Patent ID: 11863788
Assignee: VARJO TECHNOLOGIES OY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 10:
11. A display apparatus comprising at least one light source and at least one processor configured to:
receive an encoded image from an encoder;
decode the encoded image, by employing a decompression algorithm, into a decoded image;
transform a given decoded pixel of the decoded image having (ρ, θ) coordinates in a log-polar coordinate system into a given output pixel of an output image having (x, y) coordinates in a Cartesian coordinate system, using an inverse log-polar transformation in which an x-coordinate of the given output pixel is a product of an antilogarithm of a radial distance (ρ) of the given decoded pixel and a cosine of a difference between an angular distance (θ) of the given decoded pixel and a function of the radial distance, and a y-coordinate of the given output pixel is a product of the antilogarithm of the radial distance of the given decoded pixel and a sine of the difference between the angular distance and the function of the radial distance; and
display the output image via the at least one light source;
wherein the function of the radial distance is equal to a half of the radial distance.