Panoramic images have been theme of intense research in the last years. A well-known format for panoramic images is the equirectangular one (examples can be seen in the result section). Equirectangular images may be input data for methods that create less distorted panoramic images. The method proposed by Carroll et al. [1] and detailed by Sacht [2] uses the localization of lines and faces to c...

It is envisioned that in the near future mobile robots will be assisting human beings in their daily lives. Such robots are designed and developed to be intelligent enough to operate and share the same workplace with ordinary people. In such situation, robots are expected to be intelligent enough to move autonomously, quickly and safely without human’s control, in another word, fully autonomous...

Straight-line programs offer powerful text compression by representing a text T [1, u] in terms of a context-free grammar of n rules, so that T can be recovered in O(u) time. However, the problem of operating the grammar in compressed form has not been studied much. We present the first grammar representation able of extracting text substrings, and of searching the text for patterns, in time o(...

The hadronic calorimeter of ATLAS, TileCal, provides a large amount of readout channels (about 10,000). Therefore, track detection may be performed by TileCal when cosmic muons cross the detector. The muon track detection has extensively been used in the TileCal commissioning phase, for both energy and timing calibrations, and it will also be important for background noise removal during nomina...

A straight line triangle representation (SLTR) of a planar graph is a straight line drawing such that all the faces including the outer face have triangular shape. Such a drawing can be viewed as a tiling of a triangle using triangles with the input graph as skeletal structure. In this paper we present a characterization of graphs that have an SLTR. The charcterization is based on flat angle as...

Determining the location and orientation of straight lines in images is a problem of great importance in the field of image processing. The Hough transform, has been widely used to solve this problem for binary images, and is still by far dominating the scene when it comes to line detection and its concept was further developed to detect other shapes like circles. In this paper, a new method fo...

During document scanning, skew is inevitably introduced into the incoming document image. Since the algorithms for layout analysis and character recognition are generally very sensitive to the page skew, skew detection and correction in document images are the critical steps before layout analysis. In this paper, a novel skew detection method based on straight-line fitting is proposed. And a co...

It is essential for edge detection of Hough transform to enforce the plaform of its availabilities. One of the most important subject of these enforcements is to prepare a robust method for segmenting line segments. We propose two kinds of algorithms: First one is a local algorithm, where a local area moves along the straight lines to judge locally whether the edge points should be on an edge s...