Patent ID: 6674913
Filing Date: 2004-01-06
Classification: G06T

Abstract:
An imaging method capable of obtaining 2-dimensional high-resolution image for a controllable rotating target during a short image processing time without degrading the quality of the image, wherein the imaging method is employed in an imaging apparatus comprising means for controlling the imaging apparatus and processing a signal reflected from the target, means for generating a reference signal, means for transmitting and receiving the reference signal and means for rotating the target, comprising the steps of:a) acquiring initial information concerning the imaging apparatus and the target; b) calculating parameters for use in rotating the target, the parameters including a rotational increment of the rotating means and a total rotation angle thereof; c) computing a start frequency Æ’sk and a step frequency &dgr;Æ’k; d) measuring data for the target to store them based on the values obtained in the steps a) to c); e) determining whether or not the step d) is completed; f) if the determination result is negative, repeating the steps a) to e); and, if otherwise, obtaining the 2-dimensional high-resolution image by using an image reconstruction algorithm; and g) displaying the 2-dimensional high-resolution image, wherein the image reconstruction algorithm applies a Fast Fourier transform (FFT) process to the measured data to reconstruct the 2-dimesional high-resolution image without interpolation.