1. A method for optically measuring a parameter of an object, said method comprising: electronically capturing a first segment of said object as a first frame of image data using a first imaging region of an image sensor array; electronically capturing a second segment of said object as a second frame of image data using a second imaging region of said image sensor array, said second imaging region being larger than said first imaging region; comparing said first frame of image data with portions of said second frame of image data to determine a potential matched portion from said portions of said second frame of image data; and determining a displaced distance of said object using the position of said potential matched portion within said second frame of image data and a reference initial position within said second frame of image data.