Abstract
Estimating the relative 3D shape of the object is an important research topic in the area of computer vision, and is being used in a wide range of applications such as robot vision, computer games, animations, broadcast, and many more. Several active and passive methods have been proposed for recovering 3-D shape of the objects from their 2-D images. Passive methods like Shape from Focus (SFF), Shape from Defocus (SFD), Shape from Shading (SFS) etc are cheap and more effective, requiring stack of images by a single camera. In this paper, we have developed a simple and fast algorithm for SFF to calculate depth. The pixel intensities in the image sequences are modified by subtracting the maximum of first or last frame in the image sequence. A low pass filter is applied on these modified values to eliminate the noise. The proposed algorithm is fast and precise, as compared to earlier SFF methods.
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Helmli, F.S., Scherer, S.: Adaptive Shape from Focus with and Error Estimation in Light Microscopy. In: Proceedings of the 2nd International Symposium on Image and Signal Processing and Analysis, ISAP 2001, June 2001, pp. 188–193 (2001)
Subbarao, M., Choi, T., Nikzad, A.: Focusing Techniques. Optical Eng. 32(11), 2824–2836 (1993)
Mannan, S.M., Saeed, A., Choi, T.S.: A Fast Algorithm for 3D Camera using Pixel-Intensities as a model for Depth Measurement. In: Proceedings of International Conference on Consumer Electronics (ICCE) 2008, Las Vegas, Nevada USA, January 11-13, pp. 4–24 (2008)
Noguchi, M., Nayar, S.K.: Microscopic Shape from Focus Using Active Illumination. In: IEEE International Conference on Pattern Recognition, October 1994, pp. 147–152 (1994)
Asif, M., Malik, A.S., Choi, T.S.: 3-D Shape Recovery from Image Defocus Using Wavelet Analysis. In: ICIP 2005, IEEE International Conference on Image Processing, September 2005, vol. 1 (2005)
Asif, M., Choi, T.S.: Shape from Focus using Multilayer Feed-forward Neural Networks. IEEE Transactions on Image Processing 10(11) (November 2001)
Ahmed, M.B., Choi, T.S.: A Heuristic Approach for Finding Best Focused Shape. IEEE Transactions on Circuit and System for Video Technology 15(4) (April 2005)
Ahmed, M.B., Choi, T.S.: Fast and Accurate 3-D Shape from Focus Using Dynamic Programming Optimization Technique. In: ICASSP 2005, IEEE International Conference on Acoustics, Speech and Signal Processing, March 2005, vol. 2 (2005)
Subbarao, M., Choi, T.: Accurate Recovery of Three-Dimensional Shape from Image Focus. IEEE Trans.on Pattern Analysis and Machine Intelliegence 17(3), 266–274 (1995)
Nayar, S.: Shape from Focus System for Rough Surface. In: Proc. IEEE Computer Soc. Conf. Computer Vision and Pattern Recognition, Champaign, III, June 1992, pp. 302–308 (1992)
Nayar, S.K., Nakagawa, Y.: Shape from Focus System. IEEE Transactions on Pattern Analysis and Machine Intelligence 16(8), 824–831 (1994)
Choi, T.S., Asif, M., Yun, J.: Three-Dimensional Shape Recovery from Focused Image Surface. In: IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 1999, March 1999, vol. 6 (1999)
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Mannan, S.M., Mutahira, H., Choi, TS. (2009). Shape Recovery by Focus Based Methods Using Low Pass Filter. In: Ślęzak, D., Kim, Th., Chang, A.CC., Vasilakos, T., Li, M., Sakurai, K. (eds) Communication and Networking. FGCN 2009. Communications in Computer and Information Science, vol 56. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-10844-0_62
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DOI: https://doi.org/10.1007/978-3-642-10844-0_62
Publisher Name: Springer, Berlin, Heidelberg
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