Defective pixel detecting and correcting method based on minimal mid-value gradient filtering
A correction method and gradient direction technology, applied in the field of image processing, can solve problems such as edge ineffectiveness, edge blurring effect, omission, etc.
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[0043] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0044] The application principle of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0045] Such as figure 1 As shown, the dead point detection and correction method based on the minimum median gradient filter in the embodiment of the present invention mainly includes the following steps:
[0046] S101: a 5×5 Bayer matrix centered on the pixel to be detected;
[0047] S102: Calculate the absolute values of the three gradients in the horizontal direction, vertical direction, diagonal direction, and anti-diagonal, respectively, based on the cen...
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