Shape from focus
SK Nayar, Y Nakagawa - IEEE Transactions on Pattern …, 1994 - ieeexplore.ieee.org
The shape from focus method presented here uses different focus levels to obtain a
sequence of object images. The sum-modified-Laplacian (SML) operator is developed to …
sequence of object images. The sum-modified-Laplacian (SML) operator is developed to …
Depth from defocus: A spatial domain approach
M Subbarao, G Surya - International Journal of computer vision, 1994 - Springer
A new method named STM is described for determining distance of objects and rapid
autofocusing of camera systems. STM uses image defocus information and is based on a …
autofocusing of camera systems. STM uses image defocus information and is based on a …
Microscopic shape from focus using active illumination
M Noguchi, SK Nayar - Proceedings of 12th International …, 1994 - ieeexplore.ieee.org
Shape from focus relies on surface texture for the computation of depth. In many real-world
applications, surfaces can be smoothly shaded and lacking in detectable texture. In such …
applications, surfaces can be smoothly shaded and lacking in detectable texture. In such …
Simple range cameras based on focal error
We describe research on two imaging range sensors that use defocus to estimate range.
One technique is completely passive and provides dense range measurements in textured …
One technique is completely passive and provides dense range measurements in textured …
Computing depth from out-of-focus blur using a local frequency representation
M Gokstorp - Proceedings of 12th International Conference on …, 1994 - ieeexplore.ieee.org
We present a method to compute depth from the amount of defocus in two images obtained
from the same view-point but with different camera parameter settings. The change in …
from the same view-point but with different camera parameter settings. The change in …
Nonlinear global and local document degradation models
T Kanungo, RM Haralick… - International Journal of …, 1994 - Wiley Online Library
Two sources of document degradation are modeled:(1) perspective distortion that occurs
while photocopying or scanning thick, bound documents; and (2) degradation due to …
while photocopying or scanning thick, bound documents; and (2) degradation due to …
Interpolation using wavelet bases
AP Pentland - IEEE Transactions on Pattern Analysis and …, 1994 - ieeexplore.ieee.org
Efficient solutions to regularization problems can be obtained using orthogonal wavelet
bases for preconditioning. Good approximate solutions can be obtained in only two or three …
bases for preconditioning. Good approximate solutions can be obtained in only two or three …
Estimation of edge parameters and image blur using polynomial transforms
V Kayargadde, JB Martens - CVGIP: Graphical models and image …, 1994 - Elsevier
A method is presented for detecting blurred edges in images and for estimating the following
edge parameters: position, orientation, amplitude, mean value, and edge slope. The method …
edge parameters: position, orientation, amplitude, mean value, and edge slope. The method …
Leukocyte classifications by size functions
M Ferri, S Lombardini, C Pallotti - Proceedings of 1994 IEEE …, 1994 - ieeexplore.ieee.org
Leukocytes are divided into classes. Their automatic classification is accomplished by
means of site functions, based on two measuring functions defined expressly for taking into …
means of site functions, based on two measuring functions defined expressly for taking into …
Depth estimation from a sequence of monocular images with known camera motion
H Zhuang, R Sudhakar, J Shieh - Robotics and autonomous systems, 1994 - Elsevier
This paper reports an approach of computing depth maps from a monocular image
sequence, under the assumption that the camera motion is known. The direct depth …
sequence, under the assumption that the camera motion is known. The direct depth …