Patent ID: 6307951
Filing Date: 2001-10-23
Classification: G06T

Abstract:
A moving body detection method which detects a plurality of unmarked moving bodies by processing image data for the plurality of moving bodies, said method comprising:determining a mean brightness from the image data;calculating spatial phases in terms of a time series, said spatial phases being obtained by an operational formula tan.sup.-1 (AS/AC) or cot.sup.-1 (AC/AS) (where AC is a Fourier cosine transformation divided by the mean brightness and AS is a Fourier sine transformation divided by the mean brightness) in a case where image signals obtained as aggregates of picture elements on the basis of picture element data constituting said image data from a video camera which is in a fixed position are subjected to a spatial Fourier transformation in a direction which is not perpendicular to a direction of movement of said plurality of moving bodies; anddetecting said plurality of moving bodies on the basis of changes in said calculated spatial phases in said aggregates of picture elements.