Figure 19From: Micro-crack detection of multicrystalline solar cells featuring an improved anisotropic diffusion filter and image segmentation techniqueImage subtraction results comparing the proposed and existing adaptive anisotropic diffusion filters. (a) Filter proposed in [20] with K0 = 2, (b) filter proposed in [21] with K0 = 80, and (c) filter proposed in this study. All diffused images used in the subtraction are obtained after t = 4.Back to article page