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- W2017067574 abstract "This paper proposes a new method to extract distance between an object and a TV-camera from a defocussed image by using gray level gradient. In this work, image clearness is defined as a measure of the gray level gradient as a whole. The defocussed image is not clear in the sense that the clearness of the defocussed image is of a low value, compared with the focussed image. First, the image clearness of a defocused image is discussed from the view-point that image clearness is represented by changes of the gray level in the local image. Secondly, the linear and the nonlinear clearness of the image are defined as the mean of gray level gradient in the image. Finally, a satisfactory result is obtained, extracting distance between an object and a TV-camera using clearness." @default.
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- W2017067574 date "1988-12-16" @default.
- W2017067574 modified "2023-10-05" @default.
- W2017067574 title "Extracting Distance Using Gray Level Gradient On The Defocused Image" @default.
- W2017067574 doi "https://doi.org/10.1117/12.948461" @default.
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