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EURASIP Journal on Image and Video Processing
Figure 4 | EURASIP Journal on Image and Video Processing

Figure 4

From: A framework for measuring sharpness in natural images captured by digital cameras based on reference image and local areas

Figure 4

The centers of the correspondence blocks are approximated from the correspondence feature points. (a) The reference and (b) test images have been cropped using the same pixel coordinate values. The lines denote vectors whose lengths and directions are calculated from the reference image. The points denote correspondence-feature points. The crosses denote correspondence-area centers.

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