Images of three-dimensional scenes inevitably contain regions that are spatially blurred by
differing amounts, owing to depth-of-focus limitations in the imaging apparatus. Recent …

Robust micromanipulation strategies are needed in order to overcome a potential
technology barrier to the commercial development of complex microelectromechanical …

Signatures, in this work, are multi-scale representations of local gray-level information, tied
to places in gray scale images where regional differences are locally maximal. The …

Studies have shown that blur can act as a pictorial cue to depth perception. But blurring a
stimulus reduces its contrast, and studies have also shown that contrast can act as a pictorial …

In the depth from defocus (DFD) method two defocused images of a scene are obtained by
capturing the scene with different sets of camera parameters. An arbitrary selection of the …

Digitized images of millimeter bubbles are obtained with backlighting from a diffuse source.
In order to investigate how the measured and real sizes of a bubble in or out of focus relate …

In this paper, we propose a regularized solution to the depth from defocus (DFD) problem
using the space-frequency representation (SFR) framework. A smoothness constraint is …

The recovery of depth from defocused images involves calculating the depth of various
points in a scene by modeling the effect that the focal parameters of the camera have on …

In the present paper we will discuss the way to correct the text image warping due to old
bookbindings which can not open to 180/spl deg/. Two methods have been experimented to …

Many low level visual computation problems such as focus, stereo, optical flow, etc., can be
formulated as problems of extracting one or more parameters of a non-stationary …