SPOT-6 satellite image RFM orthorectification method based on FPGA hardware

• Main Authors: ZHOU GUOQING, ZHANG RONGTING, ZHU QIANG, ZHANG GUANGYUN
• Format: Patent
• Language: Chinese; English
• Published: 16.11.2021
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

The invention discloses an SPOT-6 satellite image RFM ortho-rectification method based on FPGA hardware. The method comprises the following steps: obtaining geodetic coordinates of ortho-image pixel points; performing coordinate conversion by using an RFM model, namely converting geodetic coordinates of a ground point into pixel row coordinates and column coordinates of an original image; carrying out gray scale interpolation on the orthoimage; and repeating the process until the gray values of all the pixel points on the orthoimage are obtained, thereby obtaining the image subjected to orthorectification. According to the SPOT-6 satellite image RFM ortho-rectification method based on the FPGA hardware, the FPGA serves as a hardware acceleration platform, Verilog hardware language serves as a design language, RFM ortho-rectification of remote sensing images is achieved under the condition of limited hardware resources, and the requirements for timeliness, portability and miniaturization of satellite image ort