Patent ID: 11915393
Assignee: SK HYNIX INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An image acquisition method for a Time Of Flight (TOF) camera, the image acquisition method comprising:
acquiring a first image using a first frequency;
acquiring a second image using a second frequency;
producing an initial unwrapped image based on the first and second images;
selecting a partial area from the unwrapped image;
distinguishing one or more erroneously unwrapped pixels of the partial area from remaining pixels of the partial area by comparing the number of unwrapped pixels included in two phase sections; and
moving an erroneously unwrapped pixel from a phase section to which it has been initially unwrapped to another phase section, wherein one of the two phase sections includes fewer unwrapped pixels than the other phase section.