1. A method of imaging a specimen by using a scanning electron microscope, comprising the steps of: inputting coordinates of an evaluation point on the specimen on which patterns are formed; acquiring, from CAD data, design layout information of a pattern formed in an area containing said evaluation point on said specimen; selecting, as input information, part or all of imaging parameters such as processing parameter, user request specifications, history information, the number, coordinates, size, shape and imaging sequence of imaging points each for addressing, auto-focus or auto-brightness/contrast, electron beam vertically incident coordinates and imaging conditions; selecting, as output information, part or all of imaging parameters such as the number, coordinates, size, shape and imaging sequence of imaging points each for addressing, auto-focus or auto-brightness/contrast, electron beam vertically incident coordinates, imaging conditions and evaluation value or preferential order of the imaging point or imaging sequence; calculating the selected output information by using the value or range of the inputted coordinate information of the evaluation point, the acquired design layout information and the value or range of said selected input information; storing both the imaging parameters of said input information and output information; storing the pattern at said evaluation point or patterns at imaging points as registry templates; and sequentially imaging patterns formed on said specimen on the basis of said stored imaging parameters and registry templates.