Package 

Class MorphApp

  • 
public class MorphApp

    Composite image processing operations.

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description
      public @interface MorphApp.TophatType

    • Method Summary

      Modifier and Type Method Description
      static Pix pixTophat(Pix pixs, int hsize, int vsize, int type) Performs a tophat transform.
      static Pix pixFastTophatBlack(Pix pixs) Performs a tophat-like operation emphasizing small dark regions usingdefault values.
      static Pix pixFastTophatWhite(Pix pixs) Performs a tophat-like operation emphasizing small bright regions usingdefault values.
      static Pix pixFastTophat(Pix pixs, int xsize, int ysize, int type) Performs a tophat-like operation.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Method Detail

      • pixTophat

         static Pix pixTophat(Pix pixs, int hsize, int vsize, int type)

        Performs a tophat transform.

        Notes:

        • Sel is a brick with all elements being hits
        • If hsize = vsize = 1, returns an image with all 0 data.
        • The L_TOPHAT_WHITE flag emphasizes small bright regions, whereasthe L_TOPHAT_BLACK flag emphasizes small dark regions. The L_TOPHAT_WHITEtophat can be accomplished by doing a L_TOPHAT_BLACK tophat on theinverse, or v.v.
        Parameters:
        pixs - Source pix (8bpp)
        hsize - (of Sel; must be odd; origin implicitly in center)
        vsize - (ditto)
        type - L_TOPHAT_WHITE: image - opening or L_TOPHAT_BLACK: closing - image

      • pixFastTophatBlack

         static Pix pixFastTophatBlack(Pix pixs)

        Performs a tophat-like operation emphasizing small dark regions usingdefault values.

        Parameters:
        pixs - Source pix (8bpp)

      • pixFastTophatWhite

         static Pix pixFastTophatWhite(Pix pixs)

        Performs a tophat-like operation emphasizing small bright regions usingdefault values.

        Parameters:
        pixs - Source pix (8bpp)

      • pixFastTophat

         static Pix pixFastTophat(Pix pixs, int xsize, int ysize, int type)

        Performs a tophat-like operation.

        Notes:

        • Don't be fooled. This is NOT a tophat. It is a tophat-likeoperation, where the result is similar to what you'd get if you used anerosion instead of an opening, or a dilation instead of a closing.
        • Instead of opening or closing at full resolution, it does a fastdownscale/minmax operation, then a quick small smoothing at low res, areplicative expansion of the "background" to full res, and finally aremoval of the background level from the input image. The smoothingstep may not be important.
        • It does not remove noise as well as a tophat, but it is 5 to 10times faster. If you need the preciseness of the tophat, don't use this.
        • The L_TOPHAT_WHITE flag emphasizes small bright regions, whereasthe L_TOPHAT_BLACK flag emphasizes small dark regions.
        Parameters:
        pixs - Source pix (8bpp)
        xsize - width of max/min op, smoothing; any integer >= 1
        ysize - height of max/min op, smoothing; any integer >= 1
        type - L_TOPHAT_WHITE: image - min, or L_TOPHAT_BLACK: max - image