MATLAB: Video processing command help

command linedoubleimageimage processingvideo processing

Can anyone tell me what the following command does?
imgI = double(imread(imgIFile))
Thanks

Best Answer

imglFile : String variable, which contains the name of an image file
imread: Read the image file into a Matlab array
double: convert the array to the double type.
The whole line imports the contents of the image file into a DOUBLE array. "help imread", "help double" would be helpful also.