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Deformable Registration of Digital Images

Journal of Computer Science & Technology 1998年第3期13卷 246-260页

作者：管伟光解林马颂德 DepartmentofComputerScience HarbinUniversityofScienceandTechnologyHarbin150080PR.China

This paper proposes a novel elastic model and presents a deformable registration method based on the model. The method registers images without the need to extract features from the images, and therefore works directly on grey-level images. A new similarity metric is given on which the formation of external forces is based. The registration method, taking the coarse-to-fine strategy constructs external forces in larger scales for the first few iterations to rely more on global evidence, and then in smaller scales for later iterations to allow local relinements. The stiffness of the elastic body decreases as the process *** make it widely applicable, the method is not restricted to any trpe of transformation. The variations between images are thought as general free-form *** the elastic model designed is linearized, it can be solved very efficiently with high *** method has been successfully tested on MRI images. It will certainly find other uses such as matching time-varying sequences of pictures for moion analysis,fitting templates into images for non-rigid object recognition, maching stereo images for shape recovery etc.

关键词： Image registration deformable model deformable registration local similarity function hierarchy multiscale

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Hans ***’s Integral similarity function—At Fifty

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Atmospheric and Climate Sciences 2013年第4期3卷 581-594页

作者： Gerhard Kramm Dillon J.Amaya Thomas Foken Nicole Molders Geophysical Institute University of Alaska FairbanksFairbanksUSA Department of Atmospheric Sciences College of GeosciencesTexas A&M UniversityCollege StationUSA Department of Micrometeorology University of BayreuthBayreuthGermany Member of Bayreuth Center of Ecology and Environmental Research(BayCEER) University of BayreuthBayreuthGermany Department of Atmospheric Sciences College of Natural Science and MathematicsUniversity of Alaska FairbanksFairbanksUSA

Fifty years ago, Hans A. Panofsky published a paper entitled Determination of stress from wind and temperature measurements. In his famous paper, he presented a new profile function for the mean horizontal wind speed under the condition of diabatic stratification that includes his integral similarity function. With his integral similarity function, he opened the door for Monin-Obukhov scaling in a wide range of micrometeorological and microclimatological applications. In a historic survey ranging from the sixties of the past century down to the present days, we present integral similarity functions for momentum, sensible heat, and water vapor for both unstable and stable stratification, where on the one hand free convection condition and on the other hand strongly stable stratification are addressed.

关键词： Profile functions Monin-Obukhov Scaling Prandtl-Obukhov-Priestley Scaling local similarity function Integral similarity function Obukhov Number Gradient Richardson Number Flux Richardson Number

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