Goldstein pyramid construction method for SAR interferogram processing

• Main Authors: ZHUANG HUIFU, FAN HONGDONG, TAN ZHIXIANG, CHI BOWEN, ZHENG MEINAN, ZHANG KEFEI, DENG KAZHONG
• Format: Patent
• Language: Chinese; English
• Published: 26.02.2021
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

The invention discloses a Goldstein pyramid construction method for SAR interferogram processing, and is suitable for the field of image processing. The method comprises the steps of setting the complex interferogram I0 of the SAR image as the 0th layer image G0 of the Goldstein pyramid; setting the maximum number L of layers for performing Goldstein pyramid transformation on the complex interferogram G0; setting the kernel size N of a frequency domain Goldstein low-pass filter; utilizing a frequency domain Goldstein filter with the size of N to carry out slip filtering processing on the ith layer of complex interferogram Gi of the pyramid; carrying out down-sampling on the filtered interferogram to obtain the (i + 1) th layer of Goldstein pyramid Gi + 1; and repeating the above steps until an L < th > layer of Goldstein pyramid GL is obtained, and combining the 0L < th > layer of pyramid images to obtain a Goldstein pyramid. According to the method, the Goldstein pyramid image of thecomplex interferogram of