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公开(公告)号：US10964093B2
公开(公告)日：2021-03-30
申请号：US16001978
申请日：2018-06-07
发明人： Magnus Wahrenberg , Andrew Murray
摘要： A medical image processing apparatus comprises processing circuitry configured to: obtain volumetric data corresponding to a three dimensional region of a subject; perform a sampling process that comprises sampling the volumetric data at a plurality of sampling points along a plurality of sampling paths; for each of a plurality of intervals between sampling points on sampling paths, determine a position of a shading evaluation point in the interval based on intensity values and/or opacity values for a front sampling point and back sampling point of the interval; and determine a value for a shading parameter at the determined shading evaluation point; and perform a rendering process using the determined values for the shading parameter.
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公开(公告)号：US10762693B2
公开(公告)日：2020-09-01
申请号：US15946311
申请日：2018-04-05
发明人： Magnus Wahrenberg
摘要： 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.
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公开(公告)号：US20190266696A1
公开(公告)日：2019-08-29
申请号：US15906664
申请日：2018-02-27
发明人： Magnus Wahrenberg , Ross Davies
摘要： A data processing apparatus comprises a first memory configured to store at least one data set; a second memory configured to store a multi-channel atlas texture; and processing circuitry configured to: store at least one region of the at least one data set in one or more corresponding regions of the multi-channel atlas texture by altering data values of the at least one region of the at least one data set in accordance with a transformation vector comprising at least one channel weight and/or at least one numerical offset value; and reconstruct data values from the altered data values by transforming the altered data values using the transformation vector.
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公开(公告)号：US10991148B2
公开(公告)日：2021-04-27
申请号：US16101627
申请日：2018-08-13
发明人： Magnus Wahrenberg
摘要： A medical image processing apparatus comprises processing circuitry configured to: obtain volumetric medical imaging data comprising a voxel value; obtain an opacity value corresponding to the voxel value; obtain an extinction color and/or transmission color corresponding to the voxel value; modify the extinction color and/or transmission color using the opacity value, wherein the modifying of the extinction color and/or transmission color is performed using a combined opacity model that combines a first opacity model and a second, different opacity model, such that the first opacity model makes a higher contribution to the modifying than the second opacity model at lower values of opacity, and the second opacity model makes a higher contribution to the modifying than the first opacity model at higher values of opacity; and render the volumetric medical imaging data using the modified extinction color and/or transmission color.
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公开(公告)号：US10719907B2
公开(公告)日：2020-07-21
申请号：US15906664
申请日：2018-02-27
发明人： Magnus Wahrenberg , Ross Davies
摘要： A data processing apparatus comprises a first memory configured to store at least one data set; a second memory configured to store a multi-channel atlas texture; and processing circuitry configured to: store at least one region of the at least one data set in one or more corresponding regions of the multi-channel atlas texture by altering data values of the at least one region of the at least one data set in accordance with a transformation vector comprising at least one channel weight and/or at least one numerical offset value; and reconstruct data values from the altered data values by transforming the altered data values using the transformation vector.
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公开(公告)号：US11423608B2
公开(公告)日：2022-08-23
申请号：US17066917
申请日：2020-10-09
发明人： Magnus Wahrenberg
摘要： An image processing apparatus includes processing circuitry configured to render an image from volumetric image data based on illumination from at least one simulated light source. The illumination is determined from a current portion of light intensity and at least one trailing portion of light intensity if a position or other property of the at least one simulated light source is changed.
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