Image processing device, image processing method, and image processing system

An image processing method comprising:

• acquiring, using a processor, an image captured by a first imaging device provided in an optical head-mounted display (HMD) for presenting an augmented real-world image observed when a three-dimensional image in a virtual three-dimensional space is projected onto a real-world setting, the first imaging device being configured to visualize an area including a field of view of a user wearing the HMD;
• acquiring, using a processor, an image captured by a second imaging device having an angle of view that at least partially overlaps an angle of view of the first imaging device;
• and
• detecting, using a processor, a marker included in at least one of the image captured by the first imaging device and the image captured by the second imaging device.

A non-transitory computer-readable recording medium encoded with an image processing computer program, the program comprising:

• a first acquisition module configured to acquire an image captured by a first imaging device provided in an optical head-mounted display (HMD) for presenting an augmented real-world image observed when a three-dimensional image in a virtual three-dimensional space is projected onto a real-world setting, the first imaging device being configured to visualize an area including a field of view of a user wearing the HMD;
• a second acquisition module configured to acquire an image captured by a second imaging device having an angle of view that at least partially overlaps an angle of view of the first imaging device;
• and
• a detection module configured to detect a marker included in at least one of the image captured by the first imaging device and the image captured by the second imaging device.

An image processing system comprising:

• an optical head-mounted display (HMD) for presenting an augmented real-world image observed when a three-dimensional image in a virtual three-dimensional space is projected onto a real-world setting;
• a first imaging device provided in the HMD and configured to image a subject in an area including a field of view of a user wearing the HMD;
• a second imaging device having an angle of view that at least partially overlaps an angle of view of the first imaging device;
• and
• an image generation unit configured to use, as a marker, a subject captured by at least one of the first imaging device and the second imaging device to generate an augmented-reality image for presentation on the HMD.