It is difficult to take intraoral radiographs in some patients who are intolerable to place the film in their mouth. For these patients, Newman and Friedman recommended a new technique of extraoral film placement. Here we report various cases that diagnostic imaging was performed in patients using the extraoral periapical technique. This technique was used to obtain the radiographs for the pati...

Almost all the existing stereo algorithms fall under a common assumption that corresponding color or intensity values will be similar like one another. On the other hand, it is also not that true in practice where the image color or intensity values are regularly affected by different radiometric factors like illumination direction, change in image device, illuminant color and so on. For this i...