Generating shadows from a segmentation mask

A system, comprising:

• a memory;
• and
• one or more processors configured to:
• generate, from received imagery, a segmentation of an image object, wherein the segmentation is based on a segmentation mask comprising an array of contiguous pixels of the image object;
• generate a contour from the segmentation mask, wherein the contour comprises an array of the pixels along a boundary of the segmentation mask;
• calculate a plurality of regions of the contour, wherein each of the plurality of regions comprises a set of continuous points;
• identify within the plurality of regions of the contour, a plurality of key points that correspond to ground contact points of the image object;
• apply, based on the plurality of key points, a perspective warping to a first shadow template to generate a second shadow for the image object;
• and
• render, on a selected background, the segmentation of the image object as an overlay on the second shadow.

A non-transitory computer-readable device having instructions stored thereon that, when executed by at least one computing device, cause the at least one computing device to perform operations comprising:

• generating, from received imagery, a segmentation of an image object, wherein the segmentation is generated based on a segmentation mask and the segmentation mask comprises an array of contiguous pixels of the image object;
• generating a contour from the segmentation mask, wherein the contour comprises an array of the pixels along a boundary of the segmentation mask;
• calculating a plurality of regions of the contour, wherein each of the plurality of regions comprises a set of continuous points;
• identifying within the plurality of regions of the contour, a plurality of key points that correspond to ground contact points of the image object;
• applying, based on the plurality of key points, a perspective warping to a first shadow template to generate a second shadow for the image object;
• and
• rendering, on a selected background, the segmentation of the image object as an overlay on the second shadow.