Most previous research on image categorization has focused on medium-scale data sets, while large-scale image categorization with millions of images from thousands of categories remains a challenge. With the emergence of structured large-scale dataset such as the ImageNet, rich information about the conceptual relationships between images, such as a tree hierarchy among various image categories...

We introduce a multiscale approach to modeling and rendering deformable solid objects, replacing polygonal or spline-based B-reps with a medial representation (M-rep) based on hierarchically linked, discretely sampled medial figures. Each medial figure is a widthproportionally sampled medial surface which implies object boundaries within a width-proportional tolerance; boundary variations withi...

introduction: radiation imaging is one of the applicable methods in diagnostic medicine and nondestructive testing for industrial applications. in nondestructive 3d imaging, in addition to the radiation source, there is a requirement for a suitable detection system, data acquisition system, mechanical sections for moving objects, reconstruction algorithm and finally a computer for processing an...

in this paper, an object-based, highly scalable, lossy-to-lossless 3d wavelet coding approach for volumetric medical image data (e.g. mr and ct) is proposed. the new method, called 3dobhs-spiht, is based on the well known set partitioning in hierarchical trees (spiht) algorithm and supports both quality and resolution scalability. the 3d input data is grouped into groups of slices (gos) and eac...

In this paper, we address the tasks of detecting, segmenting, parsing, and matching deformable objects. We use a novel probabilistic object model that we call a hierarchical deformable template (HDT). The HDT represents the object by state variables defined over a hierarchy (with typically five levels). The hierarchy is built recursively by composing elementary structures to form more complex s...

When an object migrates from one class to another in an ISA hierarchy, it acquires or loses membership in respective classes in the ISA hierarchy. Since an object can be an instance of multiple classes in the ISA hierarchy, there is a question of whether to have a single object identifier (OID) or multiple OIDs assigned to an object as it migrates along the ISA hierarchy. We refer to this as th...

knowledge about object classes Object instances and component hierarchy Poses in the environment and their changes over time Related: TBOX/SBOX, Galindo et al (RAS 2008) Semantic map representation Abstract knowledge about object classesknowledge about object classes Object instances and component hierarchy Poses in the environment and their changes over time Spatio-temporal object representati...