METHOD OF FILTERING AN IMAGE DATASET
First Claim
1. A method of filtering an image dataset, having the following steps:
- providing an N-dimensional input image dataset;
applying a filtering algorithm to the input image dataset, wherein the filtering algorithm is essentially unvarying over the dataset, to thereby obtain a filtered image dataset;
wherein this step may be repeated with different filtering algorithms to thereby obtain further filtered image datasets;
providing a pre-determined spatially varying weighting function between the input and the at least one filtered image dataset;
computing a weighted sum of the input image dataset and the at least one filtered image dataset, thereby using the spatially varying weighting function, in order to obtain an output image dataset.
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Abstract
A method of filtering an image dataset and an apparatus, a data carrier, and a computer program product, the method having the following steps: providing an N-dimensional input image dataset; applying a filtering algorithm to the input image dataset, wherein the filtering algorithm is essentially unvarying over the dataset, to thereby obtain a filtered image dataset; providing a spatially varying weighting function between the input and the filtered image datasets; computing a weighted sum of the input image dataset and the filtered image dataset, thereby using the spatially varying weighting function, in order to obtain an output image dataset.
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Citations
18 Claims
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1. A method of filtering an image dataset, having the following steps:
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providing an N-dimensional input image dataset; applying a filtering algorithm to the input image dataset, wherein the filtering algorithm is essentially unvarying over the dataset, to thereby obtain a filtered image dataset;
wherein this step may be repeated with different filtering algorithms to thereby obtain further filtered image datasets;providing a pre-determined spatially varying weighting function between the input and the at least one filtered image dataset; computing a weighted sum of the input image dataset and the at least one filtered image dataset, thereby using the spatially varying weighting function, in order to obtain an output image dataset. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 16, 17, 18)
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12. A method of filtering an image dataset, having the following steps:
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providing an N-dimensional input image dataset; applying a first filtering algorithm to the input image dataset, wherein the filtering algorithm is essentially unvarying over the dataset, to thereby obtain a first filtered image dataset; applying a second filtering algorithm to the input image dataset, wherein the filtering algorithm is essentially unvarying over the dataset, to thereby obtain a second filtered image dataset;
wherein this step may be repeated with different filtering algorithms to thereby obtain further filtered image datasets;providing a pre-determined spatially varying weighting function between the at least two filtered image dataset and optionally the input image dataset; computing a weighted sum of the at least two filtered image datasets, or a weighted sum of the at least two filtered image datasets and the input image dataset, thereby using the spatially varying weighting function, in order to obtain an output image dataset.
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13. An apparatus for processing an image dataset, wherein the apparatus comprises:
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a data storage in which an N-dimensional input image dataset is stored, and which is capable of storing further image datasets as well as a pre-determined spatially varying weighting function; a computing unit, which is adapted to apply a filtering algorithm to the input image dataset, wherein the filtering algorithm is essentially unvarying over the dataset, to thereby obtain a filtered image dataset, and which is adapted to compute a weighted sum of the input image dataset and the filtered image dataset, thereby using the spatially varying weighting function, in order to obtain an output image dataset. - View Dependent Claims (14, 15)
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Specification