Abstract Details

Name: kirti khandelwal
Affiliation: International Institute of Information Technology Bangalore
Conference ID: ASI2021_261
Title : Verilog code for cross-correlation of two images
Authors and Co-Authors : 1. Kirti Khandelwal, IIIT Bangalore 2. Jurair Hamid Bhat, IIIT Bangalore 3. Soham Das, IIIT Bangalore 4. Nanditha Rao, IIIT Bangalore 5. Phanindra DVS, IIA Bangalore 6. Rengaswamy Sridharan, IIA Bangalore
Abstract Type : Poster
Abstract Category : Instrumentation and Techniques
Abstract : Cross-correlation of two-dimensional digital images is fundamental to solar adaptive optics computations. It can be used in a simple tip-tilt correction system to compensate for the global image motion as well as in correlating sub-aperture images of a Shack-Hartmann wave-front sensor. The typical frequency of computation is about 1 kHz. While the software-based optimized cross-correlations may be sufficient when a small number of sub-apertures are used, hardware-accelerated (FPGA) correlations will be required when a large number of sub-aperture images are involved, for example in the case of the proposed National Large Solar Telescope (NLST). In this poster, we describe our hardware implementation of a basic two-dimensional correlation of two images, which has been designed in Verilog.