Shadows for inserted content

A non-transitory computer-readable storage medium comprising instructions stored thereon that, when executed by at least one processor, are configured to cause a computing system to at least:

• capture an image with a camera assembly;
• identify a surface plane within the image;
• determine a location to insert content, the content including a polygonal mesh defined in part by a skeleton that has a plurality of joints;
• select a plurality of selected joints form the plurality of joints;
• assign fade-out values to the plurality of selected joints;
• generate a shadow polygon based on the content;
• determine shadow contributions values for the plurality of selected joints for pixels of the shadow polygon;
• combine the shadow contribution values from the selected joints to generate shadow magnitude values for the pixels;
• normalize the shadow magnitude values to generate normalized shadow magnitude values;
• apply a radial falloff to the normalized shadow magnitude values to generated adjusted shadow magnitude values;
• render the shadow polygon using the adjusted shadow magnitude values;
• and
• overlay the inserted content on the rendered shadow polygon.

A system comprising:

• at least one processor;
• and
• memory storing instructions that, when executed by the at least one processor, cause the system to:
• identify a surface plane within an image;
• determine a location to insert content, the content including a skeletal animation model;
• generate a bounding box on the surface plane for the content based on a plurality of skeletal joints from the skeletal animation model;
• determine a center of mass location of the content based on projecting the plurality of skeletal joints on the surface plane and averaging positions of the projected skeletal joints;
• generate a first shadow polygon on the surface plane based on the bounding box and the center of mass location, the first shadow polygon having an oblong shape;
• render the first shadow polygon based on applying a radial falloff function to the center of mass location to generate a rendered first shadow polygon;
• select a plurality of selected skeletal joints form the plurality of skeletal joints;
• generate a second shadow polygon based on the content;
• determine shadow contributions values for the plurality of selected skeletal joints for pixels of the second shadow polygon;
• combine the shadow contribution values from the selected skeletal joints to generate shadow magnitude values for the pixels of the second shadow polygon;
• render the second shadow polygon using the shadow magnitude values to generate a rendered second shadow polygon;
• combine the rendered first shadow polygon and the rendered second shadow polygon to generate a combined shadow polygon;
• and
• overlay the inserted content on the combined shadow polygon.

A method comprising:

• determining a location to insert content within an image, the content including a polygonal mesh defined in part by a skeleton that has a plurality of joints;
• generating a bounding box for the content based on at least some of the plurality of joints;
• determining a center of mass location of the content based on at least some of the plurality of joints;
• generating a first shadow polygon based on the bounding box and the center of mass location;
• generating first shadow magnitude values for pixels of the first shadow polygon based on the center of mass location;
• selecting a plurality of selected joints form the plurality of joints;
• generating a second shadow polygon based on the content;
• determining shadow contributions values for the plurality of selected joints for pixels of the second shadow polygon;
• combining the shadow contribution values from the selected joints to generate second shadow magnitude values for the pixels of the second shadow polygon;
• combining the first shadow magnitude values from the first shadow polygon and the second shadow magnitude values from the second shadow polygon to generate a combined shadow magnitude values;
• and
• rendering a combined shadow polygon using the combined shadow magnitude values.