Method and apparatus for estimating parameter of virtual screen

A method of estimating a parameter of a virtual screen, the method comprising:

• acquiring, from a physical camera, a plurality of captured images that represent a reflector that includes a physical pattern and that reflects a virtual pattern displayed on a virtual screen;
• estimating, for each reflection angle of the reflector, a respective one from among a plurality of virtual cameras that correspond to the physical camera;
• determining, for each respective one from among the plurality of virtual cameras, at least one first transformation parameter relative to a reference camera of the plurality of virtual cameras based on physical pattern transformation parameters of the plurality of virtual cameras that relate to the physical pattern;
• determining, for each respective one from among the plurality of virtual cameras, at least one second transformation parameter relative to the reference camera based on virtual pattern transformation parameters of the plurality of virtual cameras that relate to the virtual pattern;
• and
• estimating a size parameter of the virtual screen based on each of the at least one first transformation parameter and each of the at least one second transformation parameter.

An apparatus for estimating a parameter of a virtual screen, the apparatus comprising:

• a processor;
• and
• a memory that includes an instruction to be read by the processor,
• wherein the processor is configured to execute the instruction to:
• acquire, from a physical camera, a plurality of captured images that represent a reflector reflecting a virtual pattern displayed on a virtual screen and a physical pattern displayed on a physical plane;
• estimate, for each reflection angle of the reflector, a respective one from among a plurality of virtual cameras that correspond to the physical camera;
• determine, for each respective one from among the plurality of virtual cameras, at least one first transformation parameter relative to a reference camera of the plurality of virtual cameras based on physical pattern transformation parameters of the plurality of virtual cameras that relate to the physical pattern;
• determine, for each respective one from among the plurality of virtual cameras, at least one second transformation parameter relative to the reference camera based on virtual pattern transformation parameters of the plurality of virtual cameras that relate to the virtual pattern;
• and
• estimate a size parameter of the virtual screen based on each of the at least one first transformation parameter and each of the at least one second transformation parameter.