We present a method for supervised volumetric segmentation based on a dictionary of small cubes composed of pairs of intensity and label cubes. Intensity cubes are small image volumes where each voxel contains an image intensity. Label cubes are volumes with voxelwise probabilities for a given label. An unknown volume is segmented by cube-wise finding the most similar dictionary intensity cube....

We present ordinal measures of association for image correspondence in the context of stereo. Linear correspondence measures like correlation and the sum of squared difference between intensity distributions are known to be fragile. Ordinal measures which are based on relative ordering of intensity values in windows—rank permutations—have demonstrable robustness. By using distance metrics betwe...

This paper describes a new approach to the estimation of dense 2-D motion from image sequences. Unlike in many other approaches that assume the constancy of image intensity along motion trajectories, we propose to use a higher order model that permits a variation of such intensity. We deene the structural model that is based on the assumption of intensity gradient constancy along motion traject...

BACKGROUND Elevated 23Na MR image intensity after acute myocardial infarction has previously been shown to correspond to high tissue [Na+] and loss of myocardial viability. In this study, we explored the potential of in vivo 23Na MRI to assess infarct size and investigated possible mechanisms for elevated 23Na image intensity. METHODS AND RESULTS Thirteen dogs and 8 rabbits underwent in situ ...

Extracting the user interested foreground from the image with intensity inhomogeneity and complex backgrounds is an important issue in image segmentation. The features of the complex background image and the user interested foreground image can be extracted respectively. Then we can use the machine learning theory to segment the image. The traditional learning classification methods include art...

Background—Elevated Na MR image intensity after acute myocardial infarction has previously been shown to correspond to high tissue [Na] and loss of myocardial viability. In this study, we explored the potential of in vivo Na MRI to assess infarct size and investigated possible mechanisms for elevated Na image intensity. Methods and Results—Thirteen dogs and 8 rabbits underwent in situ coronary ...

Most of the binarization techniques associate a certain intensity value called threshold which separate the pixel values of the concerned input grey scale image into two classes like background and foreground. Each and every pixel should be compared with the threshold and transformed to its respective class according to the threshold value. In this paper an automatic binarisation technique with...

Low-visibility conditions for navigation of vehicles are a frequent occurrence. Driving at night, in blizzards, in sand storms, or in fog form an obvious set of challenging conditions. Remote operation of unmanned vehicles through a camera image provides a similar difficulty. Gathering intelligence from satellite imagery can similarly benefit from improved visibility. Advanced image processing ...