Phase unwrapping method, device and system, computer equipment and storage medium
A technology of unwrapping and phasing, which is applied in the field of image processing research to achieve the effects of improving accuracy, avoiding manual threshold setting, and improving efficiency and accuracy
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Embodiment 1
[0076] Phase contrast method is a common quantitative phase distribution imaging method, which is widely used in transparent biomedical cell microscopic imaging, transparent material or microlens detection, interferometry, flow field density distribution measurement and other fields. The phase unwrapping process is often involved in the reconstruction of real phase distribution by phase contrast method in the whole field.
[0077] Suppose the sample of the target object is a pure phase transparent object, referred to as a phase object, and the parallel light with amplitude A is incident on the object plane, then the complex amplitude of the object light field can be expressed as:
[0078]
[0079] If the influence of the finite aperture of the coherent optical system is ignored, its spectrum is:
[0080]
[0081] If a Zernike phase plate is added to the spectrum surface, its spatial filtering function is:
[0082]
[0083] Among them, t and are the amplitude transm...
Embodiment 3
[0129] Such as Figure 9 As shown, this embodiment provides a phase unwrapping device, which can be applied to a computer, which includes an acquisition module 901, a preprocessing module 902, a first determination module 903, a second determination module 904, and a flip replacement module 905 , processing module 906, calculation module 907, return module 908, first output module 909 and second output module 910, the specific functions of each module are as follows:
[0130] The acquiring module 901 is configured to acquire the wrapping phase interferogram.
[0131] The preprocessing module 902 is used to preprocess the wrapping phase interferogram, and convert the arccosine wrapping phase interferogram into an arctangent wrapping phase interferogram if necessary in the actual process.
[0132] The first determining module 903 is configured to determine a threshold.
[0133] The second determining module 904 is configured to determine a concave boundary wrapping the phase m...
Embodiment 4
[0147] This embodiment provides a computer device, which may be a computer, such as Figure 11As shown, it includes a processor 902 connected through a system bus 1101, a memory, an input device 1103, a display 1104, and a network interface 1105. The processor is used to provide computing and control capabilities. The memory includes a non-volatile storage medium 1106 and internal Memory 1107, the non-volatile storage medium 906 stores an operating system, computer programs and databases, the internal memory 1107 provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium, and the processor 1102 executes memory storage During the computer program, realize the phase unwrapping method of above-mentioned embodiment 1, as follows:
[0148] Obtain the package phase interferogram;
[0149] determine the threshold;
[0150] Determine the concave boundary wrapping the phase matrix through the threshold to form a flipping...
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