Occlusions contribute to scaling in natural images

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Occlusions contribute to scaling in natural images

Spatial power spectra from natural images fall approximately as the square of spatial frequency, a property also called scale invariance (scaling). Various theories for visual receptive fields consider scale invariance key. Two hypotheses have been advanced in the literature for why natural images obey scale invariance. The first is that these images have luminance edges, whose spectra fall as ...

متن کامل

Contour statistics in natural images: grouping across occlusions.

Correctly interpreting a natural image requires dealing properly with the effects of occlusion, and hence, contour grouping across occlusions is a major component of many natural visual tasks. To better understand the mechanisms of contour grouping across occlusions, we (a) measured the pair-wise statistics of edge elements from contours in natural images, as a function of edge element geometry...

متن کامل

Origins of scaling in natural images

One of the most robust qualities of our visual world is the scale invariance of natural images. Not only has scaling been found in different visual environments, but the phenomenon also appears to be calibration-independent. This paper proposes a simple property of natural images which explains this robustness: they are collages of regions corresponding to statistically independent "objects". E...

متن کامل

Modeling Occlusion and Scaling in Natural Images

The dead leaves model, introduced by the Mathematical Morphology school, consists of the superposition of random closed sets (the objects), and enables to model the occlusion phenomena. When combined with specific size distributions for objects, one obtains random fields providing adequate models for natural images. However, this framework imposes bounds on the sizes of objects. We consider the...

متن کامل

Scaling and Power Spectra of Natural Images

The effects of occlusion, scaling and edges in images on the dependence of the power spectrum on spatial frequency is studied using a simple model. The results are compared to the power spectrum behaviour that has been observed for natural images: images of the natural environment that are processed by the human visual system.

متن کامل

ذخیره 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: Vision Research

سال: 2001

ISSN: 0042-6989

DOI: 10.1016/s0042-6989(00)00302-3