Interactive 3D annotation tool with slice interpolation

A method, comprising:

• receiving, by a system comprising a processor via interaction with one or more display interfaces, annotation input that defines a manual edit to a segmentation of a two-dimensional (2D) image, wherein the 2D image is one of a set of 2D images of a three-dimensional (3D) scan of a subject;
• applying, by the system, the manual edit to the segmentation to yield an edited segmentation for the 2D image;
• and
• modifying, by the system, an initial segmentation of a non-edited image, of the set of 2D images, by interpolating the edited segmentation to the non-edited image to yield an updated segmentation for the non-edited image, wherein the modifying comprises:
• determining whether to maintain contours of the initial segmentation or to maintain interpolated contours for respective portions of the updated segmentation based on a digital model of the subject and a relationship criterion, comprising:
• in response to determining that a first portion of the updated segmentation does not satisfy a relationship criterion relative to an area corresponding to the manual edit, maintaining a contour of the initial segmentation for the first portion,
• in response to determining that a second portion of the updated segmentation satisfies the relationship criterion, modifying the second portion in accordance with the interpolating, and
• in response to determining that an interpolated contour of a portion of the updated segmentation is between a first distance from the area corresponding to the manual edit and a second distance from the area, blend the interpolated contour with a contour of the initial segmentation to yield a blended contour.

A non-transitory computer-readable medium having stored thereon executable instructions that, in response to execution, cause a system comprising at least one processor to perform operations, the operations comprising:

• receiving, via interaction with one or more display interfaces, annotation input that defines a manual edit to a segmentation of a two-dimensional (2D) image, wherein the 2D image is one of a set of 2D images of a three-dimensional (3D) scan of a subject;
• modifying the segmentation of the 2D image in accordance with the manual edit to yield an edited segmentation for the 2D image;
• and
• modifying an initial segmentation of a non-edited image, of the set of 2D images, by interpolating the edited segmentation to the non-edited image to yield an updated segmentation for the non-edited image, wherein the modifying comprises:
• maintaining contours of the initial segmentation for portions of the updated segmentation that do not satisfy a relationship criterion relative to an area corresponding to the manual edit,
• modifying contours for portions of the updated segmentation that satisfy the relationship criterion based on the interpolating, and
• in response to determining that an interpolated contour of a portion of the updated segmentation is between a first distance from the area corresponding to the manual edit and a second distance from the area, blend the interpolated contour with a contour of the initial segmentation to yield a blended contour.