Example of grid file for distortion correction

Format of grid file

begin gridgroup "Image deformation grids"
	enabled: yes
	order_index: 0
	camera_name: "DIGITAL"
	description: "BINGO self calibration grid - from all additional parameters"
	
	begin grid "Image deformation grid 1"
		enabled:       yes
		inverse_scale: 1.000000
		columns:          41
		rows:             41
		description:   "Created by program BgExport"
	
		begin gridpoints
			   -59.6101    -59.6101    -60.0000    -60.0000
			   -56.7156    -59.7006    -57.0000    -60.0000
			   -53.7937    -59.7708    -54.0000    -60.0000
			   -50.8510    -59.8247    -51.0000    -60.0000
			   -47.8928    -59.8659    -48.0000    -60.0000
			   ...
			   ...
				32.9789     59.9616     33.0000     60.0000
				35.9711     59.9518     36.0000     60.0000
				38.9600     59.9385     39.0000     60.0000
				41.9446     59.9208     42.0000     60.0000
				44.9229     59.8972     45.0000     60.0000
				47.8928     59.8659     48.0000     60.0000
				50.8510     59.8247     51.0000     60.0000
				53.7937     59.7708     54.0000     60.0000
				56.7156     59.7006     57.0000     60.0000
				59.6101     59.6101     60.0000     60.0000
		end gridpoints
	end grid
end gridgroup