Image processing device and method for detecting developing lesions
First Claim
1. An image processing device, comprising:
- an input for receiving a time series of data sets representing comparable volume-based digital images, each data set comprising a position component and an intensity component,preprocessing means for modifying the data sets so as to obtain images registered geometrically and intensity-wise, andcomparative processing means for examining sets of time series of image elements, so as to detect signs of variation therein, characterized in that the comparative processing means comprise;
a modeling function, fitting a predetermined parametric model separately over at least one of the sets of time series of image elements, thereby providing information pairs of the kind;
image element, time, wherein the predetermined parametric model is of the asymmetric Gaussian type, comprising a maximum amplitude parameter, a minimum amplitude parameter, a reference width parameter and a dissymmetry parameter; and
a function for statistical analysis of the information pairs, which isolates those of the information pairs that are representative of a significant variation; and
outputting means for displaying the obtained images.
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Abstract
The invention concerns an image processing device, including an input for receiving a time series of data sets representing comparable volume digital images, each data having a position component and an intensity component, pre-processing means for modifying the data sets so as to obtain images updated in position and intensity, and comparative processing means for examining sets of time series of image elements and to detect therein signs of variations. The processing means include a modeling function for adjusting a parametric model separately on some of the sets of time series of image elements, to obtain pairs of data (image element, time) and a function for statistical analysis of said pairs of data to isolate the pairs of data representing a significant variation.
11 Citations
33 Claims
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1. An image processing device, comprising:
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an input for receiving a time series of data sets representing comparable volume-based digital images, each data set comprising a position component and an intensity component, preprocessing means for modifying the data sets so as to obtain images registered geometrically and intensity-wise, and comparative processing means for examining sets of time series of image elements, so as to detect signs of variation therein, characterized in that the comparative processing means comprise; a modeling function, fitting a predetermined parametric model separately over at least one of the sets of time series of image elements, thereby providing information pairs of the kind;
image element, time, wherein the predetermined parametric model is of the asymmetric Gaussian type, comprising a maximum amplitude parameter, a minimum amplitude parameter, a reference width parameter and a dissymmetry parameter; anda function for statistical analysis of the information pairs, which isolates those of the information pairs that are representative of a significant variation; and outputting means for displaying the obtained images. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of image processing, comprising the following steps:
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a—
receiving, with one or more computers, a time series of data sets representing comparable volume-based digital images, each data set comprising a position component and an intensity component,b—
modifying, with one or more computers, the data sets so as to obtain images registered geometrically and intensity-wise, wherein the modifying step comprises complementary steps,c—
fitting, with one or more computers, a predetermined parametric model separately over at least one of the sets of time series of image elements, thereby providing information pairs of the kind;
image element, time, wherein the predetermined parametric model is of the asymmetric Gaussian type, comprising a maximum amplitude parameter, a minimum amplitude parameter, a reference width parameter and a dissymmetry parameter andd—
isolating those of the information pairs that are representative of a significant variation by statistical analysis. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification