HitAndMiss Class

The hit-and-miss filter represents generalization of Erosion and Dilation filters by extending flexibility of structuring element and providing different modes of its work. Structuring element may contain:

• 1 - foreground;
• 0 - background;
• -1 - don't care.

Filter's mode is set by Mode property. The list of modes and its documentation may be found in HitAndMissModes enumeration.

The filter accepts 8 bpp grayscale images for processing. Note: grayscale images are treated as binary with 0 value equals to black and 255 value equals to white.

Sample usage:

// define kernel to remove pixels on the right side of objects
// (pixel is removed, if there is white pixel on the left and
// black pixel on the right)
short[,] se = new short[,] {
    { -1, -1, -1 },
    {  1,  1,  0 },
    { -1, -1, -1 }
};
// create filter
HitAndMiss filter = new HitAndMiss( se, HitAndMiss.Modes.Thinning );
// apply the filter
filter.ApplyInPlace( image );

Initial image:

Result image:

Reference