| Summary: | 碩士 === 淡江大學 === 電機工程學系碩士班 === 96 === In image completion and inpainting technique,the key issue is edge
restoration. In order to resolve the image inpainting problem in the object
edge and to enhance the accuracy of the original image during repairing, we
presents a multi-purpose watermarking technique to repair image
automatically. We use the edge of the original image as the robust watermark
and embed it into the lower frequency band as the reference for repairing
defected area. We also embedde a fragile watermark into image. By
extracting the fragile watermarking, the repair system can detect the defected
area automatically.
Meanwhile, we utilize the extracted robust watermarking, followed by
the texture of object edge, to repair the image block and edge of image. It is
difficult to insert two watermarks and to achieve high Peak Signal to Noise
Ratio, so we use the Discrete Wavelet Transform and Vector Quantization
techniques to minimize the embedded data. According to the experimental
results, the embedded watermark is invisible in the test image. When the test
image was attacked, this technology can detect the large defected area or
complicated defected area and repair it automatically.
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