firstly, we developed an algorithm to measure the wearer's upper half of the body, which is important to display the wearing condition of the yukata. Secondly, we developed an algorithm to map the texture pattern of the kimono cloth on the wearer's body shape. The designer and the wearer can make sure of the condition of the texture alignment exactly because the yukata is displayed three dimensionally on the wearer's body shape.
en-copyright= kn-copyright= en-aut-name=SanoTetsuya en-aut-sei=Sano en-aut-mei=Tetsuya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=YamamotoHideki en-aut-sei=Yamamoto en-aut-mei=Hideki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University en-keyword=Japanese kimono kn-keyword=Japanese kimono en-keyword=Yukata kn-keyword=Yukata en-keyword=Apparel CAD kn-keyword=Apparel CAD en-keyword=Image processing kn-keyword=Image processing END start-ver=1.4 cd-journal=joma no-vol=2 cd-vols= no-issue= article-no= start-page=1131 end-page=1136 dt-received= dt-revised= dt-accepted= dt-pub-year=2003 dt-pub=20035 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Development of image analysis for detection of defects of BGA by using X-ray images en-subtitle= kn-subtitle= en-abstract= kn-abstract=In the surface mount technology, Ball Grid Array (BGA) has been used in a production of PC boards, because of their excellent characters such as high density of the lead pin pitch, better lead rigidity and self-alignment during re-flow processing. This paper deals with the development of image analysis for the detection of defects at BGA solder joints in PC boards by using X-ray images. In the conventional IC boards, it is possible to detect defects of solder joints by visual inspection, because the lead of IC package is set on its outside. However, we can't detect visually defects at BGA solder joints, because they are hidden under the IC package. In a production line, the inspection of BGA in PC boards depends on the function test of electric circuits in the final process. To improve a cost performance and the reliability of PC boards, an inspection of BGA is required in the surface mount process. Types of defects at BGA solder joints are solder bridge, missing connection, solder voids, open connection and miss-registration of parts. As we can find mostly solder bridge in these defects, we pick up this to detect solder bridge in a production line. The problems of image analysis for the detection of defects at BGA solder joints are the detection accuracy and image processing time according to a line speed of production. To get design data for the development of the inspection system, which can be used easily in the surface mount process, it is important to develop image analysis techniques based on X-ray image data. At the first step of our study, we attempt to detect the characteristic of the solder bridges based on an image analysis.
en-copyright= kn-copyright= en-aut-name=SumimotoTetsuhiro en-aut-sei=Sumimoto en-aut-mei=Tetsuhiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MaruyamaToshinori en-aut-sei=Maruyama en-aut-mei=Toshinori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=AzumaYoshiharu en-aut-sei=Azuma en-aut-mei=Yoshiharu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=GotoSachiko en-aut-sei=Goto en-aut-mei=Sachiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=MondouMunehiro en-aut-sei=Mondou en-aut-mei=Munehiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=FurukawaNoboru en-aut-sei=Furukawa en-aut-mei=Noboru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=OkadaSaburo en-aut-sei=Okada en-aut-mei=Saburo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University affil-num=4 en-affil= kn-affil=Okayama University affil-num=5 en-affil= kn-affil=Eastern Hiroshima Prefecture Industrial Research Institute affil-num=6 en-affil= kn-affil=Eastern Hiroshima Prefecture Industrial Research Institute affil-num=7 en-affil= kn-affil=National Institute of Advanced Industrial Science and Technology en-keyword=X-ray imaging kn-keyword=X-ray imaging en-keyword=ball grid arrays kn-keyword=ball grid arrays en-keyword=image processing kn-keyword=image processing en-keyword=inspection kn-keyword=inspection en-keyword=printed circuit manufacture kn-keyword=printed circuit manufacture en-keyword=quality control kn-keyword=quality control en-keyword=surface mount technology kn-keyword=surface mount technology END start-ver=1.4 cd-journal=joma no-vol=2 cd-vols= no-issue= article-no= start-page=1127 end-page=1132 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19985 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A visual feedback system for micromanipulation with stereoscopic microscope en-subtitle= kn-subtitle= en-abstract= kn-abstract=A stereoscopic microscope is widely used in a micromanipulation such as to operate genes and to inspect integration circuits. As in these tasks the micromanipulation is handled and makes too heavy burden to operators, it is desirable to perform the micromanipulation automatically. In this paper, we propose a visual feedback system for micromanipulation with stereoscopic microscope. This system takes less time to control the manipulator by reducing searching area to detect an object
en-copyright= kn-copyright= en-aut-name=SanoTetsuya en-aut-sei=Sano en-aut-mei=Tetsuya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=NagahataHidekaz en-aut-sei=Nagahata en-aut-mei=Hidekaz kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=EndoHiroshi en-aut-sei=Endo en-aut-mei=Hiroshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=SumimotoTetsuhiro en-aut-sei=Sumimoto en-aut-mei=Tetsuhiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=KunishiTakeshi en-aut-sei=Kunishi en-aut-mei=Takeshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=YamamotoHideki en-aut-sei=Yamamoto en-aut-mei=Hideki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University affil-num=4 en-affil= kn-affil=Maritime Safety Academy affil-num=5 en-affil= kn-affil=Interface Company, Limited affil-num=6 en-affil= kn-affil=Okayama University en-keyword=CCD image sensors kn-keyword=CCD image sensors en-keyword=automatic optical inspection kn-keyword=automatic optical inspection en-keyword=image processing equipment kn-keyword=image processing equipment en-keyword=integrated kn-keyword=integrated en-keyword=circuit testing kn-keyword=circuit testing en-keyword=manipulators kn-keyword=manipulators en-keyword=micromechanical devices kn-keyword=micromechanical devices en-keyword=optical microscopes kn-keyword=optical microscopes en-keyword=robot vision kn-keyword=robot vision en-keyword=stereo image processing kn-keyword=stereo image processing END start-ver=1.4 cd-journal=joma no-vol=2 cd-vols= no-issue= article-no= start-page=1349 end-page=1353 dt-received= dt-revised= dt-accepted= dt-pub-year=2004 dt-pub=20045 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A new method of measuring the 3-D shape and surface reflectance of an object using a laser rangefinder en-subtitle= kn-subtitle= en-abstract= kn-abstract=The present paper describes a newly proposed method for simultaneously measuring 3D shape and surface reflectance of an object using a laser rangefinder. The original work of this method lies in the advantage that the proposed method measures the surface reflectance using the object itself that is used for the 3D shape measurement. Experimental results show that the proposed method was applicable to noncontact industrial inspection, robot vision in automatic assembly, and reverse engineering.
en-copyright= kn-copyright= en-aut-name=BabaMitsuru en-aut-sei=Baba en-aut-mei=Mitsuru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=NaritaDaisuke en-aut-sei=Narita en-aut-mei=Daisuke kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=OhtaniKozo en-aut-sei=Ohtani en-aut-mei=Kozo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Hiroshima Institute of Technology en-keyword=Laser rangefinder kn-keyword=Laser rangefinder en-keyword=3-D shape kn-keyword=3-D shape en-keyword=Surface reflectance kn-keyword=Surface reflectance END start-ver=1.4 cd-journal=joma no-vol=2 cd-vols= no-issue= article-no= start-page=1010 end-page=1014 dt-received= dt-revised= dt-accepted= dt-pub-year=2004 dt-pub=20045 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A new laser-based position sensor with the ability of detecting the incident angle of a light en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper describes a new sensor with the ability of simultaneously detecting the position and the incident angle of a light. The basic principle is to detect the difference in the peak positions between two image sensors. We have designed and build three kinds of prototype of the proposed sensor. We experimentally verified the practicable accuracy of the proposed position sensors.
en-copyright= kn-copyright= en-aut-name=BabaMitsuru en-aut-sei=Baba en-aut-mei=Mitsuru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MichiueNorimasa en-aut-sei=Michiue en-aut-mei=Norimasa kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=NaritaDaisuke en-aut-sei=Narita en-aut-mei=Daisuke kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=OhtaniKozo en-aut-sei=Ohtani en-aut-mei=Kozo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University affil-num=4 en-affil= kn-affil=Hiroshima Institute of Technology en-keyword=Position Sensor kn-keyword=Position Sensor en-keyword=Laser kn-keyword=Laser en-keyword=Incident angle kn-keyword=Incident angle en-keyword=Rangefinder kn-keyword=Rangefinder END start-ver=1.4 cd-journal=joma no-vol=2 cd-vols= no-issue= article-no= start-page=957 end-page=962 dt-received= dt-revised= dt-accepted= dt-pub-year=1997 dt-pub=19975 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A new fast rangefinding method based on a non-mechanical scanning mechanism and a high-speed image sensor en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, we present a new fast rangefinding method based on a non-mechanical scanning mechanism and a high-speed image sensor. Although the light stripe rangefinding method often is utilized to measure three dimensional shape of an object, it is difficult to acquire dense range data at high-speed with conventional light stripe rangefinders. We proposed a fast rangefinding method based on two new ideas unlike conventional methods: (1) to move a parabolic light pattern onto the object by means of a non-mechanical mechanism; (2) to detect a true peak value using a high-speed image sensor. We have designed and built a prototype rangefinder. The rangefinder was able to acquire three-dimensional position at 500 ns which is faster than conventional rangefinders. As a result, the proposed method is effective for high-speed three-dimensional measurement
en-copyright= kn-copyright= en-aut-name=BabaMitsuru en-aut-sei=Baba en-aut-mei=Mitsuru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KonishiTadataka en-aut-sei=Konishi en-aut-mei=Tadataka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=KobayashiNobuaki en-aut-sei=Kobayashi en-aut-mei=Nobuaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University en-keyword=distance measurement kn-keyword=distance measurement en-keyword=image sensors kn-keyword=image sensors en-keyword=photodetectors kn-keyword=photodetectors END