# Missing Pixel

Substitute pixels of unknown value with pixels of a fixed value or pixels whose values are based on the analysis of the surrounding pixels.

See the topic Missing Pixel for details. Configure the following options:

Option | Description
--- | ---
Value Computation | Choose the method for determining the value of each missing pixel: NeighborMinimum: Use the minimum greyscale value of the neighboring pixels, either vertically or horizontally, based on the setting for Direction. NeighborMaximum: Use the maximum greyscale value of the neighboring pixels, either vertically or horizontally, based on the setting for Direction. NeighborInterpolation: Calculate and use an average greyscale value of neighboring pixels in both the vertical and horizontal direction. Global: Use the method specified by Global Value Mode.
Direction | The direction in which missing pixel analysis is to be performed: Horizontal: By rows Vertical: By columns Both: Both vertically and horizontally, with the result derived from the results of both stages
Global Value Mode | Choose the manner in which the missing is determined when Value Computation is set to Global : Fixed: Use the Fixed Global Value ImageMinimum: Use the minimum greyscale value of all valid pixels in the input image. ImageMaximum: Use the maximum greyscale value of all valid pixels in the input image. ImageAverage: Use the average greyscale value of all valid pixels in the input image.
Fixed Global Value | The pixel value to use when Global Value Mode is set to Fixed.