Distance measuring method and a distance measuring apparatus

Details Distance measuring method and a distance measuring apparatus Distance measuring method and a distance measuring apparatus

G - Physics

01

B

G01B 11/14 (2006.01) G01C 3/32 (2006.01) G02B 7/36 (2006.01) H04N 5/232 (2006.01)

Patent

CA 2078638

A distance data is obtained from an object to a lens by obtaining an image of the object by an image input unit for forming an image of the object through the lens on an image receiving plane. The present method inputs two observed images Is and Is' with different blurs from the image input unit by making a position of the lens, a position of the image receiving plane with regard to the article different by a minute distance .DELTA.z and performs a filtering process by applying filter to the two input observed images Is and Is', thereby providing two output images Fs and Fs' and calculates the distance a up to the object by using two output images Fs and Fs' obtained by the filtering process based on the relation between the two output images Fs and Fs' and radius s of the blur and the distance a from the lens to the object.

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