Critical Contours: An Invariant Linking Image Flow with Salient Surface Organization
نویسندگان
چکیده
منابع مشابه
Critical Contours: An Invariant Linking Image Flow with Salient Surface Organization
We exploit a key result from visual psychophysics – that individuals perceive shape qualitatively – to develop a geometrical/topological invariant (the Morse-Smale complex) relating image structure with surface structure. Differences across individuals are minimal near certain configurations such as ridges and boundaries, and it is these configurations that are often represented in line drawing...
متن کاملSurface reconstruction of detect contours for medical image registration purpose
Although, most of the abnormal structures of human brain do not alter the shape of outer envelope of brain (surface), some abnormalities can deform the surface extensively. However, this may be a major problem in a surface-based registration technique, since two nearly identical surfaces are required for surface fitting process. A type of verification known as the circularity check for th...
متن کاملFinding stable salient contours
Methods for generating maximally stable extremal regions are generalised to make intensity trees. Such trees may be computed quickly, but they are large so there is a need to select useful nodes within the tree. Methods for simplifying the tree are developed and it is shown that standard confidence tests may be applied to regions identified as parent and child nodes in the tree. These tests pro...
متن کاملCortical Synchronization Mechanism for “Pop-Out” of Salient Image Contours
We present a model based on long-range intra-cortical connections which computes the salience of contours in a visual scene. The model accounts for a number of psychophysical and physiological results on contour salience, and provides a mechanism for several of the Gestalt laws of perceptual organization. In the model, cells lying on smooth contours facilitate each other, and strongly facilitat...
متن کاملExtraction of Perceptually Salient Contours
We present a cortical-based model for computing the perceptual salience of contours embedded in noisy images. It has been suggested (Gilbert, 1992; Field, Hayes & Hess, 1993) that horizontal intra-cortical connections in primary visual cortex may modulate contrast detection thresholds and pre-attentive “popout”. In our model, horizontal connections mediate context-dependent facilitatory and inh...
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: SIAM Journal on Imaging Sciences
سال: 2018
ISSN: 1936-4954
DOI: 10.1137/17m1145525