Robust Phase Unwrapping for Near-Field mmWave Phase Imaging: An Integrated TGV and NLSS Approach (opens in new tab)

Near-field millimeter-wave (mmWave) phase imaging is a powerful nondestructive testing (NDT) technique. Phase unwrapping (PU), a critical step in this process, directly determines the accuracy of subsequent defect evaluation. Conventional two-stage denoising and PU algorithms often suffer from error propagation, while existing integrated methods are prone to generating erroneous edges when applied to near-field mmWave data. To address these challenges, this article proposes a novel framework ...