| 摘要 |
Embodiments of the present invention disclose a temporal noise reduction method for a noisy image and a related apparatus. In the embodiments of the present invention, determining of still/movement may be performed with reference to quantization noise of a first section to which a first pixel belongs, and therefore a probability of incorrect determining is very low; for different results of the determining of whether the first pixel is in a movement area or a still area, different frame difference thresholds applicable to a movement area and a still area are separately set, and different frame difference calculation manners are used; different blending coefficients applicable to a movement area and a still area are selected according to the different frame difference thresholds applicable to a movement area and a still area and the frame difference calculation manners; and a noise reduction blending manner is selected according to the different blending coefficients applicable to a movement area and a still area, the frame difference calculation manners, and a pixel value of the first pixel in a current frame. In this way, noise reduction processing can be implemented according to whether the noisy image is in a movement area or a still area, and a probability of detection error is very low. Therefore, the technical solutions in these embodiments of the prevent invention can be applied to multiple noise scenarios. |
