M.Sc Thesis

M.Sc StudentStarer Elad
SubjectCanceling Visual Artifacts in an Endoscopic
DepartmentDepartment of Electrical and Computer Engineering
Supervisor PROFESSOR EMERITUS Arie Feuer
Full Thesis text - in Hebrew Full thesis text - Hebrew Version


Endoscopy is a minimal invasive procedure used to evaluate the interior of the body by inserting a small diameter scope, usually through natural openings. Fiberscope is a common accessory for Endoscopy. It is a bundle, assembled of many thin fibers.  Each fiber transmits an intensity level from the interior of the body to the exterior side. The output of the fiberscope is sampled by a digital camera and is displayed.

Sampling by the camera causes degradation in the image quality beyond the sampling by the fiber bundle. Two major degradations are the Moiré effect and a honey comb structure which appear upon the original object.

In our work we introduce a method to reconstruct the fibers intensity level from the camera output. This is done by formulating and solving a sparse LS problem.

Finally, we demonstrate the feasibility of our methods through some simulation and lab experiment results.  In addition, after the reconstruction, some other picture enhancement methods, like SR, can be achieved and these too are demonstrated.