Imaeg Blur Reduction for Cell-Phone Cameras Via Adaptive Tonal Correction

Image blur occurs often when using a cell-phone camera due to handshakes or jitter. Although there exist many motion deblurring algorithms in the literature, the computational complexities of these algorithms and the assumptions considered make them unsuitable for deployment on a cell-phone camera processor. This paper presents an image blur reduction algorithm for cell-phone cameras having a low computational complexity and without making any assumption about the handshake motion. This algorithm utilizes one low-exposure image in addition to a blurred image to perform a blur reduction operation via tonal correction. The developed tonal correction approach is adaptive to the scene by taking into consideration the brightness and contrast of the blurred image. The results obtained indicate the effectiveness of this blur reduction algorithm for handshake blurred images captured by a cell-phone camera.

[1]  J. Todd Book Review: Digital image processing (second edition). By R. C. Gonzalez and P. Wintz, Addison-Wesley, 1987. 503 pp. Price: £29.95. (ISBN 0-201-11026-1) , 1988 .

[2]  A. Murat Tekalp,et al.  Superresolution video reconstruction with arbitrary sampling lattices and nonzero aperture time , 1997, IEEE Trans. Image Process..

[3]  Ying Zhang,et al.  Estimation of motion parameters from blurred images , 2000, Pattern Recognit. Lett..

[4]  N. Kopeika,et al.  Direct method for restoration of motion-blurred images , 1998 .

[5]  Gerald C. Holst,et al.  CCD arrays, cameras, and displays , 1996 .

[6]  Aggelos K. Katsaggelos,et al.  Regularized blur-assisted displacement field estimation , 1996, Proceedings of 3rd IEEE International Conference on Image Processing.

[7]  Adrian Stern,et al.  Recognition of motion-blurred images by use of the method of moments. , 2002, Applied optics.

[8]  Jon Yngve Hardeberg Acquisition and reproduction of colour images: colorimetric and multi-spectral approaches , 1999 .

[9]  Timothy M. Chan,et al.  Fun-Sort--or the chaos of unordered binary search , 2004, Discret. Appl. Math..

[10]  Harry Shum,et al.  Bayesian Correction of Image Intensity with Spatial Consideration , 2004, ECCV.

[11]  Aggelos K. Katsaggelos,et al.  Iterative restoration of fast‐moving objects in dynamic image sequences , 1996 .

[12]  Yao Jianchao Motion blur identification based on phase change experienced after trial restorations , 1999, Proceedings 1999 International Conference on Image Processing (Cat. 99CH36348).

[13]  Yitzhak Yitzhaky,et al.  Restoration of an image degraded by vibrations using only a single frame , 2000 .