Systems and methods for phase unwrapping

A method of performing phase unwrapping, the method being implemented on a computing device including a storage device and at least one processor, the method comprising:

• obtaining an initial phase image including a plurality of phase elements, at least one of the plurality of phase elements being wrapped;
• generating, based on phase differences between the plurality of phase elements, a phase mask corresponding to the initial phase image by processing the initial phase image;
• generating at least two segmental phase images by segmenting, along at least two directions, the initial phase image into a plurality of line-segments based on the phase mask, respectively;
• generating at least two intermediate phase images by performing phase unwrapping on each of the at least two segmental phase images, respectively;
• and
• determining an unwrapped phase image corresponding to the initial phase image based on the at least two intermediate phase images.

A non-transitory computer-readable medium, comprising at least one set of instructions, wherein when executed by at least one processor of a computing device, the at least one set of instructions cause the at least one processor to effectuate a method comprising:

• obtaining an initial phase image including a plurality of phase elements, at least one of the plurality of phase elements being wrapped;
• generating, based on phase differences between the plurality of phase elements, a phase mask corresponding to the initial phase image by preprocessing the initial phase image;
• generating at least two segmental phase images by segmenting the initial phase image along at least two directions based on the phase mask;
• generating at least two intermediate phase images by performing phase unwrapping on each of the at least two segmental phase images, respectively;
• and
• determining an unwrapped phase image corresponding to the initial phase image based on the at least two intermediate phase images.