Here is a sample program in JavaScript that takes an image as input and applies salt and pepper noise using probability pa
and pb
respectively.
index.tsx549 chars26 lines
This function takes an imgData
object (which has the width
, height
and data
properties of the image), as well as the probabilities pa
and pb
for salt and pepper noise respectively.
For each pixel in the image, a random number is generated between 0 and 1. If this number is less than pa
, then the pixel is set to white (255) to simulate salt noise. If the number is less than amount
(which is the sum of pa
and pb
), but greater than pa
, then the pixel is set to black (0) to simulate pepper noise. If the number is greater than amount
, then the pixel is left unchanged.
Finally, the function returns the modified imgData
object.
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