Grainstats

At a Glance - Measures Objects

TopoStats automatically tries to measure the grains (objects of interest) found in the grain finding section, in your AFM images, and outputs them into the all_statistics.csv file.

The metrics are briefly summarised in the table below:

Column Name	Description	Data Type
center_x/y	The center of the grain.	float
radius_min/max/mean/median	The distance from the center to each pixel on the perimeter.	float
height_min/max/mean/median	The pixel values underlying the grain mask.	float
area	The area of the pixel-wise grain mask.	float
volume	Volume of the pixel-wise grain mask.	float
area_cartesian_bbox	The area of a box bounding the grain along cardinal directions.	float
smallest_bounding_width/length	The shortest bounding box length and perpendicular width of the grain in non-cardinal directions.	float
smallest_bounding_area	The area of the smallest possible box bounding the grain.	float
aspect_ratio	Ratio of the smallest bounding width to smallest bounding length.	float
max/min_feret	The largest and shortest distance of the calipers rotating the grain between calipers. See feret diameter.	float