Package net.sourceforge.jiu.ops

Class LookupTableOperation

java.lang.Object
net.sourceforge.jiu.ops.Operation
net.sourceforge.jiu.ops.ImageToImageOperation
net.sourceforge.jiu.ops.LookupTableOperation
Direct Known Subclasses:
Brightness, Contrast, EqualizeHistogram, GammaCorrection, NormalizeHistogram
public abstract class LookupTableOperation extends ImageToImageOperation
An operation that replaces samples with values taken from a lookup table. Operations where each pixel is treated independently from its neighbors and where a pixel value is always mapped to the same new pixel value can be implemented this way.
Since:
0.6.0
Author:
Marco Schmidt

  • Field Details

    • intTables

      private int[][] intTables

    • numTables

      private int numTables

  • Constructor Details

    • LookupTableOperation

      public LookupTableOperation()
      Creates a LookupTableOperation for one lookup table.

    • LookupTableOperation

      public LookupTableOperation(int numTables)
      Creates an object of this class, calling the super constructor with two null arguments and allocates space for the argument number of lookup tables.
      Parameters:
      numTables - number of tables to be used in this operation

  • Method Details

    • getNumTables

      public int getNumTables()
      Returns the number of tables in this operation.
      Returns:
      number of tables

    • getTable

      public int[] getTable(int channelIndex)
      Returns one of the internal int lookup tables.
      Parameters:
      channelIndex - the zero-based index of the table to be returned; from 0 to getNumTables() - 1
      Returns:
      the channelIndex'th table

    • prepareImages

      public void prepareImages() throws MissingParameterException, WrongParameterException
      Throws:
      MissingParameterException
      WrongParameterException

    • process

      public void process() throws MissingParameterException, WrongParameterException
      Description copied from class: Operation
      This method does the actual work of the operation. It must be called after all parameters have been given to the operation object.
      Overrides:
      process in class Operation
      Throws:
      MissingParameterException - if any mandatory parameter was not given to the operation
      WrongParameterException - if at least one of the input parameters was not initialized appropriately (values out of the valid interval, etc.)

    • process

      private void process(IntegerImage in, IntegerImage out)

    • process

      private void process(IntegerImage in, IntegerImage out, int CHANNEL_INDEX, int tableIndex, int processedItems, int TOTAL_ITEMS)

    • setNumTables

      public void setNumTables(int numberOfTables)
      Resets the number of tables to be used in this operation to the argument and drops all actual table data initialized so far. After a call to this method, getTable(int) will return null as long as no new table data is provided via setTable(int, int[]) or setTables(int[]).
      Parameters:
      numberOfTables - the new number of tables for this operation, must be 1 or larger
      Throws:
      IllegalArgumentException - if the number is zero or smaller

    • setTable

      public void setTable(int channelIndex, int[] tableData)
      Provides a new lookup table for one of the channels.
      Parameters:
      channelIndex - the index of the channel for which a table is provided; must be at least 0 and smaller than getNumTables()
      tableData - the actual table to be used for lookup
      Throws:
      IllegalArgumentException - if the channel index is not in the valid interval (see above)

    • setTables

      public void setTables(int[] tableData)
      Sets the tables for all channels to the argument table. Useful when the same table can be used for all channels.
      Parameters:
      tableData - the data that will be used as lookup table for all channels