Fig. 3From: Efficient implementation of a local tomography reconstruction algorithmZoom on the region of interest defined by the blue circle in Fig. 2. The support is \(136^2\) pixels. Left ground-truth zoom. Right reconstruction with padded FBP. The image is brighter close to the center than far from the center, which is characteristic of the cupping effect. Contrast was adapted with respect to the center of the imagesBack to article page