Bsoft function

img_back_project_one

Source:

src/img/img_backproject.c

Authors:

Bernard Heymann and Peter Leong

Description:

Back-projects a 2D image into a 3D volume.

Algorithm: 

	Requirements:

		The first image must be 2D with the orientation parameters in

			the sub-image structure.

		The orientation parameters are defined as those giving the projection,

			and is reversed for backprojection.

		The second image must be 3D and properly initialized.

	The 2D image is converted to floating point and rescaled to an average

	of zero and a standard deviation of one. The 3D map is traversed and

	the density added from the 2D image projected according to the orientation

	parameters. The origin of the new map is in the center of the volume.

Arguments:

Bimage* pa 2D image.
Bimage* pmapthe 3D volume.
float rweighflag to R-weigh the map.

Returns:

int 0.

Prototype:

int img_back_project_one(Bimage* p, Bimage* pmap, float rweigh)

Functions used:

bfree
img_back_project_one
img_fft
img_rescale_to_avg_std

Other objects included:

struct Bimage
struct Bmarker

Generated by bdoc.pl on Mon Jun 15 11:47:24 2009

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