Title :
Three-dimensional shape recovery from focused image surface
Author :
Choi, Tae S. ; Asif, Muhammad ; Yun, Joungil
Author_Institution :
Dept. of Mech., Kwangju Inst. of Sci. & Technol., South Korea
Abstract :
A new method for the three-dimensional shape recovery from image focus is proposed. The method is based on an approximation of the focussed image surface (FIS) by a piecewise curved surface which tracks the realistic FIS in image space. The piecewise curved surface is estimated by interpolation using the Lagrangian polynomial. The new method has been implemented on a prototype camera system. The experiments and their results are provided and discussed. The experimental results show that the new method gives more accurate results than the previous methods
Keywords :
CCD image sensors; cameras; image sequences; interpolation; piecewise polynomial techniques; 3D shape recovery; CCD camera system; Lagrangian polynomial; approximation; camera calibration; computer vision; depth estimation; experimental results; focused image surface; image processing; image sequence; image space; interpolation; piecewise curved surface; prototype camera system; Cameras; Detectors; Extraterrestrial measurements; Focusing; Lenses; Mechatronics; Pixel; Prototypes; Shape measurement; Space technology;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5041-3
DOI :
10.1109/ICASSP.1999.757539
