Fast Space-variant Image Analysis Through Steerable Gabor-like Filters

نویسندگان

  • Silvio P. Sabatini
  • Fabio Solari
  • Giacomo M. Bisio
چکیده

The log-polar image geometry, first introduced to model the space-variant topology of the human retina receptors in relation to the data compression it achieves, has become popular in the active vision community for the important algorithmic benefits it provides. Despite these advantages, foveated sensing has not been widely used due to the lack of specific image processing tools. We demonstrate that it is possible to perform multichannel space-variant image processing with high computational efficiency through Gabor-like steerable kernels in the cortical domain.

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

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Fast Gabor Filters for Object Recognition of Mobile Robot

Gabor filters have been used extensively in areas related to feature extraction of images due to their localization in space and bandlimited properties. Since 2-D Gabor filters have more complexity of computation, they have been used in static image decompositions rather than for mobile robots. In an attempt to reduce complexity of computation of 2-D Gabor filters for mobile robots, in this pap...

متن کامل

2D Focal Plane Steerable and Scalable Cortical Filters

We describe a 25x25 pixel image sensor which spatially filters a set of input currents supplied by an array of phototransistors by two orientation selective image filters. The filters are similar to even and odd Gabor filters, which have been used to model the receptive fields of neurons in the visual cortex. The circuit architecture implementing the image filter consists of two resistive netwo...

متن کامل

Local orientation analysis in images and image sequences using steerable filters

In this thesis, we address the issue of local orientation analysis using steerable filters. From the standpoint of the sampling theory, current orientation steerable filters sample the spectrum of the orientation space with Dirac functions. According to the well known uncertainty principle, we cannot simultaneously localize a signal both in the spatial domain and in the spectral domain exactly....

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

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

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2006