{"title":"From coarse to fine correspondence of 3-D facial images and its application to 3-D facial caricaturing","authors":"T. Kondo, K. Murakami, H. Koshimizu","doi":"10.1109/IM.1997.603877","DOIUrl":"https://doi.org/10.1109/IM.1997.603877","url":null,"abstract":"We propose a method to generate a facial caricature depending on a simple method for corresponding 3-D facial images. In this method, we extract several facial parts regions each of which include facial parts of the face by using both gray and range images. The diagonal corners of the respective extracted regions are used to provide the informations on the correspondence between the faces. Therefore, by using this method, it is expectable to reduce the number of the feature points for the correspondence from more than several hundreds to ten or so. At the same time, this method makes it possible to extract boundaries of facial parts. In order to examine the feasibility of this method, we employ a usual corresponding method of the triangular patch as the reference. We generated the 3-D mean face and 3-D facial caricature to demonstrate experimentally the feasibility of the proposed method. It was clarified that the number of the correspondence points can be reduced to only 10% of the usual method.","PeriodicalId":337843,"journal":{"name":"Proceedings. International Conference on Recent Advances in 3-D Digital Imaging and Modeling (Cat. No.97TB100134)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123239183","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}
{"title":"Using PCA to model shape for process control","authors":"R. C. Crida, A. J. Stoddart, J. Illingworth","doi":"10.1109/IM.1997.603882","DOIUrl":"https://doi.org/10.1109/IM.1997.603882","url":null,"abstract":"Before surface mount components can be placed on a circuit board, it is necessary to print solder paste onto pads. The paste is then melted to make an electrical connection (reflow). A screen printing process is used to print the solder paste onto the board. This is a complicated process with a large number of input parameters. Some of these parameters can be controlled and it is the purpose of this work to investigate control of the process based on measurement of the output shape of the printed paste. The shape is measured using a laser range scanner Principal Component Analysis (PCA) is proposed as a tool for describing solder paste shape with a small number of parameters. This paper discusses the use of PCA for shape analysis in range images as well as explaining how such a description can be incorporated into a process control loop.","PeriodicalId":337843,"journal":{"name":"Proceedings. International Conference on Recent Advances in 3-D Digital Imaging and Modeling (Cat. No.97TB100134)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122259555","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}
{"title":"Data acquisition and representation of mechanical parts and interfaces to manufacturing devices","authors":"R. Bajcsy, R. Pito","doi":"10.1109/IM.1997.603842","DOIUrl":"https://doi.org/10.1109/IM.1997.603842","url":null,"abstract":"In this paper we address data acquisition, data representation and interfaces to manufacturing devices as they relate to automatic creation of electronic files for representing the complete geometry of an arbitrarily shaped part.","PeriodicalId":337843,"journal":{"name":"Proceedings. International Conference on Recent Advances in 3-D Digital Imaging and Modeling (Cat. No.97TB100134)","volume":"172 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125790136","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}
{"title":"Automatic editing and curve-fitting of 3-D surface scan data of the human body","authors":"Peng Li, P. R. Jones","doi":"10.1109/IM.1997.603879","DOIUrl":"https://doi.org/10.1109/IM.1997.603879","url":null,"abstract":"This paper presents an automatic method to trim arms from the surface scan data of the human body. Curve and surface approximation are employed to refill the data gap after the trimming process. This delivers a more realistic torso model for further applications.","PeriodicalId":337843,"journal":{"name":"Proceedings. International Conference on Recent Advances in 3-D Digital Imaging and Modeling (Cat. No.97TB100134)","volume":"132 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126246302","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}
{"title":"Fast global registration of 3D sampled surfaces using a multi-z-buffer technique","authors":"R. Benjemaa, F. Schmitt","doi":"10.1109/IM.1997.603856","DOIUrl":"https://doi.org/10.1109/IM.1997.603856","url":null,"abstract":"We present a new method for the global registration of several overlapping 3D surfaces sampled on an object. The method is based on the ICP (iterative closest point) algorithm and on a segmentation of the sampled points in an optimized set of z-buffers. This multi-z-buffer technique provides a 3D space partitioning which greatly accelerates the search of the nearest neighbours in the establishment of the point-to-point correspondence between overlapping surfaces. Then a randomized iterative registration is processed on the surface set. We have tested an implementation of this technique on real sampled surfaces. It appears to be rapid accurate and robust, especially in the case of highly curved objects.","PeriodicalId":337843,"journal":{"name":"Proceedings. International Conference on Recent Advances in 3-D Digital Imaging and Modeling (Cat. No.97TB100134)","volume":"26 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131845036","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}
J. Massa, M. Umasuthan, A. Wallace, G. Buller, A. Walker
{"title":"Rangefinding using time correlated single photon counting","authors":"J. Massa, M. Umasuthan, A. Wallace, G. Buller, A. Walker","doi":"10.1109/IM.1997.603846","DOIUrl":"https://doi.org/10.1109/IM.1997.603846","url":null,"abstract":"This paper describes a method for acquiring range data based on time-correlated single photon counting (TCSPC) and details the data analysis techniques used to compute the range measurements. The prototype sensor being built in our laboratory is capable of measuring up to 100 points per second with an accuracy of about 15 /spl mu/m.","PeriodicalId":337843,"journal":{"name":"Proceedings. International Conference on Recent Advances in 3-D Digital Imaging and Modeling (Cat. No.97TB100134)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133122481","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}
{"title":"Automatic 3-D digitization using a laser rangefinder with a small field of view","authors":"D. Papadopoulos-Orfanos, F. Schmitt","doi":"10.1109/IM.1997.603849","DOIUrl":"https://doi.org/10.1109/IM.1997.603849","url":null,"abstract":"We address the problem of the automation of surface digitization using a precision 3-D laser rangefinder. Because of their small field of view, such sensors navigate closely to the digitized object and are subject to collisions. Unlike previous techniques that addressed only the exhaustiveness of digitization, this work focuses on collision avoidance. To safely identify empty space, shadow and occlusion phenomena are carefully analyzed, and so is the effect of sampling. Then, the planning problem is solved using a hierarchical approach. At low level, we digitize a single view and address collision avoidance using path planning techniques. At high level, the problem becomes the choice of the next best view. Some implementation details and experimental results are presented.","PeriodicalId":337843,"journal":{"name":"Proceedings. International Conference on Recent Advances in 3-D Digital Imaging and Modeling (Cat. No.97TB100134)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134645283","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}
{"title":"3-D modeling from range imagery: an incremental method with a planning component","authors":"Michael K. Reed, P. Allen","doi":"10.1109/IM.1997.603851","DOIUrl":"https://doi.org/10.1109/IM.1997.603851","url":null,"abstract":"In this paper we present a method for automatically constructing a CAD model of an unknown object from range images. The method is an incremental one that interleaves a sensing operation that acquires and merges information into the model with a planning phase to determine the next sensor position or \"view\". This is accomplished by integrating a system for 3-D model acquisition with a sensor planner. The model acquisition system provides facilities for range image acquisition, solid model construction and model merging: both mesh surface and solid representations are used to build a model of the range data from each view, which is then merged with the model built from previous sensing operations. The planning system utilizes the resulting incomplete model to plan the next sensing operation by finding a sensor viewpoint that will improve the fidelity of the model. Experimental results are presented for a complex part that includes polygonal faces, curved surfaces, and large self-occlusions.","PeriodicalId":337843,"journal":{"name":"Proceedings. International Conference on Recent Advances in 3-D Digital Imaging and Modeling (Cat. No.97TB100134)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132613023","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}
{"title":"Building 3-D city models from multiple unregistered profile maps","authors":"O. Jokinen","doi":"10.1109/IM.1997.603872","DOIUrl":"https://doi.org/10.1109/IM.1997.603872","url":null,"abstract":"The paper presents an approach for building 3-D city models for virtual environments from multiple 3-D data sets acquired from different viewpoints by light striping. The raw data sets are represented as single valued parametric surfaces called the 3-D profile maps. The profile maps are registered to the same coordinate system by an iterative surface matching algorithm developed previously. The registration proceeds hierarchically from low to high resolution and all the data sets are matched simultaneously but an initial registration is assumed to be known. After having segmented each map by a region growing algorithm, the maps are integrated into a piecewise planar surface model by merging compatible segments in the overlapping areas. The borders of the segments are also traced an the parametric domains of the maps as a step for building a wireframe model. Test results are shown in the case of a scale model of an urban area digitized in laboratory conditions.","PeriodicalId":337843,"journal":{"name":"Proceedings. International Conference on Recent Advances in 3-D Digital Imaging and Modeling (Cat. No.97TB100134)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132782134","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}
J. Beraldin, L. Cournoyer, M. Rioux, F. Blais, S. El-Hakim, G. Godin
{"title":"Object model creation from multiple range images: acquisition, calibration, model building and verification","authors":"J. Beraldin, L. Cournoyer, M. Rioux, F. Blais, S. El-Hakim, G. Godin","doi":"10.1109/IM.1997.603883","DOIUrl":"https://doi.org/10.1109/IM.1997.603883","url":null,"abstract":"This paper demonstrates the accuracy of a prototype Laser Range Camera (LRC) developed at the National Research Council of Canada for the creation of models of real objects. A laser survey performed in collaboration with the Canadian Space Agency and NASA is used as a test case. The object selected for this particular test case is the Orbiter Docking System (ODS) located at the Kennedy Space Center, Florida. During the laser survey, 128 range (and registered intensity) images were acquired all around the ODS. These images were then processed in our laboratory. A full model of the top portion of the ODS was created along with an almost complete model of the ODS. The ODS has a diameter of 1.6 m and a height of 3.9 m. Targets mounted on the top portion of the ODS were used to assess the accuracy of the calibration and of the image registration process. These targets were measured with a network of theodolites a day prior to the laser survey and used as a reference. With the current calibration and range image registration techniques, an accuracy better than 0.25 mm in X and Y, and, 0.80 mm in Z was achieved. These results compare favorably with the single point accuracy obtained after calibration, i.e., about 0.25 mm in X and Y, and, 0.50 mm in Z. These figures and others should testify on the usefulness of a LRC for accurate model building.","PeriodicalId":337843,"journal":{"name":"Proceedings. International Conference on Recent Advances in 3-D Digital Imaging and Modeling (Cat. No.97TB100134)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121231694","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}