The interpolation uses near-neighbor algorithm for determining the value of a specific NaN pixel. A self-defined searching radius will be used to search the neighbors. The weighting is defined as taking more counts for closer pixels.

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If the radius is set to 3, then the neighbors will have three levels (near to far).

• Weighting: the nearest pixels will be counted three times, the middle ones will be counted twice and the farthest will only be counted once.

• No weighting: All pixel values will be averaged to determine the value of the specific NaN pixel.