Point Location
The Point Location module provides a quick way to identify specific coordinates within the image based
on their location. For example, you may want to know the position of the highest point of any non-black
pixel within the image to identify a maximum peak. Note that this module operates on a binary
image.
The module is often used after numerous morphological operations that have thresholded the image and changed
the image shape.
Note that the north, south, east, west points are calculated relative to the object's Center of Gravity point.
Interface
Instructions
1. Location - Select each point that you would like to indicate with the image. Note that for each
point a variable with a similar name is created with the X and Y coordinates of the point.
2. X,Y - Once Nearest X,Y and/or Furthest X,Y is selected the X and Y coordinate
text boxes will be enabled. You can specify the X and Y coordinates of the point
that should be used when comparing for furthest and nearest object points to the
specified point. Keep in mind that the [expression] notation
also applies in the text boxes.
3. Shape - The shape of the marker that indicates where a point has been sampled.
4. Color - The color of the marker that indicates where a point has been sampled.
5. Size - The size of the marker.
Example
| Leftmost, Rightmost and highest points indicated in red X |
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Variables
HIGHEST_LEFTMOST_X
HIGHEST_LEFTMOST_Y
HIGHEST_MIDDLE_X
HIGHEST_MIDDLE_Y
HIGHEST_RIGHTMOST_X
HIGHEST_RIGHTMOST_Y
LEFTMOST_HIGHEST_X
LEFTMOST_HIGHEST_Y
LEFTMOST_MIDDLE_X
LEFTMOST_MIDDLE_Y
LEFTMOST_LOWEST_X
LEFTMOST_LOWEST_Y
LOWEST_LEFTMOST_X
LOWEST_LEFTMOST_Y
LOWEST_MIDDLE_X
LOWEST_MIDDLE_Y
LOWEST_RIGHTMOST_X
LOWEST_RIGHTMOST_Y
RIGHTMOST_HIGHEST_X
RIGHTMOST_HIGHEST_Y
RIGHTMOST_MIDDLE_X
RIGHTMOST_MIDDLE_Y
RIGHTMOST_LOWEST_X
RIGHTMOST_LOWEST_Y
NORTHEAST_X
NORTHEAST_Y
NORTHWEST_X
NORTHWEST_Y
SOUTHEAST_X
SOUTHEAST_Y
SOUTHWEST_X
SOUTHWEST_Y
FURTHEST_X
FURTHEST_Y
NEAREST_X
NEAREST_Y
See Also
Sample Line
Sample Curve
Ultimate Points
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