منابع مشابه
Smoothing images creates corners
The isophote curvature times the gradient magnitude to some power has been studied in the literature as a measure of cornerness in images. Stability in terms of sampling noise has been proposed by selecting corners at high scale and locating them at fine scale. We will examine the problem of tracking extrema of these measures in the Linear Scale-Space using catastrophe theory. This enables us t...
متن کاملSmoothing Images Creates Corners Image and Vision Computing Smoothing Images Creates Corners
The isophote curvature times the gradient magnitude to some power has been studied in the literature as a measure of cornerness in images. Stability in terms of sampling noise has been proposed by selecting corners at high scale and locating them at fine scale. We will examine the problem of tracking extrema of these measures in the Linear Scale-Space using catastrophe theory. This enables us t...
متن کاملLocalization of Building Corners in Aerial Images
This paper describes a knowledge based approach for automatic 3D reconstruction of buildings from aerial imagery. The approach relies on using a 2D GIS map and knowledge about the imaging geometry and acquisition parameters. We show that by integrating knowledge from the images and the GIS map, the complexity of the building reconstruction process can be greatly reduced. In the first stage the ...
متن کاملHiding Behind Corners: Using Edges in Images for Better Steganography
Digital steganography involves taking an electronic file and hiding it inside another electronic file. Current digital techniques do not tend to take the cover (what the message is hidden in) into account, and thus leave telltale marks on the stego-object (what the cover becomes after hiding information). Since these marks will cause people other than the intended recipient to suspect a hidden ...
متن کاملMatching Flexible Polygons to Fields of Corners Extracted from Images
We propose a novel efficient method that finds partial and complete matches to models for families of polygons in fields of corners extracted from images. The polygon models assign specific values of acuteness to each corner in a fixed-length sequence along the boundary. The absolute and relative lengths of sides can be either constrained or left unconstrained by the model. Candidate matches ar...
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: Image and Vision Computing
سال: 2000
ISSN: 0262-8856
DOI: 10.1016/s0262-8856(99)00017-7