FS - Find Statistics

PURPOSE

To compute and list statistical parameters (i.e. minimum, maximum, average, and standard deviation) of an image/volume.

SEE ALSO

FS M	[Find Statistics - within Mask]
FI	[File Information - List and retrieve file header value(s) by location]
FI H	[File Information - Retrieve file Header values by name]
LI X	[List image values - in register variables]
ST	[Set values in image header]

USAGE

.OPERATION: FS

  <or>
FS [max],[min],[img-avg],[img-std]

[This operation takes up to 4 optional register variables. On completion of the operation,

First variable receives: Maximum density in file.
Second variable receives: Minimum density.
Third variable receives: Average density.
Fourth variable receives: Standard deviation. (Deviation is obtained from number of pixels -1.)]

.INPUT FILE: PIC001
[Enter name of image file to be analyzed. If this is a whole stack then results are reported for all of the images in the stack]

NOTES

1. The statistical parameters will be listed on the terminal in interactive mode and in the results file.

2. Image can be 2D, 3D, or a whole stack.

3. If the values are already present in the header of the file then they are taken from the header. If not the values are determined by scanning the file contents.

SUBROUTINES

QSTAT, NORM3, OPFILES, NEXTFILE

CALLER

UTIL1