Imaging data processing apparatus and method
AssigneeCanon Medical Systems Corporation
InventorMagnus Wahrenberg
Life of this patent
Estimating the term…
Abstract
An image processing apparatus comprises processing circuitry configured to: obtain an irradiance volume representative of virtual light cast into a volumetric imaging data set, the irradiance volume comprising a respective irradiance value for each of a plurality of points in the irradiance volume; determine, for each of a plurality of reference points in the irradiance volume, a respective value for an accuracy measure, wherein the value for the accuracy measure at each reference point is representative of an accuracy with which irradiance has been determined at or near that reference point; and perform a rendering process using the irradiance volume, wherein the rendering process is performed in dependence on the determined values for the accuracy measure.
Claims18
An image processing apparatus comprising:
- processing circuitry configured to:
- obtain an irradiance volume representative of virtual light cast into a volumetric imaging data set, the irradiance volume comprising a respective irradiance value for each of a plurality of points in the irradiance volume;
- determine, for each of a plurality of reference points in the irradiance volume, a respective value for an accuracy measure, wherein the value for the accuracy measure at each reference point is representative of an accuracy with which irradiance has been determined at or near that reference point;
- and
- perform a rendering process using the irradiance volume, wherein the rendering process is performed in dependence on the determined values for the accuracy measure, and wherein the rendering process further comprises:
- rendering an image from the irradiance volume,
- determining a respective pixel accuracy value for each of a plurality of pixels in the rendered image based on the determined values for the accuracy measure for the plurality of reference points,
- determining, based on the pixel accuracy values, at least one lower-accuracy region of the image, and
- applying a filtering process to the image, wherein the applying of the filtering process is at least partially different for the lower-accuracy region of the image than for at least one further region of the image.
An image processing method comprising:
- obtaining an irradiance volume representative of virtual light cast into a volumetric imaging data set, the irradiance volume comprising a respective irradiance value for each of a plurality of points in the irradiance volume;
- determining, for each of a plurality of reference points in the irradiance volume, a respective value for an accuracy measure, wherein the value for the accuracy measure at each reference point is representative of an accuracy with which irradiance has been determined at or near that reference point;
- and
- performing a rendering process using the irradiance volume, wherein the rendering process is performed in dependence on the determined values for the accuracy measure, wherein the rendering process further comprises:
- rendering an image from the irradiance volume,
- determining a respective pixel accuracy value for each of a plurality of pixels in the rendered image based on the determined values for the accuracy measure for the plurality of reference points,
- determining, based on the pixel accuracy values, at least one lower-accuracy region of the image, and
- applying a filtering process to the image, wherein the applying of the filtering process is at least partially different for the lower-accuracy region of the image than for at least one further region of the image.
Dependencies are inferred from the claim text.