Filtering method, device and equipment and computer readable storage medium

The invention discloses a filtering method, device and equipment and a computer readable storage medium, and relates to the technical field of image processing, and the method comprises the steps: calculating the overall gradient of each pixel point in a filtering window; according to the total gradient of each pixel point, calculating to obtain a target value; the target value is used for representing a fluctuation condition of a pixel value in the filtering window; adjusting the filtering window according to the target value; calculating the total gradient of each pixel point in the adjusted filtering window; performing normalization processing on the total gradient of each pixel point in the adjusted filtering window to obtain a filtering weight corresponding to each pixel point in the adjusted filtering window; and calculating a new pixel value of the target pixel point in the adjusted filtering window according to the filtering weight and the pixel value corresponding to each pixel point in the adjusted