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De-velopment of Demosaicking Techniques for Multi-Spectral Imaging Using Mosaic Focal Plane Arrays
| Content Provider | Semantic Scholar |
|---|---|
| Author | Baone, Gaurav Ashok |
| Copyright Year | 2005 |
| Abstract | The use of mosaicked array technology in commercial digital cameras has made them smaller, cheaper and mechanically more robust. In a mosaicked sensor, each pixel detector is covered with a wavelength-specific optical filter. Since only one spectral band is sensed per pixel location, there is an absence of information from the rest of the spectral bands. These unmeasured spectral bands are estimated by using information obtained from the neighborhood pixels. This process of estimating the unmeasured spectral band information is called demosaicking. The demosaicking process uses interpolation strategies to estimate the missing pixels. Sophisticated interpolation methods have been developed for performing this task in digital color cameras. In this thesis we propose to evaluate the adaptation of the mosaicked technology for multi-spectral cameras. Existing multi-spectral cameras use traditional methods like imaging spectrometers to capture a multi-spectral image. These methods are very expensive and delicate in nature. The objective of using the mosaicked technology for multi-spectral cameras is to reap the same benefits it offers in the commercial digital color cameras. However, the problem in using the mosaicked technology for multi-spectral images is the huge amount of missing pixels that need to be estimated in order to form the multi-spectral image. The estimation process becomes even more complicated as the number of bands in the multi-spectral image increases. Traditional demosaicking algorithms cannot be used because they have been specifically designed to suit three-band color images. This thesis focuses on developing new demosaicking algorithms for multispectral images. The existing demosaicking algorithms for color images have been extended for multi-spectral images. A new variation of the bilinear interpolation |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://trace.tennessee.edu/cgi/viewcontent.cgi?article=3050&context=utk_gradthes&httpsredir=1&referer= |
| Alternate Webpage(s) | https://trace.tennessee.edu/cgi/viewcontent.cgi?article=3050&context=utk_gradthes |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
