Method for acquiring phase gradient correlated quality diagram for two-dimensional phase unwrapping

• Main Authors: ZHAO WANCHENG, LU YUANGANG
• Format: Patent
• Language: Chinese; English
• Published: 04.05.2011
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; CALCULATING; COMPUTING; COUNTING; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; ELECTRIC DIGITAL DATA PROCESSING; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The invention relates to a method for acquiring a phase gradient correlated quality diagram for two-dimensional phase unwrapping, comprising the following steps: firstly, respectively solving phase gradient diagrams of an x direction and a y direction of a wrapped phase diagram; then respectively carrying out correlated processing on each point of the phase gradient diagrams of the x direction and the y direction; selecting templates with same sizes by respectively taking a current processing point and a point with a special distance from the current processing point in the phase gradient diagrams as centers, and carrying out correlated computation on the two templates; and finally, solving the sum of correlated results corresponding to each point element in the phase gradient diagrams ofthe x direction and the y direction, and taking the sum as a quality value to obtain the phase gradient correlated quality diagram. The phase gradient correlated quality diagram can be directly led out from the wrapped phase