Search results for "Lips"
showing 10 items of 414 documents
Rademacherin lause
2008
3D datorgrafika kā skaņdarba vizualizācijas metode
2016
Diplomdarba tēma ir "3D datorgrafika kā sakaņdarba vizualizācijas metode". Šī diplomdarba mērķis ir balstoties uz teorētiski iegūtajām zināšanām un informācijas analizēšanu, radīt mūzikas videoklipu 3D datorgrafikā. Lai efektīvi sasniegtu mērķi un ar šī brīža aktuālākajām tendencēm mūzikas videoklipos, tika veikta aptauja un arī mūzikas videoklipu analizēšana. Teorijas apgūšanas un pētījumu rezultātā tika uzzināts kādas ir 3D datorgrafikas vizuāli stilistiskās īpašības, lai varētu pēc iespējas labāk šīs zināšanas pielietot veicot diplomdarba radošo daļu. Diplomdarba radošajā daļā tika radīts mūzikas videoklips.
Computing bi-tangents for transmission belts
2020
In this note, we determine the bi-tangents of two rotated ellipses, and we compute the coordinates of their points of tangency. For these purposes, we develop two approaches. The first one is an analytical approach in which we compute analytically the equations of the bi-tangents. This approach is valid only for some cases. The second one is geometrical and is based on the determination of the normal vector to the tangent line. This approach turns out to be more robust than the first one and is valid for any configuration of ellipses.
Randomized Hough Transform for Ellipse Detection with Result Clustering
2005
Our research is focused on the development of robust machine vision algorithms for pattern recognition. We want to provide robotic systems the ability to understand more on the external real world. In this paper, we describe a method for detecting ellipses in real world images using the randomized Hough transform with result clustering. A preprocessing phase is used in which real world images are transformed - noise reduction, greyscale transform, edge detection and final binarization - in order to be processed by the actual ellipse detector. The ellipse detector filters out false ellipses that may interfere with the final results. Due to the fact that usually more "virtual" ellipses are de…
Fast algorithm for detection of reference spheres in digital panoramic radiography.
2009
In this paper, an algorithm for detection of reference spheres from digital panoramic radiographic images is presented. The proposed algorithm was tested on a database of 107 digital panoramic radiographic images which were used for dental diagnostics. Results show that the proposed method exhibits for detection of reference spheres, a sensitivity of 97.33% and specificity of 93.85%. Performance time differed between 0.55 and 2.36s depending on image size. The aim of this work was to provide a fast ellipse detection algorithm to reduce measuring time on preoperative implant planning by lowering the computational cost.
Concerning the calculation of the color gamut in a digital camera
2006
Several methods to determine the color gamut of any digital camera are shown. Since an input device is additive, its color triangle was obtained from their spectral sensitivities and it was compared with the theoretical sensors of Ives-Abney-Yule and MacAdam. On the other hand, the RGB digital data of the optimal or MacAdam colors were simulated to transform them into XYZ data according to the colorimetric profile of the digital camera. From this, the MacAdam limits associated to the digital camera are compared with the corresponding ones of the CIE-1931 XYZ standard observer, resulting that our color device has much smaller MacAdam loci than those of the colorimetric standard observer. Tak…
Pauls rectifiable and purely Pauls unrectifiable smooth hypersurfaces
2020
This paper is related to the problem of finding a good notion of rectifiability in sub-Riemannian geometry. In particular, we study which kind of results can be expected for smooth hypersurfaces in Carnot groups. Our main contribution will be a consequence of the following result: there exists a -hypersurface without characteristic points that has uncountably many pairwise non-isomorphic tangent groups on every positive-measure subset. The example is found in a Carnot group of topological dimension 8, it has Hausdorff dimension 12 and so we use on it the Hausdorff measure . As a consequence, we show that any Lipschitz map defined on a subset of a Carnot group of Hausdorff dimension 12, with…
Ēdināšanas problēmas zīdaiņiem ar iedzimtām patoloģijām sejas - žokļu rajonā
2015
Šajā darbā aprakstītas ēdināšanas problēmas ar kādām saskaras vecāki, kuri ēdina zīdaini ar iedzimtām patoloģijām sejas-žokļu rajonā. Darbs sastāv no divām daļām. Teorētiskajā daļā ir analizēta literatūra par zīdaiņu ar iedzimtām patoloģijām sejas-žokļu rajonā ēdināšanas īpatnībām. Darbs analizēts saistībā ar Kari Martinsenas un Betijas Ņūmenas māszinību teorijām. Praktiskajā daļā ir aprakstīta pētījuma gaita un analizēti iegūtie rezultāti. Pētījumam izvēlēta kvalitatīva pētniecības metode un izveidots pētniecības instruments - intervija. Par respondentiem atlasīti vecāki, kuri ēdina zīdaini vecumā no 2-24 mēnešiem. Pēc iegūto rezultātu un pieejamās literatūras analīzes ir izstrādātas rekom…
Imperial straightening devices in disciplinary choices of academic knowledge production
2021
Abstract In this piece, the authors question whether critical language research, in its complex collection of researcher choices, is possible beyond the discursive imaginary of critical academic scholarship. In other words, how do (allegedly) anticolonial efforts re-orient towards contribution to the imperial record? We present three vignettes, through which we grapple with the notion that researcher choice exists within the solipsism of academia. In doing so, we frame research and scholarship as a collection of choices, which we believe are better understood as a collection of fraught dilemmas. These dilemmas recognize that all academic scholarship production and its processes are birthed …
Approximation of pore space with ellipsoids: a comparison of a geometrical method with a statistical one.
2018
International audience; We work with tomographic images of pore space in soil. The images have large dimensions and so in order to speed-up biological simulations (as drainage or diffusion process in soil), we want to describe the pore space with a number of geometrical primitives significantly smaller than the number of voxels in pore space. In this paper, we use the curve skeleton of a volume to segment it into some regions. We describe the method to compute the curve skeleton and to segment it with a simple segment approximation. We approximate each obtained region with an ellipsoid. The set of final ellipsoids represents the geometry of pore space and will be used in future simulations.…