Measurements > Intercepts

Random Lines

Measures metrics such as mean intercept by drawing a specified number of random or rotating lines through the features in the Current Image.

1. Number of Lines

Number of lines to draw

2. Noise Removal

Method for removing small intercepts

  • Reject < / =: Simply ignores intercepts below a certain length
  • Fit to Noise: (Only for “Random Lines”) Fits an exponential to the first few bins and subtracts this exponential out the intercept histogram.

3. Noise Thresholds

Thresholds for either the minimum intercept length (for “Reject </=”), the number of bins to use for “Fit to Noise”

4. Partial Intercepts

Choose whether to discard or keep intercepts that start or end at an image edge

5. Save All Intercepts

Choose whether to save all intercept lengths into text files

6. Lines Along Vector

Choose whether to draw all “Random Lines” along a specific direction. Starting points of each line will still be random.

Rotating Lines

Measures metrics such as mean intercept by rotating a grid of specified number of lines through the features in the Current Image.

1. Number of Lines

Number of lines to draw

2. Noise Removal

Method for removing small intercepts

  • Reject < / =: Simply ignores intercepts below a certain length
  • Fit to Noise: (Only for “Random Lines”) Fits an exponential to the first few bins and subtracts this exponential out the intercept histogram.

3. Noise Thresholds

Thresholds for either the minimum intercept length (for “Reject </=”), the number of bins to use for “Fit to Noise”

4. Partial Intercepts

Choose whether to discard or keep intercepts that start or end at an image edge

5. Save All Intercepts

Choose whether to save all intercept lengths into text files

6. Lines Along Vector

Disabled in “Rotating Lines” mode

7. Rotation Range

Range of angles through which to rotate the grid of parallel lines

8. Rotation Step Size

Increment with which to step though angle range to rotate the grid of parallel lines

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