A New and Efficient Error Concealment Method for Mosaicmages
Date Issued
2008
Date
2008
Author(s)
Liao, Kai-Chieh
Abstract
Most digital cameras use a single CCD/CMOS sensor array to capture color mosaic images, where each pixel has only one measured color. Considering the transmission error and the noise influence during the communication, this thesis presents a new and efficient error concealment method for mosaic images. For removing statistical redundancies in both spectral and spatial domains, we perform a four–level 2–D Mallat packet wavelet transform to decorrelate the mosaic data. Then, based on the partitioned subbands, an efficient data embedding technique is presented to conceal errors. To the best of our knowledge, this is the first time that such an error concealment method is presented for mosaic images. Under some test mosaic images, experimental results demonstrate that both the image quality and the visual effect of our proposed error concealment method are superior to the Inter method and the Mean method.
Subjects
Color filter array
Data embedding
Error concealment
Mallet packet wavelet transform
Mosaic images
PSNR
Vector quantization
Type
thesis
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