Morphing Research Papers - Academia.edu (original) (raw)

This paper introduces a new kind of mosaic, called Jigsaw Image Mosaic (JIM), where image tiles of arbitrary shape are used to compose the final picture. The generation of a Jigsaw Image Mosaic is a solution to the following problem:... more

This paper introduces a new kind of mosaic, called Jigsaw Image Mosaic (JIM), where image tiles of arbitrary shape are used to compose the final picture. The generation of a Jigsaw Image Mosaic is a solution to the following problem: given an arbitrarily-shaped container image and a set of arbitrarily-shaped image tiles, fill the container as compactly as possible with tiles of similar color to the container taken from the input set while optionally deforming them slightly to achieve a more visually-pleasing effect. We approach the problem by defining a mosaic as the tile configuration that minimizes a mosaicing energy function. We introduce a general energy-based framework for mosaicing problems that extends some of the existing algorithms such as Photomosaics and Simulated Decorative Mosaics. We also present a fast algorithm to solve the mosaicing problem at an acceptable computational cost. We demonstrate the use of our method by applying it to a wide range of container images an...

We present a geometric framework for automatically finding intrinsic correspondence between three-dimensional nonrigid objects. We model object deformation as near isometries and find the correspondence as the minimum-distortion mapping.... more

We present a geometric framework for automatically finding intrinsic correspondence between three-dimensional nonrigid objects. We model object deformation as near isometries and find the correspondence as the minimum-distortion mapping. A generalization of multidimensional scaling is used as the numerical core of our approach. As a result, we obtain the possibility to manipulate the extrinsic geometry and the texture of the objects as vectors in a linear space. We demonstrate our method on the problems of expression-invariant texture mapping onto an animated three-dimensional face, expression exaggeration, morphing between faces, and virtual body painting.

The current study investigated detection and interpretation of emotional facial expressions in high socially anxious (HSA) individuals compared to non-anxious controls (NAC). A version of the morphed faces task was implemented to assess... more

The current study investigated detection and interpretation of emotional facial expressions in high socially anxious (HSA) individuals compared to non-anxious controls (NAC). A version of the morphed faces task was implemented to assess emotion onset perception, decoding accuracy and interpretation, either with time pressure (Restricted Viewing Task, RVT) or with unlimited viewing (Free Viewing Task, FVT). Twenty-seven HSA and 30 NAC viewed sequences of neutral faces slowly changing to full-intensity angry, happy, or disgust expressions. Participants were instructed to assign the expression as soon as possible to one of four given emotion categories (angry, contempt, disgust, or happy). While no group differences were found for emotion onset perception or decoding performance, the results suggest an interpretation bias in HSA. Under the RVT condition, HSA demonstrated a threat bias (disgust interpreted as contempt), contrasting the NAC's positive bias (disgust interpreted as happy). No group differences were found in the FVT. We suggest that socially anxious individuals tend to misinterpret facial expressions as threatening when they must do so quickly and efficiently, as in real life. (C) 2010 Elsevier Ltd. All rights reserved.

The adaptive structures concept is of great interest in the aerospace field because of the several benefits which can be accomplished in the fields including noise reduction, load alleviation, weight reduction, etc., at a level in which... more

The adaptive structures concept is of great interest in the aerospace field because of the several benefits which can be accomplished in the fields including noise reduction, load alleviation, weight reduction, etc., at a level in which they can be considered as compulsory in the design of future aircraft. Improvements in terms of the aerodynamic efficiency, aeroelastic behavior, stability, and manoeuvrability performance have already been proved through many international studies in the past. In the family of the Smart Materials, Shape Memory Alloys (SMA) seem to be a suitable solution for many static applications. Their high structural integrability in conjunction with actuation capabilities and a favorable performance per weight ratio, allows the development of original architectures. In this study, a morphing wing trailing edge concept is presented; morphing ability was introduced with the aim of replacing a conventional flap device. A compliant rib structure was designed, based on SMA actuators exhibiting structural potential (bearing external aerodynamic loads). Numerical results, achieved through a FE approach, are presented in terms of trailing edge induced displacement and morphed shape.

Neutron diffraction is a standard method for determining the structure of matter on an atomic scale; NMR cryoporometry is a recent widely applicable technique for characterising structure on a 2nm to 2 mm scale. An extension of these... more

Neutron diffraction is a standard method for determining the structure of matter on an atomic scale; NMR cryoporometry is a recent widely applicable technique for characterising structure on a 2nm to 2 mm scale. An extension of these techniques is described, Neutron Diffraction Cryoporometry (NDC). The information from a set of neutron diffraction measurements of liquids and their crystalline forms in meso-pores, as a function of temperature, is displayed as a cryoporometry graph. The data may then be conveniently interpreted using the Gibbs–Thomson relationship by analogy with the existing technique, NMR cryoporometry. Clear information is thus obtained on the relationship between phase and nano-structure, in a form well suited to further analysis. This method is applied to an equilibrium study of water/ice in SBA-15 templated silicas, as model nano- to meso-structured systems. The method described here uses global pattern matching (a one-dimensional morphing algorithm inside a linear least-squares fitting algorithm) applied to the full range of the diffraction data. This is a rapid method by comparison with the conventional method of fitting individual (overlapping) peaks, and has already led to NMR observations indicating plastic (rotator phase) ice in the same system.
r 2007 Elsevier B.V. All rights reserved.
PACS: 64.60.i; 81.07.b; 61.12.Ld; 61.18.Fs; 03.75.Hh; 05.70.Fh; 64.60.Qb; 64.70.Dv; 68.03.Cd; 68.08.p; 82.56.Na; 82.56.Ub; 61.43.Gt; 61.46.+w;
82.60.Qr
Keywords: Confined geometry; Phase-change; Gibbs–Thomson; Neutron scattering; Neutron diffraction; Plastic ice; NMR; NMR relaxation; Cryoporometry; DSC; Thermoporosimetry; Global fitting; Pattern matching; Morphing; Porous silica

In this paper the authors describe “Otkinshi,” a new sound synthesis system with functions for sound synthesis, modification, and performance in a visual environment under Windows. Prior sound synthesis systems for music using a visual... more

In this paper the authors describe “Otkinshi,” a new sound synthesis system with functions for sound synthesis, modification, and performance in a visual environment under Windows. Prior sound synthesis systems for music using a visual control environment have been centered on object boxes for procedures such as a unit generator or pitch. However, the authors' system takes into consideration ease-of-use for synthesis and modification when moving among different levels such as arranging several completed sounds in space and time, represents the sound objects that are data as a visual unit such as icons, and allows for synthesis and modification using the above and icons representing operation objects. A sound object includes an operation history, and so actions created through trial and error can be used again through visual programming. On this foundation, sound modification based on a sinusoidal model represents the characteristic feature of the system, and includes morphing and vibrato control. Synthesis and morphing functions using a physical model are also built-in. The authors have shown that the system successfully completed two real performances of computer music, and is effective as a general tool for creating music. At present, the authors have asked composers and students at musical colleges to use the system, and are starting to exchange opinions. The authors expect their system to become a valuable tool for the creation of multimedia content, as well as for computer music. © 2004 Wiley Periodicals, Inc. Electron Comm Jpn Pt 2, 87(11): 63–72, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecjb.20129

The Morph Table is a new music interface designed for collaborative music making. It comprises a software system that generates transitions and variations (morphs) between MIDI-based musical material, and a table-top hardware design on... more

The Morph Table is a new music interface designed for collaborative music making. It comprises a software system that generates transitions and variations (morphs) between MIDI-based musical material, and a table-top hardware design on which cubes representing algorithmic parameters are moved around to control generative music. Like other table-top interfaces the size and multiple objects afford social interaction. The generative music system of the Morph Table makes it particularly suited to installations and use by inexperienced users. This paper outlines the design and usage features of the Morph Table.

The requirement of mitigating the environmental impact of helicopters has been addressed globally within the FRIENDCOPTER Project in the sen-se that several aspects (such as noise abatement, vibration reduction, fuel consumption) have... more

The requirement of mitigating the environmental impact of helicopters has been addressed globally within the FRIENDCOPTER Project in the sen-se that several aspects (such as noise abatement, vibration reduction, fuel consumption) have been studied in parallel with different approaches among which there is the active blade control. In the work at hand, attention is paid on two topics aimed at mitigating helicopter environmental impact through a morphing strategy: the aerodynamic optimization of a blade section who-se camber can be affected by an actuator and the design of a SMA based static twist concept, aimed at extending the helicopter flight envelope. The latter device is based on a SMA rod which is integrated in the spanwise di-rection within the blade structure at different positions. The actuator, when heated, transmits a torque couple which induces twist onto the blade. The twist variation due to the SMA device activation has been predicted by a FE approach (MSC/Marc software...

Image Morphing is one of the most powerful Digital Image processing technique, which is used to enhance many multimedia projects, presentations, education and computer based training. It is also used in medical imaging field to recover... more

Image Morphing is one of the most powerful Digital Image processing technique, which is used to enhance many multimedia projects, presentations, education and computer based training. It is also used in medical imaging field to recover features not visible in images by establishing correspondence of features among successive pair of scanned images. This paper discuss what morphing is and implementation of Triangulation based morphing Technique and Feature based Image Morphing. IT analyze both morphing techniques in terms of different attributes such as computational complexity, Visual quality of morph obtained and complexity involved in selection of features.

The paper presents on-going work conducted on extreme and cyclic aerodynamic load alleviation of wind turbine blades (WTB) using morphing blade sections. Promising morphing concepts considering either mechanisms or a continuously... more

The paper presents on-going work conducted on extreme and cyclic aerodynamic load alleviation of wind turbine blades (WTB) using morphing blade sections. Promising morphing concepts considering either mechanisms or a continuously deforming airfoil structure are studied in detail. Antagonistic shape memory alloy (SMA) wire/rod actuators are investigated in order to deflect the morphing trailing edge (TE) section both upwards and downwards. A morphing section of a WTB is first designed to follow target airfoil shape profiles which yield prescribed changes in the lift coefficient. Subsequently, the morphing airfoil is designed to follow prescribed target time trajectories with the aid of a PID controller, based on time series data relating the trailing edge movement with the time variation of the lift coefficient obtained through aeroelastic analyses. The thermomechanically coupled time response of the morphing section is simulated using specialty finite element models. The development of the morphing WTB section revealed several challenges. These include the enhancement of the slow response of SMA actuators, the retainment of stresses and power within reasonable limits and the minimization of tracking error. A PID controller is described and optimized to achieve fast actuator response through optimized cooling and heating cycles. Numerical results quantify the trailing edge angular movement, the time response of the morphing section and the developed stresses in the actuators. Estimations of the achieved variations of lift coefficient vs. time are also presented to assess the aerodynamic performance of the morphing section. [publication ISBN: 1634398084, 9781634398084]