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US 12,650,666 B2Granted
Method and apparatus for processing phase information
AssigneeElectronics and Telecommunications Research Institute
InventorKwan-Jung Oh
Life of this patent
Estimating the term…
Abstract
Disclosed are a method and an apparatus for processing phase information. When receiving a phase image including phase information, a processing device performs phase remapping of mapping the phase image to a predetermined range. The predetermined range is a range of a first phase value to a second phase value having a period of 2π, and a difference between the first phase value and the second phase value is 2π.
Claims11
A method comprising:
- receiving, by a processing device, a phase image including phase information;
- obtaining, by the processing device, differential phase information based on the phase image and a reference signal;
- performing, by the processing device, phase remapping of mapping the differential phase information to a predetermined range;
- and
- encoding, by the processing device, the phase image based on the phase remapping,
- wherein the predetermined range is a range of a first phase value to a second phase value having a period of 2π, and a difference between the first phase value and the second phase value is 2π,
- wherein, when the phase image is a phase image of a moving image, the phase image is input frame by frame, and
- the obtaining of differential phase information comprises:
- obtaining a prediction frame which is the reference signal by performing prediction on a phase image of a current frame;
- and
- obtaining a residual signal between an original signal that is a phase image of the current frame and a reference signal that is the prediction frame and using the residual signal as the differential phase information.
8 more elements
An apparatus comprising:
- an interface device;
- and
- a processor configured to perform processing of phase information input through the interface device, wherein the processor is configured to control the apparatus to:
- receive a phase image including phase information through the interface device;
- obtain differential phase information based on the phase image and a reference signal;
- perform phase remapping of mapping the differential phase information to a predetermined range;
- and
- encode the phase image based on the phase remapping,
- wherein the predetermined range is a range of a first phase value to a second phase value having a period of 2π, and a difference between the first phase value and the second phase value is 2π,
- wherein when the phase image is a phase image of a moving image, the phase image is input frame by frame, and the processor is configured to control the apparatus to, when obtaining the differential phase information:
- obtain a prediction frame which is the reference signal by performing prediction on a phase image of a current frame;
- and
- obtain a residual signal between an original signal that is a phase image of the current frame and a reference signal that is the prediction frame and using the residual signal as the differential phase information.
10 more elements
Dependencies are inferred from the claim text.