Paper
27 August 2010 Geometric superresolution using CCD-mask
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Abstract
Resolution of any image taken by CCD camera is generally lower in resolution in comparison with original object. Assuming the imaging system as diffraction limited - the major component responsible for this resolution limitation is the pixel geometry in CCD. The area, shape of pixel and distance between them (inter-pixel spacing) together contributes in reduction of the resolution of the final electronic image. A number of techniques have been reported in the literature to overcome this geometric resolution limitation. We have proposed a novel geometric superresolution technique in which a CCD-mask is displaced over CCD-plane by one pixel in subpixel steps - both in x and y directions. The resultant processed superresolved image is improved in resolution by the subpixel steps factor. Simulation results in 2D have been presented which shows improvement in resolution. This superresolution technique can be applied to microscopy, medical imaging, satellite imaging and astronomy.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ihtsham U. Haq and Asloob A. Mudassar "Geometric superresolution using CCD-mask", Proc. SPIE 7800, Image Reconstruction from Incomplete Data VI, 78000J (27 August 2010); https://doi.org/10.1117/12.862049
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KEYWORDS
Image resolution

Super resolution

Image processing

CCD cameras

Imaging systems

Charge-coupled devices

Medical imaging

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