Parameters

image : 2D array, dtype=float

Current reconstruction estimate

theta : float

Angle of the projection

projection : 1D array, dtype=float

Projected values, taken from the sinogram

projection_shift : float

Shift the position of the projection by this many pixels before using it to compute an update to the reconstruction estimate

Returns

image_update : 2D array, dtype=float

Array of same shape as image containing updates that should be added to image to improve the reconstruction estimate

Compute update to a reconstruction estimate from a single projection using bilinear interpolation.

Examples

See :

Local connectivity graph

Hover to see nodes names; edges to Self not shown, Caped at 50 nodes.

Using a canvas is more power efficient and can get hundred of nodes ; but does not allow hyperlinks; , arrows or text (beyond on hover)

SVG is more flexible but power hungry; and does not scale well to 50 + nodes.

All aboves nodes referred to, (or are referred from) current nodes; Edges from Self to other have been omitted (or all nodes would be connected to the central node "self" which is not useful). Nodes are colored by the library they belong to, and scaled with the number of references pointing them

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type: <class 'fused_cython_function'>
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