shape of an image :

Shape factors are dimensionless quantities used in image analysis and microscopy that numerically describe the shape of a particle, independent of its size. Shape factors are calculated measured dimensions, such as diameter, chord lengths, area, perimeter, centroid, moments, etc.

-shape of an image :

Shape factors are dimensionless quantities used in image analysis and microscopy that numerically describe the shape of a particle, independent of its size. Shape factors are calculated　measured dimensions, such as diameter, chord lengths, area, perimeter, centroid, moments, etc.