Contours de l’essai.
نویسندگان
چکیده
منابع مشابه
Global Contours
We present a multi-scale approach that uses Laplacian eigenvectors to extract globally significant contours from an image. The input images are mapped into the Laplacian space by using Laplacian eigenvectors. This mapping causes globally significant pixels along the contours to expand in the Laplacian space. The measure of the expansion is used to compute the Global Contours. We apply our schem...
متن کاملSketching contours
We introduce an over-sketching interface for feature-preserving surface mesh editing. The user sketches a stroke that is the suggested position of part of a silhouette of the displayed surface. The system then segments all image-space silhouettes of the projected surface, identifies among all silhouette segments the best matching part, derives vertices in the surface mesh corresponding to the s...
متن کاملIllusory contours
Illusory contours are perceived in the absence of any real physical luminance gradients between inducers that are spatially discontinuous (Fig. 1a,b).1–3 It has been controversial whether the perception of these subjective contours arise from higher level cognitive mechanisms that depend on attention and serial search4–6 or from lower level parallel processing in the early automatic, preattenti...
متن کاملDétection de Contours et Diffusion Anisotropique dans les Images. (Edge detection and anisotropic diffusion in images)
This thesis is devoted to the anisotropic edge detection and the anisotropic diffusion in images. Based on Gaussian half filters, these half filters scan all orientations around a pixel with a defined step. From oriented derivatives of Gaussian half filters, an approach to edge detection in color images has been developed. Since the filter is long and thin, this method allows to extract anisotr...
متن کاملApplications : sensibilité à l’orientation des contours visuels, formation de structures corticales et hallucinations visuelles
Dans ce troisième chapitre, nous traiterons trois exemples d’application des notions introduites dans le chapitre théorique sur les bifurcations. Ces exemples illustrent pleinement l’importance des mathématiques dans la communauté des neurosciences. Le premier exemple traité porte sur un modèle décrivant la sensibilité neuronale à l’orientation des contours visuels et consiste en une analyse en...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Études littéraires
سال: 2005
ISSN: 0014-214X,1708-9069
DOI: 10.7202/012830ar