``Seeded_Hysteresis_Threshold ''---Hysteresis Thresholding using a biopsy image

purpose:

Similar to Hysteresis_Threshold with the exception that threshold parameters are based on a given biopsy rather than being set manually by user.

Mean and Standard Deviation are computed from a given biopsy of the input image. The parameters a and b are assigned by the user. This function will find all objects satisfying the threshold criteria shown below:

1. The object must contain all voxels which satisfy the following relationship.
   
2. All within the object must be connected to above selected voxels and should satisfy the following relationship.
   .

    

Note that and for this function.

input:

An 8-bit grayscale volume.
A single biopsy image (obtained using Interseg).

output:

An 8-bit binary-valued volume.

parameters:

Default parameters menu is

Cue filename (no extension) = foobar
* Value of a = 1.0
* Value of b = 1.0
* input from vol# = 0
* copy output to vol# = 0
*

comments:

 

1. This function is comparable in run time to the 2-D conn-comp and 3-D conn-comp operations.
2. A variation of Hysteresis_Threshold function.