Method and apparatus for scannerless range image capture using p

Details Method and apparatus for scannerless range image capture using p Method and apparatus for scannerless range image capture using p

1999-06-29

2000-09-12

Perkey, W. B.

Photography

With exposure objective focusing means, focusing aid, or...

396155, 396222, 396311, 396429, 356 3, 382106, G03B 1503, G03B 700, G03B 1724, G06K 900

Patent

active

061189464

ABSTRACT:
A method for image capture and estimation of range information is provided which uses photographic film as the image capture mechanism. A plurality of identical images are captured on film yielding an image bundle wherein each image in the image bundle is captured with a different phase offset. Fiducial marks are placed on the photographic film between adjacent images in the image bundle. The image bundle is developed and the developed images are scanned. The images of the image bundle are then registered by aligning the fiducial marks. The distance from the image capture device to object(s) in the images of the image bundle can then be estimated using the different phase offsets for each image. The range at a pixel location is estimated by selecting the intensity of the pixel at that location of each image and performing a best fit of a sine wave of one period through the points. The phase of the resulting best fitted sine wave is then used to estimate the range to the object based upon the wave length of the illumination frequency.

REFERENCES:
patent: 4935616 (1990-06-01), Scott
patent: 5193124 (1993-03-01), Subbarao

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