Patent ID: 11881001
Assignee: SONY INTERACTIVE ENTERTAINMENT LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 7:
8. A chart for calibration used to calibrate an imaging apparatus including a plurality of cameras with different optical axis orientations, the chart for calibration comprising:
a plurality of planes forming a predetermined angle,
wherein any one plane among the plurality of planes includes
an area whose depicted pattern has been subjected to projective transformation (1) according to angles of imaging planes of adjacent cameras that each simultaneously capture an image of the plane among the plurality of cameras, and (2) such that positions of feature points uniformly appear in a field-of-view in at least one of vertical and horizontal directions despite being at different distances in real space, and
an area whose depicted pattern is not subjected to the projective transformation.