Fig. 4
From: Segmentation of 3D images of plant tissues at multiple scales using the level set method
LSM for cellular segmentation. a, c, and e Show different indicator functions g and b, d, and f show the corresponding cellular segmentations. a The indicator function g based on the gradient \(f_1\) with \(\gamma =8\). b Gradient based cellular level set segmentation (\(\alpha =1\), \(\beta =0\), \(\gamma =8\), \(s=1,\) type = ‘g’). c The indicator function g based on the image intensity \(f_2\) with \(\gamma =60\). d Image based cellular level set segmentation (\(\alpha =1\), \(\beta =0\), \(\gamma =60\), \(s=1\), type = ‘i’). e The indicator function g based on second order derivatives of the image \(f_3\) with \(\gamma =0.8\). f Hessian based cellular level set segmentation (\(\alpha =1\), \(\beta =0\), \(\gamma =0.8\), \(s=1\), type = ‘h’)