Gunter Bellaire

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This article presents a complete hybrid object recognition system for three-dimensional objects using the characteristic view (ChV) idea. To apply the ChV representation method in a recognition system investigations are needed concerning the processing of large object data bases. First we present two methods to reduce the number of views in the object data(More)
We present a complete object recognition system for 3-D objects using a viewercentered object description, so-called surface normal images (SNIs), recently introduced by Park et al. [3]. Based on this representation we utilize a weak active technique (the Photometric Stereo Method (PSM)) to extract 3-D features from the objects. We combine surface(More)
In this paper we present a complete 3-D object recognition system. The task of the system is the separation of different plastic salvage for recycling of goods' packages. In Germany separation is done by hand. This hand separation is expensive and gains bad results, caused by the work circumstances. The system holds the following characteristics: 1) Viewer(More)
The representation of 3-D objects by characteristic or principal 2-D views needs investigations concerning applications with large object data bases with regard to the eecient access to the processed views. The reported research is directed at a context-sensitive characteristic view distribution of the data base objects in a hierarchical structure. This(More)
Our work presents a new concept to assist with laparoscopic surgical procedures. Rather than the simple visualization of the images from a 3D laparoscope on a stereoscopic visualization display, our goal is to register intraoperative stereoscopic images with preoperative patient’s diagnostic data (CT), without measuring fiducial markers. A graphical overlay(More)
We present a concept for a medical video server extended by a DICOM interface. DICOM conform security mechanisms will be integrated to enable secure Internet access. Especially digital stereoscopic video sequences (DSVS) that are relevant for surgery should be examined regarding clip length necessary for diagnosis and documentation and clip size manageable(More)
This article presents a complete hybrid object recognition system for three-dimensional objects using characteristic views (ChVs). High-quality 2-D reconstructions have to be generated from intensity or color data, respectively, to integrate the ChV representation method into a recognition system. First, we present an approach for obtaining edges and(More)
The tremendous amount of available medical digital data requires media for intuitive information perception. Virtual reality (VR) presents a technique for processing the visual data from various diagnostic modalities. From a synthetic patient model, the required compact information can be generated. The patient model is the basis for planning and processing(More)
Results of a video-server implementation for endoscopic investigations are presented. A PC-based workplace for video-capturing equipped with a speech-controlled interface for the surgeon is described. The clip size of the video to be stored is determined by clip length, image resolution, frame rate, and compression scheme. Captured clips are converted into(More)