Pear fruit usually soften and develop a melting texture when harvested at the mature green stage and ripened. The reason why the fruit does not fully ripen on the tree is unknown. To clarify this, our attention was directed to the continuous supply of assimilates and/or other substances into the fruit via phloem transport. To determine the effect of inhibiting phloem transport on fruit ripening...

We present hardware-accelerated texture advection techniques to visualize the motion of particles in steady or time-varying vector fields given on Cartesian grids. We propose an implementation of 2D texture advection which exploits advanced and programmable texture fetch and per-pixel blending operations on an nVidia GeForce 3. For 3D vector field visualization, we present an algorithm for SGI’...

In the following paper, a new method for fast and accurate volume intensity and color integration is elaborated, which employs wavelet decompositions and texture mapping. At this point, it comprises and unifies the advantages of recently introduced Fourier domain volume rendering techniques and wavelet based volume rendering. Specifically, the method computes analytic solutions of the ray inten...

In this paper we present a multi-scale method based on mathematical morphology which can successfully be used in pattern classification tasks. A connected operator similar to the morphological hat-transform is defined, and two scale-space representations are built. The most important features are extracted from the scale spaces by unsupervised cluster analysis, and the resulting pattern vectors...

In this paper we describe the analysis framework system GEOAIDA with view of an application for a versatile and efficient quality assessment of geodata. GEOAIDA allows to develop image analysis strategies for complex object class definitions being provided by different GIS databases. The image analysis strategy and GIS data model can be expressed in tree-like semantic networks. The multi-hierar...

Sculpt, an interactive polyhedral solid modeling system, combines the effectiveness of BSP trees for performing geometric search, set operations, and determination of visibility, with the rendering performance of the AT&T Pixel Machines to provide interactive SCUlpting of texture mapped solids. The paradigm presented to the user is one in which a tool is used to modify a workpiece repeatedly by...

We introduce a view-dependent level of detail rendering system designed with modern GPU architectures in mind. Our approach keeps the data in static buffers and geomorphs between different LODs using per-vertex weights for seamless transition. Our method is the first out-of-core system to support texture mapping, including a mechanism for texture LOD. This approach completely avoids LOD pops an...

This paper describes the design, implementation and evaluation of Parallel Multimedia Information Retrieval systems. PAMIR is implemented on a network of Pentium PC based workstations to exploit the I/O and computation parallelism in both insertion and processing phase of complex similarity queries in multimedia Information retrieval. The system is capable to index and query multimedia objects ...

This paper describes a new method for analysis/synthesis of textures using a non-parametric multi-resolution approach. In the analysis step the new technique clusters together structural features with the same visual appearance from an input texture using a standard pyramid-based decomposition. The synthesis is obtained through a sampling procedure constraining the distribution of the spatial c...

With the rapid establishment of digital libraries and multimedia databases, the need for an efficient search algorithm is also increasing. In this paper, a new approach for content-based image indexing and retrieval is presented. The proposed method is based on a combination of multiresolution analysis and color characteristics of the image. Also, in order to obtain better retrieval results, th...