RADIOMETRIC CALIBRATION OF MARS HiRISE HIGH RESOLUTION IMAGERY BASED ON FPGA
- 1Zhengzhou Institute of Surveying and Mapping, Zhongyuan District, Zhengzhou, 450000 Henan, China
- 2Information Science and Technology Institute, Jinshui District, Zhengzhou, 450000 Henan, China
Keywords: Mar Exploration, Radiometric Calibration, Field Program Gate Array (FPGA), Digital Signal Processor (DSP), Linear Pushbroom Imagery; HiRISE
Abstract. Due to the large data amount of HiRISE imagery, traditional radiometric calibration method is not able to meet the fast processing requirements. To solve this problem, a radiometric calibration system of HiRISE imagery based on field program gate array (FPGA) is designed. The montage gap between two channels caused by gray inconsistency is removed through histogram matching. The calibration system is composed of FPGA and DSP, which makes full use of the parallel processing ability of FPGA and fast computation as well as flexible control characteristic of DSP. Experimental results show that the designed system consumes less hardware resources and the real-time processing ability of radiometric calibration of HiRISE imagery is improved.