This function simulates the shift-variant defocus blur due to the limited depth of field of a digital camera. It works my mapping a source irrandiance (image) to a given depthmap and generates an image sequence at different focus positions using a gaussian PSF derived from geometrical optics. For a detailed description of its working principles, refer to appendix B in [1]. This defocus model has been used in [2] and [3]. For a demo, simply run 'blurdemo' at the matlab prompt.
References:
[1] S. Pertuz, Modeling and applications of the focus cue in conventional digital cameras. PhD thesis. Universitat Rovira i Virgili, 2013.
[2] S. Pertuz, D. Puig, M. A. Garcia, Analysis of focus measure operators for shape-from-focus, Pattern Recognition, 46(5): 1415-1432, 2013.
[3] S. Pertuz, D. Puig, M. A. Garcia, Reliability measure for shape-from-focus, Image and Vision Computing, Volume 31(10):725–734, 2013
Cite As
Said Pertuz (2024). Defocus simulation (https://www.mathworks.com/matlabcentral/fileexchange/55095-defocus-simulation), MATLAB Central File Exchange. Retrieved .
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- Image Processing and Computer Vision > Image Processing Toolbox > Image Segmentation and Analysis > Image Transforms >
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Acknowledgements
Inspired: Shape from focus
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1.0.0.0 | - Display figure has been updated |