JND prediction method and device based on direction weight, computer equipment and storage medium
A prediction method, JND technology, applied in the field of image and video coding, can solve the problem of not taking into account the effect of blurring and masking
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[0056] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0057] In one embodiment, such as figure 1 As shown, a JND prediction method based on direction weight is provided, which includes:
[0058] Step 102, acquiring an input image to be predicted;
[0059] Step 104, using the Prewitt operator to calculate the horizontal direction gradient and the vertical direction gradient of the pixel in the image to obtain the direction of the corresponding pixel;
[0060] Step 106, calculating the weighting factors corresponding to different directions according to the sensitivity difference of human eyes to different directions;
[006...
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