Removal of Optical Fiber Interference in Color Micro-Endoscopic Images
CBMS '98 Proceedings of the Eleventh IEEE Symposium on Computer-Based Medical Systems
Physically Motivated Reconstruction of Fiberscopic Images
ICPR '06 Proceedings of the 18th International Conference on Pattern Recognition - Volume 03
High resolution image formation from low resolution frames using Delaunay triangulation
IEEE Transactions on Image Processing
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Fiber optics are widely used in flexible endoscopes which are indispensable for many applications in diagnosis and therapy. Computer-aided use of fiberscopes requires a digital sensor mounted at the proximal end. Most commercially available cameras for endoscopy provide the images by means of a regular grid of color filters what is known as the Bayer Pattern. Hence, the images suffer from false colored spatial moiré, which is further stressed by the downgrading fiber optic transmission yielding a honey comb pattern. To solve this problem we propose a new approach that extends the interpolation between known intensities of registered fibers to multi channel color applications. The inventive idea takes into account both the Gaussian intensity distribution of each fiber and the physical color distribution of the Bayer pattern. Individual color factors for interpolation of each fiber area make it possible to simultaneously remove both the comb structure from the fiber bundle as well as the Bayer pattern mosaicking from the sensor while preserving depicted structures and textures in the scene.