Signal recovery in the polychromatic computed tomography model: Injectivity and complexity

Xuanzhou Chen, Ashwin Pananjady

We consider a nonlinear model motivated by polychromatic computed tomography (CT). Here, $W$ distinct $d$-dimensional signals $x_1^{\ast },\dots ,x_W^{\ast }\in {\mathbb{R}}^d$ must be recove…