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| File Edit Options Process Analyze Video Macros Stacks SEM SPM Windows Help |
Analyze Particles Show Results Show Histogram Plot Profile Surface Plot Options Set Scale Preset Scale Calibrate Redo Measurement Delete Measurement Reset Restore Selection Label Selection Gradient Values Gradient Histogram Radial Distribution Azimuthal Distribution
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Calculates the
local gradient at each pixel of the image and creates a stack of two
images, the first displaying the magnitude of the gradient
(0°-90°) and the second the uphill direction (0°-360°)
relative to a chosen cardinal point. Moving the cursor over the first
image produces a display in the Info
window of both the gradient and
direction. The number of neighbouring pixels used to calculate the
gradient can be set (from 1 up to half of the smallest dimension of the
ROI). If a ROI is too close to the edge of the image to calculate a
slope over the number of pixels specified, then the ROI will be reduced
in size as necessary. Press the option key to bypass the dialog box.
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Steve Barrett November 2014 |
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