| 摘要 |
Method for obtaining a panoramic image similar to a panoramic radiography obtained from a patient through X-ray emission, the method processing an acquired 3D digital volume (1) in voxel, each voxel having values of X-ray absorption, the method comprising the following steps:
- selecting a curved surface (2) in 3D volume (1);
- identifying a plurality of first points (3) on said curved surface (2) and linking each point of said identified first points (3) with a corresponding pixel of the panoramic image to be obtained, to map said first points (3) of said curved surface (2) on corresponding pixels of said panoramic image; characterized by
- associating for each identified point (P) of said first points (3) a respective set of lines (4) passing through said identified point (P), each having a different angle of incidence, said lines being contained in a solid angle (5), having said identified point (P) as vertex;
- calculating an absorption in the 3D volume (1) along each of said lines;
- attributing to said identified point (P) of said first points (3) an absorption value calculated as function of all the absorptions calculated for each of said lines of said set (4);
- attributing to said pixel linked to said identified point (P) of said first points (3) a value expressed in grayscale calculated as function of the absorption value of said identified point (P). |
