Fig. 1: Examples of real point spread functions (PSF’s) that cause out-of-focus image blur. | Communications Engineering

Fig. 1: Examples of real point spread functions (PSF’s) that cause out-of-focus image blur.

From: Fast autofocusing based on single-pixel moment detection

Fig. 1

Circular PSF of a fully open aperture (left) and polygonal PSF’s of partially open aperture. The shape is given by diaphragm blades. The images of the PSF’s were obtained as photos of a single bright point far from the focus distance.

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